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IDA-based seismic fragility of high-rise frame-core tube structure subjected to multi-dimensional long-period ground motions by Yu Cheng; Yao-Rong Dong; Guo-Liang Bai; Yuan-Yuan Wang is a Engineering article available to read on EtoBox.

What is IDA-based seismic fragility of high-rise frame-core tube structure subjected to multi-dimensional long-period ground motions about?

Due to resonant effects, a lot of high-rise structures could be severely damaged under long-period seismic excitations. In this study, the seismic fragility method based on incremental dynamic analysis (IDA) is employed to quantitatively evaluate the damage levels of high-rise structures under long-period ground motions. Firstly, the frequency contents of special long-period ground motions are analyzed. Then, the finite element models of highrise frame-core tube structures are established and verified. Lastly, the IDA curve clusters, quantile curves, probabilistic demand models, exceeding probability curve and seismic fragility matrix of the structure under multi-dimensional long-period ground motions are researched respectively. The analytical results show the amplitude contents of long-period ground motions are mainly distributed in the narrow low-frequencies band. Long-period earthquake is more likely to cause structural collapse than ordinary earthquake under large earthquake intensity, and the seismic fragility analysis based on a certain exceeding probability needs to consider the adverse effect of the increased horizontal translational components. The research conclusions wi

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Author

Yu Cheng; Yao-Rong Dong; Guo-Liang Bai; Yuan-Yuan Wang

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Engineering (Physical Sciences)