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Simplified Seismic Design Method for Shanghai Underground Structures in Soft Soils
Abstract This paper presents a simplified seismic design method, the equivalent horizontal seismic inertial force method (EHSIFM), for underground structures in soft soils, especially for application in Shanghai subway structures. The EHSIFM utilizes the quasi-static approach. In this approach, the effects of equivalent horizontal seismic inertial forces, representing the dynamic forces induced by an earthquake, are imposed on the underground structures. Several parameters are derived through numerical correlation using values of embedded depth and soil types typical to Shanghai. The principle of equivalent limit state is adopted, in which the maximum internal force as well as its position on the underground structure under inertial forces, is identical to the real value. A sample design on a modeled double-story three-span subway station in soft soils is also conducted. Analytical results show that the EHSIFM is simple yet accurate enough to reflect structural seismic responses in an earthquake.
Simplified Seismic Design Method for Shanghai Underground Structures in Soft Soils
Abstract This paper presents a simplified seismic design method, the equivalent horizontal seismic inertial force method (EHSIFM), for underground structures in soft soils, especially for application in Shanghai subway structures. The EHSIFM utilizes the quasi-static approach. In this approach, the effects of equivalent horizontal seismic inertial forces, representing the dynamic forces induced by an earthquake, are imposed on the underground structures. Several parameters are derived through numerical correlation using values of embedded depth and soil types typical to Shanghai. The principle of equivalent limit state is adopted, in which the maximum internal force as well as its position on the underground structure under inertial forces, is identical to the real value. A sample design on a modeled double-story three-span subway station in soft soils is also conducted. Analytical results show that the EHSIFM is simple yet accurate enough to reflect structural seismic responses in an earthquake.
Simplified Seismic Design Method for Shanghai Underground Structures in Soft Soils
Chen, Z. Y. (author) / Li, W. Y. (author) / Yang, L. D. (author)
Indian Geotechnical Journal ; 44 ; 149-155
2014-02-07
7 pages
Article (Journal)
Electronic Resource
English
Simplified Seismic Design Method for Shanghai Underground Structures in Soft Soils
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