Jurnal Teknik Sipil
https://journals.itb.ac.id/index.php/jts
<div style="text-align: justify;"><a href="https://journals.itb.ac.id/index.php/jts" target="_blank" rel="noopener"><strong>Jurnal Teknik Sipil</strong> is a scientific journal published periodically every three months on <strong>April, August</strong> and <strong>December.</strong></a></div> <div> </div> <div style="text-align: justify;">Jurnal Teknik Sipil was published for the first time in 1990 with a mission as a pioneer in the scientific research publication of Civil Engineering in Indonesia.</div> <div> </div> <div style="text-align: justify;">As a national media, Jurnal Teknik Sipil is expected to accommodate the need for a media to disseminate information and latest publication for researchers and practitioners of Civil Engineering in Indonesia. In its development, Jurnal Teknik Sipil has been accredited based on the decision <a href="https://lppm.itb.ac.id/wp-content/uploads/sites/55/2021/12/Surat-pemberitahuan-hasil-akreditasi-elektronik-periode-I-tahun-2017.pdf">letter of Directorate General of Research and Development Strengthening, Ministry of Research, Technology and Higher Education of the Republic of Indonesia, no. : 32a/E/KPT/2017</a>, dated 26 April 2017 as a national scientific journal since 1996 and is currently has been re-accredited on April 2017.</div> <div> </div> <div style="text-align: justify;">With this achievement, Jurnal Teknik Sipil has been established as a media with high quality. Until now the Jurnal Teknik Sipil still an process to maintain its quality scientific publishing only the latest research results in the domain of Civil Engineering.</div> <div> </div> <div><strong><a href="https://get.google.com/albumarchive/107091118610478581121/album/AF1QipN2Jn_OA8Or2Y6sbVxIx4GnuI0V4nRlxqaTq1R0?authKey=CJLBweWC8JnEBA">SK Accreditation</a></strong></div> <div><a href="https://get.google.com/albumarchive/107091118610478581121/album/AF1QipN2Jn_OA8Or2Y6sbVxIx4GnuI0V4nRlxqaTq1R0/AF1QipMpjtWXq4hMFMZ7UdatlHqdRLBEF6BvnBz224o3?authKey=CJLBweWC8JnEBA"><img src="http://167.205.57.68/public/site/images/admin_jts/Sertifikat_JTS001.jpg_btl_.jpg" alt="" /></a><strong>ISSN</strong> 0853-2982 since 29/05/2007</div> <div><strong>E-ISSN</strong> 2549-2659 since 26/10/2016</div> <div> </div> <div><strong><span style="text-decoration: underline;">Publication History</span></strong></div> <div>Last edition journal : <a href="https://ftsl.itb.ac.id/jurnal-teknik-sipil/">https://ftsl.itb.ac.id/jurnal-teknik-sipil/</a></div> <div> </div> <div><strong>Indexing</strong> : <a href="https://scholar.google.co.id/citations?user=7y8sI58AAAAJ&hl=id">Google Scholar</a> | <a href="https://doaj.org/toc/2549-2659?source=%7B%22query%22%3A%7B%22filtered%22%3A%7B%22filter%22%3A%7B%22bool%22%3A%7B%22must%22%3A%5B%7B%22term%22%3A%7B%22index.issn.exact%22%3A%222549-2659%22%7D%7D%2C%7B%22term%22%3A%7B%22_type%22%3A%22article%22%7D%7D%5D%7D%7D%2C%22query%22%3A%7B%22match_all%22%3A%7B%7D%7D%7D%7D%2C%22from%22%3A0%2C%22size%22%3A100%7D">Directory of Open Access Journals (DOAJ)</a> | <a href="https://garuda.kemdikbud.go.id/journal/view/9165">Indonesian Publication Index (IPI)/Portal Garuda</a> | <a href="https://www.doi.org/index.html">Digital Object Identifier (DOI)</a> | <a href="https://search.crossref.org/?q=jurnal+teknik+sipil">Crossref</a> |<a href="https://sinta.kemdikbud.go.id/journals/detail?id=945">Science and Technology Index (SINTA) </a>| Indonesian Scientific Journal Database (ISJD)</div> <div> </div> <div><strong><a href="https://statcounter.com/p11256474/summary/?guest=1">View My Stats</a></strong></div> <div><a href="https://scholar.google.co.id/citations?user=7y8sI58AAAAJ&hl=id"><strong><img src="http://167.205.57.68/public/site/images/admin_jts/google_scholar.jpg" alt="" /></strong></a> <a title="hit counter" href="https://statcounter.com/p11256474/summary/?guest=1" target="_blank" rel="noopener"><img src="http://c.statcounter.com/11256474/0/04439389/0/" alt="hit counter" /></a></div> <div> </div> <div><a href="https://creativecommons.org/licenses/by-nd/4.0/" rel="license"><img src="https://i.creativecommons.org/l/by-nd/4.0/88x31.png" alt="Lisensi Creative Commons" /></a></div> <div>This work is licensed under a <a href="https://creativecommons.org/licenses/by-nd/4.0/">Creative Commons Attribution-NoDerivatives 4.0 International License</a></div> <div> </div>Institut Teknologi Bandungen-USJurnal Teknik Sipil0853-2982Flood Modeling on the Dadap River and Estuary, Banten Province
https://journals.itb.ac.id/index.php/jts/article/view/20762
<p>Abstract</p> <p>Dadap River is located in Kosambi, Tanggerang, which often experiences flooding in the estuary. The problem of flooding is caused by the lack of rivers capacity and estuaries caused by sedimentation and tidal conditions. The flooding caused damage to city infrastructure and paralyzed the activities of the affected residents. The Dadap River was normalized in 2012 to overcome the flooding problems. This study aims to determine the capacity of rivers and estuaries as an alternative solution for flood management. Simulations were carried out in conditions before and after normalization and with alternative embankment elevations. Flood modeling using the HEC-RAS 1D unsteady flow. Boundary conditions in the upstream using flood discharge with a 50 and 100 yr return period and downstream using HHWL elevation and wave height. The analysis results show that the capacity of the Dadap River before normalization was not able to accommodate flood discharge at the 50 and 100 yr return period. After normalization, the water surface elevation may decrease by 24-29%. However, there is still flooding downstream due to the tides, so raising the embankment elevation of +3.5 m.</p> <p>Keywords: Dadap river, estuary, flood, normalization, HEC-RAS</p> <p>Abtsrak</p> <p>Kali Dadap sering mengalami banjir di bagian muara. Kali Dadap terletak di Kecamatan Kosambi, Kabupaten Tanggerang. Permasalahan banjir di Kali Dadap disebabkan oleh berkurangnya kapasitas sungai dan muara yang disebabkan oleh sedimentasi dan pengaruh oleh kondisi pasang pasang surut. Banjir yang terjadi menyebabkan rusaknya prasarana kota serta melumpuhkan aktivitas warga yang terdampak. Kali Dadap telah dilakukan normalisasi pada tahun 2012 untuk mengatasi permalahan banjir yang terjadi. Tujuan dari studi ini yaitu untuk mengetahui kapasitas kali dan muara Dadap serta sebagai alternatif solusi penanganan banjir. Simulasi pemodelan banjir dilakukan pada kondisi sebelum dan sesudah dinormalisasi serta dengan alternatif peninggian tanggul. Pemodelan banjir dilakukan menggunakan aplikasi HEC-RAS 1D aliran unsteady. Pemodelan akan dilakukan dengan kondisi batas di bagian hulu menggunakan debit banjir dengan kala ulang 50 dan 100 tahun dan di bagian hilir menggunakan elevasi HHWL dan tinggi gelombang. Hasil analisis menunjukkan bahwa kapasitas Kali Dadap sebelum di normalisasi tidak mampu mengalirkan debit banjir kala ulang 50 dan 100 tahun. Setelah dilakukan normalisasi pada Kali Dadap, elevasi muka air dapat menurun sekitar 24 -29% tetapi masih terjadi banjir pada bagian hilir akibat pasang surut sehingga perlu adanya peninggian elevasi tanggul yaitu +3.5 m.</p> <p>Kata Kunci: Kali Dadap, muara Dadap, banjir, normalisasi, HEC-RAS</p> <p> </p>Yogi Agus StiawanMohammad Bagus AdityawanAdi Prasetyo
