Karakteristik Kekuatan Leleh Lentur Baut Besi dengan Beberapa Variasi Diameter Baut
DOI:
https://doi.org/10.5614/jts.2017.24.3.4Keywords:
Baut, kekuatan leleh lentur, sambungan, kayu.Abstract
Abstrak
Baut merupakan salah satu jenis alat sambung mekanis atau pengencang yang banyak digunakan dalamsambungan kayu. Penelitian ini bertujuan untuk menentukan kekuatan leleh lentur (Fyb) dari tiga ukuran diameterbaut besi yang umum digunakan untuk sambungan kayu dan satu ukuran diameter baut baja sebagai pembanding.Spesifikasi baut yang digunakan dilihat dari dimensi dan komposisi penyusunnya. Nilai Fybbaut diperoleh daripengujian momen leleh lentur dengan mengacu pada standar ASTM F1575. Hasil pengujian menunjukkan baut besiyang digunakan berasal dari bahan baja karbon rendah sedangkan baut baja berasal dari bahan baja karbonsedang. Nilai Fybbaut baja lebih tinggi dibandingkan baut besi. Nilai Fybbaut besi diameter 1/2 inci berbeda nyatadengan nilai baut diameter 5/8 dan 3/4 inci. Nilai Fybketiga diamater baut berada di atas nilai Fybbaut yangtercantum dalam SNI 7973:2013 tentang Spesifikasi desain untuk konstruksi kayu.
Abstract
Bolt is one of the mechanical fasteners that are widely used in wood connections. This study aims to determine thebending yield strength (Fyb) of three measures of bolt diameter made from iron which commonly used for theconnection of wood and one measure of bolt diameter made from steel as a comparison. Specifications of bolts usedcan be seen from the dimensions and composition of the constituent. Testing of the bending yield strength wasconducted according to ASTM F1575. The results showed that iron bolts used comes from low carbon steel, whilesteel bolts derived from medium carbon steel materials. Fybvalue of steel bolts was higher than iron bolt. Fybvalueof 1/2 inch diameter iron bolts was significantly different from the value of the bolts 5/8 and 3/4 inch in diameter.The Fybvalue of three bolt diameter were above the Fybvalue listed in SNI 7973:2013 concerning designspecification for wood constructions.
References
Agussalim, 2010, Desain kekuatan sambungan kayu geser ganda berpelat baja dengan baut pada lima jenis kayu Indonesia [tesis], Institut Pertanian Bogor, Bogor.
Albright, D.G., 2006, The Effects of bolt spacing on the performance of single-shear timber connections under reverse-cyclic loading [thesis], Virginia Polytechnic Institute and State University.
American Society for Metal [ASM], 2005, ASM Handbook, Volume 1, Properties and Selection: Irons, Steels, and High Performance Alloys, ASM International, USA.
American Wood Council [AWC], 2014, National Design Specification for Wood Construction 2015 Edition, Leesburg, VA, USA, www.awc.org.
ASTM F1575-03, 2013, Standard Test Method for Determining Bending Yield Moment of Nails, ASTM International, West Conshohocken, PA, 2013, www.astm.org
ASTM F606, 2016, Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets, ASTM International, West Conshohocken, PA, 2013, www.astm.org
ASTM A751-14a, 2014, Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products, ASTM International, West Conshohocken, PA, www.astm.org
ASTM E415-15, 2015, Standard Test Method for Analysis of Carbon and Low-Alloy Steel by Spark Atomic Emission Spectrometry, ASTM International, West Conshohocken, PA, www.astm.org
Badan Standarisasi Nasional [BSN], 2013, SNI 7973:2013 Spesifikasi desain untuk konstruksi kayu, Jakarta.
Breyer, D.E., Fridley, K.J., Cobeen, K.E., and Pollock, D.G., 2007, Design of Wood Structures ASD/LRFD Sixth Edition, McGraw-Hill, New York.
Kulak, G.L., Fisher J.W., and Struik, J.H.A., 2001, Published Guide to Design Criteria for Bolted and Riveted Joints Second Edition. American Institute of Steel Construction, Inc., Chicago, IL, USA.
Ozelton, E.C., 2006, Timber Designer's Manual Third Edition, Blackwell Publishing, Oxford.
Pranata, Y.A., Suryoatmojo, B., dan Tjondro, J.A., 2013, Penelitian eksperimental kuat leleh lentur (Fyb) baut, Jurnal Teknik Sipil, 12(2):98-103.
Rammer, D.R., and Zelinka, S.L., 2014, Withdrawal Strength and Bending Yield Strength of Stainless Steel Nails, Journal of Structural Engineering, 141(5), 04014134.
Sawata, K., and Yasumura, M., 2000, Evaluation of yield strength of bolted timber joints by Monte-Carlo simulation, Proceedings of 6th World Conference on Timber Engineering, Canada.
Tjondro, J.A., 2007, Perilaku sambungan kayu dengan baut tunggal berpelat sisi baja akibat beban uni-aksial tarik [disertasi], Bandung, Universitas Katolik Parahyangan.
Vable, M., 2014, Mechanics of Materials Second Edition, Michigan Technological University.
