Numerical study on the seismic response of the underground subway station- surrounding soil mass-ground adjacent building system
Numerical study on the seismic response of the underground subway station- surrounding soil mass-ground adjacent building system
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DOI：
10.1007/s11709-016-0381-7
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发表时间：
2017-05
影响因子：
3
通讯作者：
Guobo Wang;Ming-Xin Yuan;Xianfeng Ma;Jun Wu
中科院分区：
文献类型：
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作者：
Guobo Wang;Ming-Xin Yuan;Xianfeng Ma;Jun Wu
由于城市土地资源有限，地铁站上方的地面建筑数量迅速增加。本文通过数值分析研究了地下地铁车站-周围土体-地面邻近建筑物（USG）系统在不同地震荷载作用下的地震响应。根据实际工程，从计算域、边界条件、土体与结构接触特性等方面建立了数值模型。还研究了地铁车站与地面邻近建筑物之间的相互影响及其对周围土体动力特性的影响。通过数值研究发现，地下结构对周围土体动力特性的影响取决于其自身尺寸，且地下结构的存在对地面邻近建筑物的地震响应有一定的影响。由于地下结构和地面邻近建筑物的存在，USG系统产生的垂直加速度不可忽略。研究结果可为USG系统结构抗震设计提供参考。
Ground buildings constructed above metro station have increased very quickly due to the limited land resources in urban areas. In this paper, the seismic response of the Underground subway station-Surrounding soil mass-Ground adjacent buildings (USG) system subjected to various seismic loading is studied through numerical analysis. The numerical model is established in terms of the calculation domain, boundary condition, and contact property between soil and structure based on the real project. The reciprocal influence between subway station and ground adjacent building, and their effects on the dynamic characteristics of surrounding soil mass are also investigated. Through the numerical study, it is found that the impact of underground structure on the dynamic characteristics of the surrounding soil mass depends on its own dimension, and the presence of underground structure has certain impact on the seismic response of ground adjacent building. Due to the presence of underground structure and ground adjacent building, the vertical acceleration generated by the USG system cannot be ignored. The outcomes of this study can provide references for seismic design of structures in the USG system.