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-043011810.5614/jts.2023.30.1.1River Morphological Study of Downstream Paneki River in Palu Watershed Following The Earthquake and Liquefaction Disaster at Central Sulawesi
https://journals.itb.ac.id/index.php/jts/article/view/20763
<p>Abstract</p> <p>An earthquake that struck Central Sulawesi Province in 2018 triggered liquefaction in several locations such as Jono Oge village where the middle stream of Paneki River flows. Liquefaction caused the Paneki River wash in the densely populated settlement became narrower and shallower due to “flowing” material. In response, the Ministry of Public Works and Housing initiates River Improvement and Sediment Control in Paneki River project. The implementation of this project will affect the river’s behaviour, especially its morphological aspects. Therefore, a study of the discharge capacity and morphological analysis due to said project is needed. The study is conducted using numerical model simulation to obtain the river discharge capacity and river morphological changes in form of bed changes. The model simulation result shows the maximum discharge capacity of Paneki river is 259.81m<sup>3</sup>/s, also the bed upstream and downstream of the river degrade, with consolidation dam - 1 (CD-1) stabilized the river bed upstream of the dam to 2740 m relative to the river outlet. Stabilization due to the position of CD - 2 could be described using the following equation of y = -1018 ln(x) + 7208.1, the average degradation of the downstream area could be described with y= 0.017x<sup>0.6701</sup>.</p> <p>Keywords: River morphology, numerical model, bed degradation.</p> <p>Abstrak.</p> <p>Gempa bumi yang melanda Provinsi Sulawesi Tengah pada tahun 2018 memicu terjadinya likuifaksi di beberapa lokasi seperti Desa Jono Oge tempat Sungai Paneki mengalir. Likuifaksi menyebabkan aliran sungai di desa tersebut menjadi sempit dan dangkal akibat material yang “mengalir”. Kementerian Pekerjaan Umum dan Perumahan Rakyat melakukan pekerjaan Perbaikan Sungai dan Pengendalian Sedimen di Sungai Paneki untuk mengatasi dampak liquifaksi, dimana pelaksanaan pekerjaan ini akan mempengaruhi perilaku sungai, terutama morfologinya. Oleh karena itu, studi tentang kapasitas debit dan analisis morfologi sungai karena proyek tersebut perlu diperlukan. Penelitian ini dilakukan dengan menggunakan model numerik untuk mengetahui perubahan morfologi sungai berupa perubahan dasar dan kapasitas debit sungai. Hasil simulasi menunjukkan kapasitas debit maksimum adalah 259,81m3/s, dasar sungai di hulu dan hilir sungai mengalami penurunan, dengan bendungan konsolidasi - 1 (CD-1) menstabilkan dasar sungai di hulu bendung hingga 2740 m relatif dari outlet sungai. Stabilisasi akibat posisi CD - 2 dapat digambarkan dengan persamaan: y = -1018 ln(x) + 7208.1, degradasi rata-rata daerah hilir dapat digambarkan dengan y= 0.017x<sup>0.6701</sup>.</p> <p>Kata-kata Kunci: Morfologi sungai, model numerik, degradasi dasar sungai.</p>James A KaunangDhemi Harlan Aries S MoerwantoRadia Zulfikar
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430191610.5614/jts.2023.30.1.2Effect of Jetty to the Capacity of Bogowonto River Mouth, Kulon Progo Daerah Istimewa Yogyakarta
https://journals.itb.ac.id/index.php/jts/article/view/20764
<p>Abstract.</p> <p>Bogowonto River is the main river in the Bogowonto watershed which is included in the Serayu Bogowonto River Area. In the dry season, the mouth of the Bogowonto river closes because sediment deposits accumulate at the river mouth, disrupting the river flow to the sea. At high tide, sediment holds the Bogowonto River flow because it impacts the backwater downstream of the Bogowonto river, causing flooding in several locations, especially around Yogyakarta International Airport. The flow capacity of the Bogowonto river is decreasing, causing flooding problems, so this study needs to do an analysis. Backwater analysis at the Bogowonto River estuary simulates the existing jetty in the HEC-RAS program. In contrast, simulated morphology change river was with two jetty scenarios using the DELFT3D program.</p> <p>Keywords: Sediment, flooding, backwater, estuary, jetty.</p> <p>Abstrak.</p> <p>Sungai Bogowonto merupakan sungai utama di DAS Bogowonto yang termasuk dalam Wilayah Sungai Serayu Bogowonto. Pada musim kemarau muara sungai Bogowonto menutup karena endapan sedimen menumpuk di muara sungai sehingga mengganggu aliran sungai ke laut. Pada saat pasang, sedimen menahan aliran Sungai Bogowonto karena berdampak pada bagian hilir sungai Bogowonto sehingga menyebabkan banjir di beberapa lokasi terutama di sekitar Bandara Internasional Yogyakarta. Kapasitas aliran sungai Bogowonto yang semakin berkurang sehingga menimbulkan permasalahan banjir, sehingga penelitian ini perlu dilakukan suatu analisis. Analisis backwater di muara Sungai Bogowonto mensimulasikan jetty eksisting dalam program HEC-RAS. Sebaliknya, simulasi perubahan morfologi sungai dengan dua skenario jetty menggunakan program DELFT3D.</p> <p>Kata-kata Kunci: Sedimen, banjir, backwater, muara, jetty.</p> <p> </p>Muhammad Dandy KusumaMohammad Bagus Adityawan Ana Nurganah Chaidar
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-04301172410.5614/jts.2023.30.1.3The Effect of Dadap Port Structure in Indramayu on Coastal Morphology
https://journals.itb.ac.id/index.php/jts/article/view/20781
