Studi Eksperimental Batang Tekan Baja Canai Dingin Diperkaku Sebagian
DOI:
https://doi.org/10.5614/jts.2018.25.1.3Keywords:
Struktur baja canai dingin, tekuk lokal, batang tekan tersusun, pengakuAbstract
Abstrak
Struktur baja canai dingin saat ini populer digunakan karena ringan, mudah digunakan, dan cepat dalam konstruksi. Kelemahan struktur baja canai dingin adalah tekuk lokal yang disebabkan tipisnya elemen penampang. Hal tersebut menyebabkan kegagalan struktur terjadi sebelum mencapai kapasitas beban tertinggi. Dalam penelitian ini, dua buah profil baja canai dingin yang disusun bersama pada bagian punggung dengan punggung sebagai batang tekan akan ditambahkan pengaku dengan tiga pola penempatan berbeda untuk meningkatkan ketahanan terhadap tekuk lokal. Hasil pengujian menunjukkan ketahanan terhadap tekuk lokal meningkat akibat berkurangnya panjang tekuk kritis sedangkan cara menempatkan pengaku tidak memberikan berpengaruh. Korelasi hasil kekuatan tekan antara perbedaan penempatan pengaku secara eksperimental diverifikasi menggunakan SNI 7971:2013 dan analisis elemen hingga.
Abstract
The cold formed steel structure is currently popularly used because it is lightweight, easy to use, and fast in construction. The weakness of cold formed steel structures is the local buckling caused by the thinness of the cross-sectional elements. This causes structural failure occurs before it reaches the highest load capacity. In this study, two cold formed steel profiles arranged together on back to back as compression member will be added stiffeners with three different placement patterns to improve local buckling resistance. The test results showed increased resistance to local buckling due to the reduced length of the critical buckling while the way of placing stiffeners not give effect. The correlation of compressive strengths between experimental confinement placement differences was verified using SNI 7971: 2013 and finite element analysis.
References
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Badan Standarisasi Nasional, SNI 7971:2013, Struktur Baja Canai Dingin, Indonesia.
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