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| Hybrid simulation for aseismic performance of subway station with its RC central column as test specimen |
| YANG Chengyu1, CAI Xuesong2, YUAN Yong1，2 |
1.State Key Lab of Disaster Prevention In Civil Engineering, Tongji University, Shanghai 200092, China;
2.Department of Underground Architecture and Engineering, Tongji University, Shanghai 200092, China |
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Abstract The issue of scale ratio still exists in the seismic performance test of underground structures. Hybrid simulation is adopted to study the seismic performance of structure of a subway station under earthquake excitation. The central column is selected as the full-scale specimen of experimental substructure, the remaining parts of the structure and soil surrounding the station are taken as numerical substructure. In terms of the test results, as the Peak Base Acceleration (PBA) increases, the specimen reaches the plastic working state and its lateral stiffness decreases. When the input motion is Shanghai artificial wave (bedrock wave), the shear force and displacement of analytical model match well with results of hybrid simulation in the elastic working state. The results show that hybrid simulation system based on OpenSee, OpenFresco, and MTS has good stability and accuracy when applied in underground structures seismic issues.
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Received: 15 March 2019
Published: 28 July 2020
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