<p>Abstract</p> <p>Human activities in coastal area will generally lead to a greater erosion rate due to the loss of natural protection or inappropriate structure. Dadap Beach, located at Juntinyuat District, Indramayu, West Java is one of the locations experiencing problems above. In 2003, a Fishing Port was built on Dadap Beach, with structure jutted 200 m from the shoreline to prevent sedimentation. However, currently there has been a massive sediment deposition in the port pool and behind the port. This study aims to determine the sedimentation pattern in Dadap Port, and the influence of the port structure on the coastal morphology, using a numerical model simulation. The results of this study indicate that the presence of the port structure has caused wave diffraction that forms a circulation flow behind the port structure and around the entrance area to the port pool, that lead to the formation of a tombolo behind the port and the sediment from the longshore currents and local scour enters the port pool area. Furthermore, the existence of Dadap port structure causes the obstruction of longshore currents so that the supply of sediment to the area around the port is reduced and the erosion rate is increasing.</p> <p>Keywords : Erosion, coastal morphology, numerical model.</p> <p>Abstrak</p> <p>Aktivitas manusia di wilayah pesisir umumnya akan menyebabkan bertambahnya laju erosi, yang disebabkan oleh hilangnya perlindungan alami atau pembangunan struktur yang tidak sesuai. Pantai Dadap yang terletak di Kecamatan Juntinyuat, Indramayu, Jawa Barat merupakan salah satu lokasi yang mengalami permasalahan di atas. Pada tahun 2003, dibangun Pelabuhan Perikanan di Pantai Dadap, dengan struktur menjorok 200 m dari garis pantai untuk mencegah sedimentasi. Namun, pada saat ini telah terjadi pengendapan sedimen yang masif di kolam pelabuhan dan di belakang pelabuhan. Studi ini bertujuan untuk mengetahui pola sedimentasi di Pelabuhan Dadap, dan pengaruh struktur pelabuhan terhadap morfologi pantai, dengan menggunakan simulasi model numerik. Hasil studi ini menunjukkan bahwa keberadaan struktur pelabuhan telah menyebabkan difraksi gelombang yang membentuk aliran sirkulasi di belakang struktur pelabuhan dan di sekitar area pintu masuk ke kolam pelabuhan, yang menyebabkan terbentuknya tombolo di belakang pelabuhan dan sedimen dari arus sejajar pantai dan gerusan lokal memasuki area kolam pelabuhan. Selain itu, keberadaan struktur pelabuhan Dadap menyebabkan terhambatnya arus sejajar pantai sehingga suplai sedimen ke daerah sekitar pelabuhan berkurang dan laju erosi semakin meningkat..</p> <p>Kata-kata Kunci : Erosi, morfologi pantai, model numerik.</p> <p> </p>Muhammad Shodiq SupriyantoMuhammad CahyonoEka Oktariyanto NugrohoDede Monarulhuda Sulaiman
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2023.30.1.4Spectral Matching of Three-Component Seismic Ground Accelerations for Critical Structures
https://journals.itb.ac.id/index.php/jts/article/view/19962
<p>Abstract</p> <p>This study introduces a new procedure for three-component spectral matching of seismic ground acceleration records. The procedure involves preserving the phase angle and varying the Fourier amplitudes to match the spectra of the recorded records with a provided target spectrum that represents the spectral values of ground motions in three orthogonal directions. Several three-component recorded records were matched against two target response spectra to test the method. An accurate convergence was achieved in the velocity and displacement records. In addition, the scales among the components’ magnitude were maintained, creating realistic three-component ground motions. Such ground motion inputs are important to qualify critical structures sensitive to three-component motions. Our proposed procedure is novel because the present practices are mostly created based on one-component ground motions.</p> <p>Keywords: Spectral matching, three components, component scales, phase angle, critical structures.</p> <p>Abstrak</p> <p>Studi ini mengusulkan prosedur baru terkait penyesuaian spektra catatan percepatan gempa. Prosedur ini dilakukan dengan mempertahankan sudut phasa tetapi mengubah amplitudo Fourier catatan percepatan gempa demikian hingga spektrumnya sesuai dengan target. Target spektrum yang diinputkan mewakili tiga komponen gempa. Untuk mengujinya, beberapa catatan gempa tiga-komponen disesuaikan spektrumnya terhadap dua target spektra. Ketelitian yang cukup baik terlihat dari catatan kecepatan dan simpangan. Skala ketiga komponen juga dijaga sehingga dihasilkan percepatan gempa tiga-komponen yang realistis. Percepatan gempa sejenis ini diperlukan dalam proses kualifikasi struktur penting yang sensitif terhadap pengaruh gerakan tiga arah. Prosedur tersebut adalah baru karena teknik yang ada sekarang didasarkan pada penyesuain spektrum per-komponen.</p> <p>Kata-kata Kunci: Penyesuaian spektra, tiga komponen, skala komponen, sudut phasa, struktur penting.</p> <p> </p>Sindur P. MangkoesoebrotoAdi YasaEdiansjah Zulkifli
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-04301334410.5614/jts.2023.30.1.5Studi Karakteristik Aliran Tanah Terlikuefaksi Berdasarkan Uji Viskositas
https://journals.itb.ac.id/index.php/jts/article/view/19250
<div class="page" title="Page 1"> <div class="layoutArea"> <div class="column"> <p>Abstrak</p> <p>Gempa bumi di Kota Palu sebesar 7,5 Mw pada tahun 2018 menyebabkan likuefaksi di Desa Lolu dengan pergerakan lateral tanah hingga 150 meter. Pergerakan ini terjadi akibat perilaku mencairnya tanah atau disebut likuefaksi. Beberapa peneliti telah membuktikan bahwa perilaku tanah terlikuefaksi dapat dianalisis dengan cara mensimulasikan tanah sebagai cairan yang memiliki kekentalan (viscous fluid). Perilaku pergerakan tanah pada saat likuefaksi terjadi dapat dipelajari melalui karakteristik aliran tanah. Karakteristik aliran tanah terlikuefaksi dianalisis dari nilai viskositas terhadap gaya yang diberikan. Dilakukan pengujian di laboratorium menggunakan alat rotational rheometer untuk mendapatkan nilai viskositas. Terdapat 6 (enam) sampel tanah uji yang digunakan pada penelitian ini, yaitu 3 (tiga) sampel dari area aliran dan 3 (tiga) sampel dari area terdampak. Tanah dari area aliran terdiri dari silty sand, coarse sand, dan fine sand. Sementara tanah dari area terdampak terdiri dari sand gravel, sand gravel boulder, dan silty sand. Seluruh sampel tanah uji menunjukkan karakteristik aliran tanah terlikuefaksi Non-Newtonian, yaitu shear thinning. Variasi kadar air dan suhu yang diterapkan pada seluruh sampel tanah uji menunjukkan bahwa semakin tinggi nilai kadar air dan suhu, maka semakin rendah nilai viskositas yang dihasilkan. Berdasarkan komposisi tanah, semakin besar persentase butir halus yang terkandung maka semakin besar nilai viskositas atau dapat dikatakan tanah mengalir dengan lebih lambat.