Abstract
Incremental dynamic analysis constitutes the basis of seismic performance evaluation and seismic vulnerability assessment. In this paper, a typical two-story three-span subway station structure is selected as an example structure and its incremental dynamic analysis procedure are presented, including selection of ground motion, intensity measure and limit state determination. The incremental dynamic analysis procedure provided in this study can be a basis for further study on seismic design for underground structural systems.
Highlights
With the continuous development and utilization of urban underground space, the safety of underground structure is of great importance, especially the structural safety under seismic load
The implement of incremental dynamic analysis (IDA) for underground structure is still based on surface structure proposed by Vamvatsikos and Cornell in 2002[6] and few study focused on the detail of IDA for underground structure, such as how to choose effective intensity measure, ground motions
A two-story three-span subway station structure is taken as a typical example to illustrate the detail of IDA, mainly including selection of ground motion, intensity measure and limit state determination
Summary
With the continuous development and utilization of urban underground space, the safety of underground structure is of great importance, especially the structural safety under seismic load. The implement of IDA for underground structure is still based on surface structure proposed by Vamvatsikos and Cornell in 2002[6] and few study focused on the detail of IDA for underground structure, such as how to choose effective intensity measure, ground motions. For this purpose, a two-story three-span subway station structure is taken as a typical example to illustrate the detail of IDA, mainly including selection of ground motion, intensity measure and limit state determination. The results obtained can be the basis for further study of seismic performance for underground structure
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