[1]JIN Jianmin,XIAO Ji,TAN Ping,et al.Study on Failure Modes of Base-isolated Structures Based on IDA Method[J].Journal of Seismological Research,2020,43(03):463-470.
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Study on Failure Modes of Base-isolated Structures Based on IDA Method
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 03
Page number:
463-470
Column:
Public date:
2020-09-14
- Title:
- Study on Failure Modes of Base-isolated Structures Based on IDA Method
- CLC:
- TU352.1
- DOI:
- -
- Abstract:
- In order to study failure modes of base-isolated structures and improve the seismic performance of this kind of structure，a base-isolated structure model considered the nonlinearity of the superstructure is established by OpenSees.Firstly，11 ground motions are selected from the PEER ground motion database（PGMD），which are in good agreement with the response spectrum of seismic code.Then，according to the failure criterion of the isolation layer and the superstructure，the failure modes of the base-isolated structure are identified based on incremental dynamic analysis（IDA）method.Finally，the weakest failure mode of the base-isolated structure is optimized by different strengthening schemes.The results show that although there are some differences in the result of IDA under each ground motion input，the failure of the isolation layer occurs first，and then the superstructure fails.The seismic performance of base-isolated structures can be effectively improved by strengthening the isolation layer and the weak components of the superstructure at the same time.
- References:
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Last Update:
2020-09-18