柱顶设置滑移支座时地铁地下车站结构抗震性能分析

Hazard Control in Tunnelling and Underground Engineering

2019, Vol. 1

Issue (3): 57-67 DOI:

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Seismic performance of underground subway station with elastic slipping bearing fixed on the top of columns

ZHUANG Haiyang^1,2, FU Jisai¹, ZHU Mingxuan¹, CHEN Su³, CHEN Guoxing¹

1. Institute of Geotechnical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China;
2. School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, Jiangxi, China;
3. Institute of Geophysics, China Earthquake Administration, Beijing 100124, China

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Abstract The elastic sliding isolation bearings were fixed at the top of the middle columns, a two-dimensional finite element model for the static-dynamic coupling interaction of soil-underground structure was established, and the seismic response of underground subway station, such as the lateral deformation, stress responses and the seismic damage were analyzed. It showed that the elastic sliding bearings fixed on the top of columns could effectively mitigate the seismic damage of the middle columns and the middle plate and keep middle columns completely under compress condition during the earthquake. As a result, it could improve the overall seismic performance of the underground station structure due to the important role of middle columns in the seismic resistance of underground subway station. However, the elastic sliding bearings fixed on the top of columns could also weaken the anti-lateral rigidity of the underground station structure and the plane buckling rigidity of the plates, which significantly amplified the lateral deformation response of the underground station structure. Meanwhile, middle columns changed the dynamic deformation mode of the underground station structure, which obviously aggravated the seismic damages of the top and bottom plates close to the side wall of the underground station structure.

Key words： structure of underground subway station elastic sliding bearing aseismic performance seismic damage numerical simulation

Received: 17 May 2019 Published: 13 November 2019

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ZHUANG Haiyang,FU Jisai,ZHU Mingxuan, et al. Seismic performance of underground subway station with elastic slipping bearing fixed on the top of columns[J]. Hazard Control in Tunnelling and Underground Engineering, 2019, 1(3): 57-67.

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http://tunnel.sdujournals.com/EN/ OR http://tunnel.sdujournals.com/EN/Y2019/V1/I3/57

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