</p> <p>Kata-kata Kunci: Likuefaksi, rotational rheometer , laju geser viskositas, kadar air suhu.</p> <p>Abstract</p> <p>An earthquake in Palu City of 7.5 Mw in 2018 caused liquefaction in Lolu Village with lateral ground movement up to 150 meters. This movement occurs due to the behavior of melting soil, called liquefaction. Several researchers have proven that the behavior of liquefied soil can be analyzed by simulating the soil as a viscous fluid. The behavior of soil movement when liquefaction occurs can be studied through the characteristics of soil flow. The characteristics of liquefied soil flow were analyzed, from the value of the viscosity due to the applied force. Laboratory tests were carried out using a rotational rheometer to obtain the viscosity value. There were 6 (six) soil samples used in this study, namely 3 (three) samples from the flow area and 3 (three) samples from the affected area. The soil of the flow area consists of silty sand, coarse sand, and fine sand. The soil from the affected area consists of sand gravel, sand gravel boulders, and silty sand. All of the tested soil samples showed non-Newtonian soil flow characteristics, namely shear thinning. Variations in water content and temperature applied to all tested soil samples indicate that the higher the water content and temperature values, the lower the resulting viscosity value. Based on the composition of the soil, the greater the percentage of fine grains contained, the greater the value of viscosity, or it can be said that the soil flows more slowly.</p> <p>Keywords: Liquefaction, rotational rheometer, viscosity shear rate, temperature water content</p> <p> </p> </div> </div> </div>Wiwik RahayuWidjojo Adi PrakosoAnisya PurwandariDian Sih PusporiniNatasha Gilbert
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2023.30.1.6Pengaruh Penggunaan Material Slag Sebagai Bahan Subtitusi Semen terhadap Sifat Fisis, Kuat Tekan dan Karakterisasi Mortar
https://journals.itb.ac.id/index.php/jts/article/view/18423
<p>Abstrak</p> <p>Telah dilakukan penelitian mengenai pengaruh variasi ukuran butir dan subtitusi material slag sebagai bahan subtitusi semen terhadap sifat fisik dan nilai kuat tekan mortar. Penelitian ini bertujuan untuk mengetahui pengaruh subtitusi slag terhadap sifat fisik dan kekuatan mortar yang ditambahkan pada campuran mortar serta dengan membandingan mortar tanpa subtitusi slag. Komposisi variasi subtitusi slag yang ditambahkan yaitu berturut-turut 10%, 20%, 30%, 40% dan 50% dari berat semen dan variasi ukuran butir slag yaitu 100, 200 dan 350 mesh. . Kemudian mortar dilakukan perendaman selama 21 hari. Hasil pengujian menunjukkan bahwa nilai kuat tekan mortar pada masing-masing ukuran butir benda uji dengan subtitusi slag lebih tinggi dibandingkan nilai kuat tekan mortar tanpa subtitusi slag. Kuat tekan tertinggi pada subtitusi slag ukuran butir 100 mesh, 200 mesh dan 350 mesh berturut-turut yaitu sebesar 5,55 Mpa, 5,65 Mpa dan 9,66 Mpa. Sedangkan nilai kuat tekan mortar tanpa subtitusi slag yaitu sebesar 4,81 Mpa. Kadar optimum subtitusi slag yaitu sebesar 10% dari berat semen. Hasil ini menunjukkan semakin kecil ukuran butir akan menurunkan porositas yang terbentuk pada mortar, sehingga massa jenis mortar akan semakin tinggi. Semakin tinggi massa jenis mortar, maka absorpsi yang dihasilkan akan semakin kecil. Hasil penelitian yang diperoleh dapat dikatakan bahwa slag dapat digunakan sebagai bahan subtitusi semen karena slag merupakan bahan yang bersifat pozzolan berdasarkan ASTM-C 168.</p> <p>Kata-kata Kunci: Slag, subtitusi, semen, kuat tekan dan uji fisis.</p> <p>Abstract</p> <p>Research has been carried out on the effect of variations in grain size and substitution of slag as a cement substitute on the physical properties and compressive strength of mortar. This study aims to determine the effect slag on the physical properties and strength of the mortar added to the mortar mixture and by comparing the mortar without slag.substitution variation slag is 10%, 20%, 30%, 40% and 50% of the cement weight, respectively and variations in slag grain size are 100, 200 and 350 mesh . Then the mortar was soaked for 21 days. The test results show that the compressive strength of mortar in each grain size of the specimen with slag is higher than the compressive strength of mortar without slag. The highest compressive strength in slag grain sizes of 100 mesh, 200 mesh and 350 mesh, respectively, is 5.55 Mpa, 5.65 Mpa and 9.66 Mpa. Meanwhile, the compressive strength of mortar without slag is 4.81 MPa. The optimum level of slag is 10% of the cement weight. These results indicate that</p> <p>the smaller the grain size will reduce the porosity formed in the mortar, so that the density of the mortar will be higher. The higher the density of the mortar, the smaller the absorption will be. The results obtained can be said that slag can be used as a cement substitute because slag is a pozzolanic material based on ASTM-C 168.</p> <p>Keywords: Slag, subtitution, cement, compressive strenght and pyhsical test.</p> <p> </p> <p> </p>AnwarMuhammad AminSudibyoDavid Candra BirawidaYusup Hendronursito Evi Dwi YantiKusno Isnugroho
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2023.30.1.7Penentuan Faktor Koreksi Panjang Loncatan Hidrolik pada Kolam Peredam Energi Tipe Bucket
https://journals.itb.ac.id/index.php/jts/article/view/18759
<p>Abstrak</p> <p>Pada kolam olak tipe bucket, jari-jari (R) mempengaruhi loncatan hidrolik. Faktor koreksi panjang loncatan yang dipengaruhi oleh jari-jari kolam bucket. Nilai tersebut dapat digunakan menentukan panjang atau luas area pengamanan hilir sungai agar tidak terjadi tergerusan. Uji model fisik dilakukan dengan flum, panjangnya 4,1 m, lebar flume 0,15 m dan tinggi flume 0,24 m. Maka 3 variasi jari-jari kolam olak yaitu R1 = 6 cm, R2 = 7 cm dan R3 = 8 cm kemudian dialirkan air dengan 27 variasi percobaan. Diukur tinggi muka air diatas mercu bendung (Hd), saat meloncat (y1), setelah meloncat (y2) dan panjang loncatan hidrolik (Lj), didapatkan tinggi air saat meloncat (y1) dan bilangan Froude (Fr). Dengan memodifikasi persamaan Silvester (σ = 3,0 dan Ƞ = 1,17). panjang loncatan hidrolik mendekati hasil observasi dengan tingkat kesalahan relatif ΔE = 25,8%, NSE = 0,9, MAE = 6,0 dan RMSE = 3,1.</p> <p>Kata-kata Kunci: Kolam olak, tipe bucket, loncatan hidrolik, bilangan froude.