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All Journal Aceh International Journal of Science and Technology Disaster in Civil Engineering and Architecture
Shimizu, Masaru
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Engineering Environmental Science Materials Science & Nanotechnology

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Improved Performance on Inverted V Eccentrically Braced Frames (EBF) by Implementing Shear Link and Installing Web Stiffener in Link Panjaitan*, Arief; Hasibuan, Purwandy; Putra, Rudiansyah; Afifuddin, Mochammad; Bermansyah, Surya; Hasan, Muttaqin; Fauzi, Muhammad; Haiqal, Muhammad; Imran, Muhammad; Hanafi, Muhammad Fujii; Shimizu, Masaru
Aceh International Journal of Science and Technology Vol 14, No 1 (2025): April 2025
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.14.1.44305

Abstract

Eccentrically Braced Frame (EBF) is a structural system that is advised to be built in seismically active areas since they are characterized by good stiffness and ductility. A large and stable hysteretic curve, which corresponds to good seismic performance, is produced by the combination of improved stiffness and ductility in EBF. The diagonal component of EBF, known as a brace, contributes to its stiffness. Meanwhile, the short beam, also known as the link element, provides ductility in EBF. One element that is essential as an energy dissipator in EBF is a link element. By displaying a sizable and steady hysteretic curve, a prior study found that EBF with a flexural link could effectively dissipate the seismic energy. But to achieve a higher EBF, the seismic performance still needs to be enhanced. An analysis of various EBF models in Inverted V configurations was conducted in this paper. Each model was prepared with different shear link characteristics. Installing web stiffeners in the link to improve its seismic performance was also taken into consideration in this study. To obtain seismic performance, the cyclic loads were employed to each model under conditions of yield displacement control. Analysis of the data resulted in the load-displacement hysteretic curve. Next, using the hysteretic curve, the three seismic performance parameters, i.e., strength, stiffness, and dissipation energy were further developed. The investigation showed that compared to earlier studies, the EBF with shear links showed a bigger and more stable hysteretic curve which means better dissipated energy. Additionally, adding web stiffeners significantly increases the EBF's seismic capability. Therefore, because of the improved seismic characteristics, it is advised to establish the EBF using a shear link reinforced by web stiffeners in an earthquake-hazard area.
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 Asmaijar, Rizki Haiqal, Muhammad Hanafi, Muhammad Fujii Hasan, Muttaqin Indradewa, Rhian Mochammad Afifuddin Muhammad Imran Panjaitan*, Arief Panjaitan, Arief Purwandy Hasibuan, Purwandy Rudiansyah Putra Surya Bermansyah, Surya Yulia Hayati, Yulia