Effects of hysteretic models on the seismic evaluation of a collapsed irregular building from bidirectional near-fault ground motions on a shake table

•Shake and numerically simulate an irregular building model until its collapse.•The effect of bi-directional earthquakes is considered.•The effect of the hysteretic models on the full range of the seismic responses of the building is addressed. A 7-story reinforced concrete building with a soft bott...

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Bibliographic Details
Published in:Engineering structures 2021-11, Vol.247, p.113087, Article 113087
Main Authors: Lin, Jui-Liang, Chen, Wen-Hui, Hsiao, Fu-Pei, Weng, Yuan-Tao, Shen, Wen-Cheng, Weng, Pu-Wen, Chao, Shu-Hsien, Chung, Lap-Loi, Hwang, Shyh-Jiann
Format: Article
Language:English
Subjects:
Concrete
Concrete construction
Ground motion
Horizontal orientation
Hysteresis
Hysteretic model
Mathematical models
Numerical models
Reinforced concrete
Seismic analysis
Seismic response
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Summary:•Shake and numerically simulate an irregular building model until its collapse.•The effect of bi-directional earthquakes is considered.•The effect of the hysteretic models on the full range of the seismic responses of the building is addressed. A 7-story reinforced concrete building with a soft bottom story and plan-asymmetry in one horizontal direction was collapsed on a shake table by generation of bi-directional near-fault ground motions. The numerical model of the 7-story building is introduced and verified through a comparison with the experimental results. The hysteretic models of the verified numerical model are calibrated according to static cyclic component tests. To assume the condition that the static cyclic component tests are not available, the hysteretic models of some critical structural components are intentionally altered. Three additional numerical models of the building, which serve as the distorted numerical models, are obtained from the combinations of the altered hysteretic models. Incremental dynamic analyses (IDA) are applied to the four numerical models of the building (i.e., one verified model and three distorted models). Comparing the IDA results of the four numerical models helps to elucidate the effect of the hysteretic models on the full range of the seismic responses (i.e., from elastic response to total collapse) of the building.
ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2021.113087