</p> <p>Abstract</p> <p>In a bucket type still pond, radius (R) affects the hydraulic jump. The jump length correction factor is affected by the bucket pool radius. This value can be used to determine the length or area of the river downstream safeguard area so that erosion does not occur. The physical model test was carried out with a flume, the length of which was 4.1 m, the flume width was 0.15 m and the flume height was 0.24 m. Then 3 variations of the radius of the stilling pond, namely R1 = 6 cm, R2 = 7 cm and R3 = 8 cm then water was flowed with 27 experimental variations. Measured the water level above the crest of the weir (Hd), when jumping (y1), after jumping (y2) and the length of the hydraulic jump (Lj), obtained the water height when jumping (y1) and the Froude number (Fr). By modifying Silvester's equation (σ = 3.0 and Ƞ = 1.17). hydraulic jump length is close to the observed results with relative error rates ΔE = 25.8%, NSE = 0.9, MAE = 6.0 and RMSE = 3.1.</p> <p>Keywords: Stilling pond, bucket type, hydraulic jump, froude number.</p> <p>Abstract</p> <p>In a bucket type still pond, radius (R) affects the hydraulic jump. The jump length correction factor is affected by the bucket pool radius. This value can be used to determine the length or area of the river downstream safeguard area so that erosion does not occur. The physical model test was carried out with a flume, the length of which was 4.1 m, the flume width was 0.15 m and the flume height was 0.24 m. Then 3 variations of the radius of the stilling pond, namely R1 = 6 cm, R2 = 7 cm and R3 = 8 cm then water was flowed with 27 experimental variations. Measured the water level above the crest of the weir (Hd), when jumping (y1), after jumping (y2) and the length of the hydraulic jump (Lj), obtained the water height when jumping (y1) and the Froude number (Fr). By modifying Silvester's equation (σ = 3.0 and Ƞ = 1.17). hydraulic jump length is close to the observed results with relative error rates ΔE = 25.8%, NSE = 0.9, MAE = 6.0 and RMSE = 3.1.</p> <p>Keywords: Stilling pond, bucket type, hydraulic jump, froude number.</p> <p> </p> <p> </p>Nanang Saiful RizalAditya Surya ManggalaMokh Hairul Bahri Nely Ana Mufarida Hardian Oktavianto Habibatul Azizah Al FaruqDewi LusianaAgung Nilogiri Aji Brahma NugrohoSofia Ariyani
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2023.30.1.8Pengaruh Penambahan Nano Material Terhadap Volumetrik Campuran Beraspal Panas Lapis AUS (AC-WC)
https://journals.itb.ac.id/index.php/jts/article/view/20623
<p><strong>Abstrak</strong></p> <p>Nano teknologi merupakan suatu teknologi rekayasa pada material kedalam ukuran atom atau molekul. Salah satu sifat unik dari nano material yaitu memiliki fraksi permukaan yang cukup besar dan kinerja permukaan yang cukup tinggi. Penelitian ini bertujuan untuk mengetahui pengaruh dari penambahan nano material pada campuran aspal panas lapis aus (AC-WC). Material nano yang digunakan pada penelitian ini adalah material silika yang berasal dari pasir kuarsa Bangka Belitung yang kemudian diproses menjadi nano silika oleh Balai Besar Keramik Bandung. Aspal yang digunakan pada campuran adalah aspal pen 60/70 produksi Pertamina. Penggunaan material nano silika sebagai subtitusi <em>filler</em> dapat mengurangi penggunaan kadar aspal yang mana dapat dilihat dari nilai kadar aspal optimum yang dihasilkan pada campuran dengan variasi 1%, 2%, 3% nano silika jika dibandingkan campuran beraspal konvensional. Selain itu, penggunaan alat pemadat yang berbeda memberikan pengaruh terhadap kepadatan yang dihasilkan pada campuran dengan penambahan nano silika. Hal tersebut terlihat bahwa kepadatan yang dihasilkan oleh alat pemadat <em>superpave gyratory compactor</em> (SGC) menghasilkan kepadatan yang lebih kecil dibandingkan dengan alat pemadat marshall.</p> <p>Kata – kata Kunci: <em>Campuran Aspal, Filler, Kadar Aspal, Nanosilika</em></p> <p><strong>Abstract</strong></p> <p><em>Nanotechnology is an engineering technology on materials into atomic or molecular sizes. One of the unique properties of nanomaterials is that have a large surface fraction and high surface performance. This study aims to determine the effect of the addition of nanomaterials on hot mix asphalt (AC-WC). The nano material used is silica from Bangka Belitung quartz sand which is processed into nano silica by Balai Besar Keramik Bandung. The asphalt used in the mixture is asphalt pen 60/70 produced by Pertamina. Nano silica is used as a filler substitution so that is can reduce the asphalt content which could be seen from the optimum asphalt content value with mixed variations of 1%, 2%, 3% nano silica when compared to conventional asphalt mixtures. In addition, using different compactor has an effect on nano silika mixture asphalt density. It can be seen that density value from superpave gyratori compactor (SGC) is lower than marshall compactor.</em></p> <p>Keyword: <em>Asphalt Mixture, Asphalt Content, Filler, Nanosilica</em></p> <p> </p>Nurhafni KarinaBambang Sugeng SubagioEri Susanto Hariyadi Rani Gayatri
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2022.30.1.9Analisa Relative Important Index pada Leading dan Lagging Indicators yang Mempengaruhi Budaya Keselamatan Konstruksi di Indonesia
https://journals.itb.ac.id/index.php/jts/article/view/20619
<p><strong>Abstrak</strong></p> <p><em>Konstruksi merupakan salah satu sektor yang secara signifikan mendukung Produk Domestik Bruto (PDB) di Indonesia. Aktivitas konstruksi di Indonesia meningkat seiring dengan besarnya </em><em>volume </em><em>pembangunan infrastruktur. Tingginya aktivitas konstruksi </em><em>otomatis </em><em>berdampak pada kebutuhan </em><em>kinerja </em><em> proyek, tidak terkecuali</em><em> terkait kinerja </em><em>keselamatan konstruksi</em><em>nya</em><em>. Faktor utama pembentuk </em><em>kinerja</em><em> keselamatan konstruksi adalah budaya keselamatan. Indonesia saat ini </em><em>belum</em><em> mencapai budaya keselamatan </em><em>pada tingkat yang tertinggi.</em><em> Untuk mencapai budaya keselamatan dengan tingkatan tertinggi, penyelenggara konstruksi di Indonesia perlu memenuhi beberapa langkah yang diukur melalui leading indicator (langkah proaktif dan preventif) dan lagging</em> <em>indicator (langkah reaktif dan korektif). </em><em>A</em><em>rtikel ini memiliki tiga tujuan mendasar sebagai berikut: 1) mengidentifikasi seluruh indikator keselamatan konstruksi melalui pendekatan leading indicators dan lagging indicators; 2) menganalisis tingkat urgensi setiap indikator; </em><em>dan </em><em>3) menganalisis hubungan indikator dengan peningkatan budaya keselamatan konstruksi Indonesia.