Effects of hysteretic models on the seismic evaluation of a collapsed irregular building from bidirectional near-fault ground motions on a shake table
Journal
Engineering Structures
Journal Volume
247
Date Issued
2021
Author(s)
Lin J.-L
Chen W.-H
Hsiao F.-P
Weng Y.-T
Shen W.-C
Weng P.-W
Chao S.-H
Chung L.-L
Hwang S.-J.
Abstract
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. ? 2021 Elsevier Ltd
Subjects
Hysteretic model
Concrete buildings
Hysteresis
Reinforced concrete
Seismology
Component tests
Cyclic components
Incremental dynamic analysis
Irregular buildings
Near fault ground motion
Reinforced concrete buildings
Seismic evaluation
Shake table
Soft-bottom
Numerical models
building
concrete structure
dynamic analysis
earthquake damage
ground motion
numerical model
seismic response
shaking table test
structural response
Type
journal article