Effects of Bracing Arrangement along the Building Height on Collapse Fragility Curve of Steel Braced Frame Systems

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Hashemi Shahandashti Seyed Reza; SEYED KAZEMI ALI

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Paper Information

Journal: JOURNAL OF STRUCTURAL ENGINEERING Year:2018 | Volume:15 | Issue:2 Page(s): 11-19

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Information Journal Paper

Title

Effects of Bracing Arrangement along the Building Height on Collapse Fragility Curve of Steel Braced Frame Systems

Author(s)

Hashemi Shahandashti Seyed Reza | SEYED KAZEMI ALI | Issue Writer Certificate

Keywords

bracing arrangement

steel braced frame

collapse fragility curve

collapse capacity

incremental dynamic analysis (IDA)

Abstract

The steel braced frame system is one of the lateral load resisting systems which is used extensively for low-to mid-rise buildings. In this structural system, the braces can be arranged in different forms along the building height due to different reasons such as architectural and structural limitations or design considerations. The bracing arrangement affects the seismic performance of the structural system and each of the elements. In this study, the impact of bracing arrangement along the building height on ultimate failure capacity and collapse fragility curves of steel CBFs is investigated. For this purpose, 4 and 8-story steel CBF buildings with 6 different arrangements of braces were selected and modeled in PERFORM-3D software. The models were then analyzed using the incremental dynamic analysis (IDA) method. Afterwards, the collapse capacity of the models and the uncertainty index were calculated, and the collapse fragility curves were generated. The results show that, by modifying the arrangement of braces without significant changes in lateral stiffness and fundamental period of structure, it is possible to increase the collapse spectral acceleration and decrease the probability of collapse at the maximum considered earthquake intensity.

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APA: Copy

Hashemi Shahandashti, Seyed Reza, & SEYED KAZEMI, ALI. (2018). Effects of Bracing Arrangement along the Building Height on Collapse Fragility Curve of Steel Braced Frame Systems. JOURNAL OF STRUCTURAL ENGINEERING, 15(2 ), 11-19. SID. https://sid.ir/paper/407870/en

Vancouver: Copy

Hashemi Shahandashti Seyed Reza, SEYED KAZEMI ALI. Effects of Bracing Arrangement along the Building Height on Collapse Fragility Curve of Steel Braced Frame Systems. JOURNAL OF STRUCTURAL ENGINEERING[Internet]. 2018;15(2 ):11-19. Available from: https://sid.ir/paper/407870/en

IEEE: Copy

Seyed Reza Hashemi Shahandashti, and ALI SEYED KAZEMI, “Effects of Bracing Arrangement along the Building Height on Collapse Fragility Curve of Steel Braced Frame Systems,” JOURNAL OF STRUCTURAL ENGINEERING, vol. 15, no. 2 , pp. 11–19, 2018, [Online]. Available: https://sid.ir/paper/407870/en

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