</em> <em>Studi literatur</em><em>, D</em><em>esk </em><em>R</em><em>esearch </em><em>dan Relative Importance Index (RII) </em><em>menjadi </em><em>salah satu </em><em>metode dalam menemukan indikator </em><em>yang dibutuhkan dan menganalisis tingkat urgensinya</em><em>. Terdapat total 9 leading indicator dan 2 lagging indicator yang merupakan ukuran dalam meningkatkan budaya keselamatan konstruksi di Indonesia. </em><em>Jumlah kecelakaan kerja merupakan indikator terpenting dalam menggambarkan kinerja keselamatan. Sementara itu, rutinitas toolbox talks di proyek konstruksi merupakan indikator dengan tingkat urgensi terendah apabila budaya pelaksanaannya masih bersifat normatif. </em><em>Seluruh indikator digunakan untuk menggambarkan keberhasilan pemenuhan langkah-langkah peningkatan budaya keselamatan yang meliputi: 1) penerapan reward dan punishment; 2) membentuk lembaga khusus untuk pengawasan K3; 3) melakukan evaluasi kinerja K3 secara rutin; dan 4) penerapan manajemen risiko. </em></p> <p><strong>Kata-kata Kunci: </strong><em>leading indicator, lagging indicator, budaya keselamatan, konstruksi.</em></p> <p><strong>Abstract</strong></p> <p><em>Construction is one of the sectors that significantly supports the Gross Domestic Product (GDP) in Indonesia. Construction activity in Indonesia is increasing in line with the large volume of infrastructure development. The high activity of automated construction has an impact on the kinerjance needs of the project, including the construction safety kinerjance. The main factor shaping construction safety kinerjance is safety culture. Indonesia has not yet reached the highest level of safety culture. To achieve the highest level of safety culture, construction operators in Indonesia need to fulfill several steps measured through leading indicators (proactive and preventive measures) and lagging indicators (reactive and corrective steps). This article has three basic objectives as follows: 1) to identify all construction safety indicators through leading indicators and lagging indicators approach; 2) analyze the level of urgency of each indicator; and 3) analyze the relationship of the indicators with the improvement of Indonesia's construction safety culture. Literature studies, Desk Research and the Relative Importance Index (RII) become one of the methods in finding the required indicators and analyzing the level of urgency. There are a total of 9 leading indicators and 2 lagging indicators which are measures to improve construction safety culture in Indonesia. The number of work accidents is the most important indicator in describing safety kinerjance. Meanwhile, routine toolbox talks in construction projects is an indicator with the lowest level of urgency if the implementation culture is still normative. All indicators are used to describe the successful fulfillment of safety culture improvement measures which include: 1) application of rewards and punishments; 2) establish a special institution for the supervision of OHS; 3) conduct regular OHS kinerjance evaluations; and 4) implementation of risk management.</em></p> <p><strong>Keywords: </strong><em>leading indicator, lagging indicator</em><em>, safety culture, construction.</em></p> <p> </p>desiderius indrayanaKhrisna Suryanto Pribadi Puti Farida MarzukiHardianto Iridiastadi
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2022.30.1.10Analisis Tingkat Ketelitian Penggunaan Foto Udara Format Kecil (FUFK) untuk Estimasi Perhitungan Volume Galian dan Timbunan
https://journals.itb.ac.id/index.php/jts/article/view/18022
<p>Abstrak</p> <p>Pembangunan infrastruktur dapat diwali dengan pemilihan lahan yang tersedia, pemilihan meliputi berbagai pertimbangan seperti lokasi, akses, harga, hingga kontur lahan. Kontur lahan berpengaruh terhadap banyaknya biaya penyiapan lahan yang berkaitan dengan galian dan timbunan. Kontur lahan dapat diketahui dengan melakukan pengukuran terestris menggunakan theodolite, total station, atau RTK/GNSS. Namun, Biaya dan waktu yang diperlukan untuk pengukuran terestris tidak efesien untuk digunakan saat studi awal pemilihan lahan. Teknologi Foto Udara Format Kecil (FUFK) menjadi salah satu yang sedang dikembangkan karena lebih efisien dari sisi waktu dan biaya. FUFK diolah menjadi sebuah data DEM melalui metode stereo-plotting sehingga didapat gambaran ukuran dan kontur lahan. Namun, hasil dari ekstraksi FUFK memiliki keterbatasan ketelitian sehingga perlu dianalisa lebih lanjut ketelitiannya. Studi ini dilakukan untuk menganalisa ketelitian hasil ekstraksi FUFK secara geometrik dan menghitung kesalahan peta kontur yang dihasilkan jika dibandingkan dengan pengukuran terestris untuk pekerjaan galian dan timbunan. Studi dilakukan pada 2 lokasi dengan 9 kali percobaan tinggi terbang dan overlap yang berbeda-beda. Hasil dari studi ini secara keseluruhan ketelitian peta yang dihasilkan memiliki nilai ketelitian geometrik horizontal CE90 0,400 hingga CE90 0,158 dan nilai ketelitian vertikal LE90 0,648 hingga LE90 0,223 dan perhitungan galian dan timbunan memiliki kesalahan absolut 3.39% hingga 14.21%.</p> <p>Kata-kata Kunci: <em>Foto udara format kecil (FUFK), galian, kontur, timbunan.</em></p> <p>Abstract</p> <p>Infrastructure development can be initiated by the selection of available land, the selection includes various considerations such as location, access, price, to land contours. The contours of the land affect the many costs of land preparation related to cut and fill work. The contours can be known by taking theestris measurements using theodolite, total station, or RTK/GNSS. However, the cost and time required for the measurement of terestris are not efficient to use during land selection. Small Format Aerial Photography (SFAP) technology is one that is being developed because it is more efficient. SFAP is processed into a DEM data through stereo-plotting methods so that an overview of the size and contours of the land is obtained. However, the results of SAPF extraction have limitations in accuracy. This study was conducted to analyze the accuracy of SAPF extraction results. The study was conducted in 2 locations with 9 experiments with different flying heights and overlaps. The results of this study as a whole had a horizontal geometric accuracy value of CE90 0.400 to CE90 0.158 and a vertical accuracy value of LE90 0.648 to LE90 0.223 and calculations of cut and fill volumes had absolute errors of 3.39% to 14.21%.</p> <p><strong>Keywords</strong><strong>:</strong> Contours, cut, fill, small format aerial photography (SFAP).</p> <p> </p>Amsor ChairuddinHaryono Putro
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2023.30.1.11Analisis Potensi Penerapan Prinsip Produksi berdasarkan Konsep Six Sigma pada Salah Satu Perusahaan Beton Precast di Indonesia
