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All Journal Disaster in Civil Engineering and Architecture
Asmaijar, Rizki
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Materials Science & Nanotechnology

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Seismic Performance of IWF and Double-channel Bracings in CBF Systems under Random Variable Amplitude Loading Panjaitan, Arief; Hayati, Yulia; Asmaijar, Rizki; Shimizu, Masaru
Disaster in Civil Engineering and Architecture Vol. 3 No. 1: April 2026 (in press)
Publisher : Popular Scientist

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70028/dcea.v3i1.74

Abstract

The Concentrically Braced Frame System (CBFs) is one of the structural systems that can withstand earthquake loads. In CBFs, the braces are an essential component to dissipate seismic energy. This research aims to find an alternative to enhance seismic capability by comparing two different sections of CBF braces: the IWF section (BU1) and the double-channel sections (BU2). Both sections have equal sectional areas, but the double-channel sections have higher cross-sectional inertia. The two brace models were then loaded by Random Variable Amplitude Loadings (RVAL). The results showed that the BU1 demonstrated better seismic capability in terms of strength, stiffness, and dissipated energy than the BU2. Moreover, to determine the effect of amplitude variability on the performance of the Single IWF and Double-channel bracing, the influence of the RVAL was analyzed, and it was revealed that increasing and decreasing displacement amplitude tend to cause increasing and decreasing strength in a polynomial trend. Meanwhile, escalating and reducing displacement amplitude leads to increasing and decreasing strength in the power trend.
Co-Authors Panjaitan, Arief Shimizu, Masaru Yulia Hayati, Yulia