https://journals.itb.ac.id/index.php/jts/article/view/18112
<p>Abstrak</p> <p>Beton precast yang digunakan pada proyek konstruksi rawan dari permasalahan cacat produk seperti crack, chipping, honeycombing, ataupun bleeding. Oleh karena itu, diperlukan manajemen kualitas dengan standar kualitas dan metode yang tepat, salah satunya adalah Six Sigma. Penelitian ini bertujuan untuk mengetahui tingkat penerapan prinsip manajemen kualitas, tingkat kualitas proses produksi, dan menentukan potensi penerapan prinsip produksi berdasarkan konsep Six Sigma. Penelitian mengambil studi kasus pada satu perusahaan beton precast di Indonesia, dilakukan dengan menelaah tingkat penerapan prinsip manajemen kualitas dan melakukan pengukuran kualitas proses produksi. Dalam penelitian dilakukan identifikasi standar beton precast dari berbagai negara untuk dipilih dan digunakan pada kuesioner pengukuran kualitas proses produksi. Selanjutnya, studi menunjukkan bahwa prinsip manajemen kualitas belum sepenuhnya diterapkan di perusahaan terkait karena ada kekurangan pada beberapa indikator penting. Berdasarkan pengukuran kualitas proses produksi, perusahaan memiliki frekuensi permasalahan kualitas produk dengan kategori “Sangat Rendah” dengan proses produksi perusahaan “Baik” dan adanya penerapan standar beton precast dengan kategori “Sangat Mudah”. Selain itu perusahaan juga dinilai sebagai “Potensi Tinggi” dalam penerapan konsep Six Sigma yang didukung dari kondisi kesiapan dan kondisi eksisting perusahaan. Namun, dalam hal ini perusahaan perlu memperdalam penggunaan alat bantu manajemen kualitas terutama alat bantu statistik.</p> <p>Kata-kata Kunci: Six sigma, manajemen kualitas, beton precast.</p> <p>Abstract</p> <p>Precast concrete used in construction projects is prone to product defects such as cracking, chipping, honeycombing, or bleeding. Therefore, quality management is needed based on the appropriate standards of quality and methods, one of which is Six Sigma. This study aims to determine the level of application of quality management principles, the level of quality of the production process, and determine the potential application of production principles based on the Six Sigma concept. The study took a case study on a precast concrete company in Indonesia, carried out by examining the level of application of quality management principles and measuring the quality of the production process. In this study, the identification of precast concrete standards from various countries to be selected and used in the questionnaire for measuring the quality of the production process was carried out. Further, the study shows that the principles of quality management have not been fully implemented at the company because there are deficiencies in several important indicators. Based on the measurement of the quality of the production process, the company has a frequency of product quality problems with the "Very Low" category with the company's production process "Good" and the application of precast concrete standards with the "Very Easy" category. In addition, the company has graded as "High Potential" in the application of the Six Sigma concept which is supported by the readiness and existing conditions of the company. However, in this case the company needs to deepen the use of quality management tools, especially statistical tools.</p> <p>Keywords: Six sigma, quality management, precast concrete.</p> <p> </p>Yulia WidyaningsihPuti Farida Marzuki
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2023.30.1.12Desain Layout dan Pekerjaan Pengerukan Alur Pelayaran dan Kolam Putar Terminal Kalibaru
https://journals.itb.ac.id/index.php/jts/article/view/18831
<p>Abstrak</p> <p>Terminal Kalibaru merupakan salah satu terminal di Pelabuhan Tanjung Priok yang melayani aktivitas dan perdagangan Indonesia, terutama untuk jenis petikemas. Terminal Kalibaru diharapkan dapat memfasilitasi masuknya kapal peti kemas generasi terbaru. Agar dapat memenuhi harapan tersebut, dibutuhkan fasilitas pelabuhan seperti alur pelayaran dan kolam putar yang memadai. Alur pelayaran merupakan bagian dari pelabuhan yang berfungsi sebagai jalur masuk dan keluar kapal. Kolam putar merupakan bagian dari pelabuhan yang berfungsi untuk maneuver kapal sebelum dan sesudah kapal melakukan kegiatan bersandar di dermaga. Konfigurasi yang perlu diperhatikan dalam mendesain alur pelayaran adalah kedalaman, lebar, belokan, dan kemiringan samping alur. Sedangkan konfigurasi yang perlu diperhatikan dalam mendesain kolam putar adalah kedalaman dan diameter. Berdasarkan kapal rencana di Terminal Kalibaru, alur pelayaran dan kolam putar didesain dengan kedalaman -16,5 meter LWS. Untuk mencapai kedalaman tersebut, diperlukan pekerjaan pengerukan. Makalah ini meliputi penentuan layout alur pelayaran dan kolam putar, perhitungan volume pengerukan, jenis dan jumlah kapal keruk yang digunakan, estimasi penjadwalan pekerjaan, dan estimasi biaya pekerjaan pengerukan. Volume pekerjaan pengerukan untuk alur pelayaran dan kolam putar di Terminal Kalibaru sebesar 9.131.414 m<sup>3</sup> dan akan dikeruk menggunakan 2 TSHD Aru II dan 1 CSD Tona 2. Estimasi biaya yang dibutuhkan adalah Rp147.945 per meter kubik.</p> <p>Kata-kata Kunci: Alur pelayaran, kolam putar, pengerukan.</p> <p>Abstract</p> <p>Kalibaru Terminal is one of the terminal at the Tanjung Priok Port that serves Indonesian activities and trade, especially for container types. The Kalibaru Terminal is expected to facilitate the entry of the latest generation of container ships. In order to meet these expectations, adequate port facilities such as approach channel and turning basin are needed. The approach channel is part of the port that functions as a ship's entry and exit route. Turning basin is part of the port that serves to maneuver the ship before and after the ship anchored at the dock. Configurations that need to be considered in designing approach channel are depth, width, turns, and side slope of the channel. While the configuration that needs to be considered in designing turning basin is the depth and diameter. Based on the planned ship at Kalibaru Terminal, the approach channel and turning basin are designed with a depth of -16,5 meter LWS. To reach this depth, dredging work is required. This paper includes determining the layout of approach channel and turning basin, calculating the volume of dredging, the type and number of dredgers used, estimating work scheduling, and estimating the cost of dredging work. The volume of dredging work for approach channel and turning basin at the Kalibaru Terminal is 9.131.414 m<sup>3 </sup>and will be dredged using 2 TSHD Aru II and 1 CSD Tona 2. The estimated cost required is Rp147.945 per cubic meter.</p> <p>Keywords: Approach channel, dredging, turning basin.</p> <p> </p>Almaidah Junsasmi TambunanEddy Rachman Gandanegara
Copyright (c) 2023 Jurnal Teknik Sipil
2023-05-042023-05-0430110.5614/jts.2023.30.1.13Studi Analisis Stabilitas Tubuh Bendungan pada Bendungan pada Bendungan Banyu Urip dengan menggunakan software Geostudio 2018 di Kabupaten Bojonegoro Jawa Timur
https://journals.itb.ac.id/index.php/jts/article/view/18700
<p>Abstrak</p> <p>Tubuh bendungan merupakan bagian paling penting yang berfungsi sebagai penyangga aliran air dan rembesan. Bendungan urugan tipe zonal harus dianalisis berdasarkan desain zona-zona penyusun tubuh bendungan. Karena besarnya rembesan dan nilai keamanan strabilitas bendungan dipengaruhi oleh besar ketebalan zona-zona tubuh bendungan. Pada penelitian ini bertujuan menganalisa stabilitas tubuh bendungan Banyu terhadap kelongsoran lereng dan rembesan air. . Analisis stabilitas tubuh bendungan menggunakan metode Simplified Bishop dimana akan dibandingkan antara perhitungan manual dengan menggunakan Software Geostudio. Hasil analisis Geoslope menunjukan bahwa bagian hulu bendungan menghasilkan nilai FS 3,021 > 1,50 dan adanya pengaruh gempa menghasilkan FS 1,633 > 1,20. Untuk nilai FS pada rapid draw down hulu bendungan menghasilkan nilai FS 3,234 > 1,30 dan adanya pengaruh gempa menghasilkan FS 1,718 > 1,10. Dengan demikian bendungan dinyatakan aman kestabilannya pada kondisi setelah selesai konstruksi (tanpa genangan air), muka air normal, muka air banjir, rapid draw down dan adanya pengaruh gempa pada Y/H: 0,25; 0,50; 0,75; 1,00.</p> <p>Kata-kata Kunci: Gempa, tanah lempung, analisis stabilitas slope/W, metode bishop, goestudio</p> <p>Abstract</p> <p>The body of the dam is the most important part that serves as a buffer for water flow and seepage. Zonal type urugan dams should be analyzed based on the design of the constituent zones of the dam body. Due to the magnitude of seepage and the safety value of the dam's strability, it is influenced by the thickness of the dam body zones. This study aims to analyze the stability of the Banyu dam body against slope landslides and water seepage. . Analysis of the stability of the dam body using the Simplified Bishop method which will be compared between manual calculations using Geostudio Software. The results of Geoslope analysis showed that the upstream part of the dam produced FS values of 3.021 > 1.50 and the influence of the earthquake produced FS 1.633 > 1.20. For the FS value in the rapid draw down upstream of the dam produced an FS value of 3.234 > 1.30 and the influence of the earthquake resulted in FS 1.718 > 1.10. Thus the dam is declared safe stability in conditions after completion of construction (without waterlogging), normal water level, flood water level, rapid draw down and the influence of earthquakes on Y/H: 0.25; 0,50; 0,75; 1,00.</p> <p> Keywords: Earthquake, clay, slope/W stability analysis, bishop method, goestudio.</p>silviya ekasariAbdul Halim Riman Riman
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2023-05-042023-05-0430110.5614/jts.2023.30.1.14Etika Penelitian: Kajian Rektraksi Artikel Ilmiah Teknik Sipil
https://journals.itb.ac.id/index.php/jts/article/view/18408
<p>Abstrak</p> <p>Salah satu konsekuensi dari temuan penyimpangan etika penelitian adalah retraksi artikel ilmiah. Retraksi artikel merupakan upaya menjaga kualitas publikasi sehingga studi terkait retraksi artikel menjadi penting untuk diteliti. Studi ini berusaha menginvestigasi alasan dan tren retraksi artikel ilmiah bidang teknik sipil yang belum pernah dilakukan sebelumnya. Kajian pustaka terfokus terhadap 746 artikel yang diekstraksi dari laman ASCE Library pada 11 April 2022 menunjukkan bahwa hanya sebesar 6,17% dari artikel tersebut yang diretraksi oleh penerbit. Dari jumlah tersebut, 10,87% merupakan retraksi artikel akibat kelalaian pihak penerbit dan 82,61% retraksi murni kelalaian penulis dalam bentuk berbagai penyimpangan penelitian (research misconducts). Hasil analisis juga menunjukkan turunnya tren jumlah retraksi artikel ilmiah teknik sipil sejak 2011, sedangkan dua alasan utama retraksi artikel adalah kurangnya tanggapan dari penulis (lack of author response) sebesar 23,91% dan temuan tumpang tindih yang signifikan dengan publikasi lainnya (significant overlap) sebesar 19,57%. Studi ini berkontribusi pada peningkatan wawasan terkait retraksi artikel ilmiah di bidang teknik sipil sehingga diharapkan dapat meningkatkan kesadaran para peneliti teknik sipil terhadap pentingnya pemenuhan etika penelitian.</p> <p>Kata-kata Kunci: ASCE, etika penelitian, kajian pustaka terfokus, penyimpangan penelitian, retraksi artikel ilmiah, teknik sipil.</p> <p>Abstract</p> <p>One consequence of the findings of research ethics misconducts is the retraction of scientific articles. Article retraction is an effort to maintain the quality of publications so that studies related to article retraction are important to be researched. This study attempts to investigate the reasons and trends in the retraction of scientific articles in the field of civil engineering which has never been done previously. A focused literature review of 746 articles extracted from the ASCE Library on April 11, 2022 showed that only 6.17% of those articles were retracted by publishers. Of that amount, 10.87% were article retractions due to negligence on the part of the publisher and 82.61% were retractions due to the author's negligence in the form of various research misconducts. The results of the analysis also show a decreasing trend in the number of retractions of civil engineering articles since 2011, while the two main reasons for article retractions are the lack of author response by 23.91% and findings of significant overlap with other publications by 19.57%. This study contributes to increasing insight related to the retraction of scientific articles in the field of civil engineering so that it is expected to increase the awareness of civil engineering researchers on the importance of fulfilling research ethics.</p> <p>Keywords: ASCE, civil engineering, focused literature review, research ethics, research misconducts, retraction of scientific articles.</p>Seng Hansen
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2023-05-042023-05-0430110.5614/jts.2023.30.1.15