Rock and Soil Mechanics ›› 2019, Vol. 40 ›› Issue (8): 3247-3254.doi: 10.16285/j.rsm.2018.0751

• Numerical Analysis • Previous Articles     Next Articles

Research on generalized response displacement method for seismic analysis of underground structures with complex sections

XU Zi-gang, DU Xiu-li, XU Cheng-shun, HAN Run-bo, QIAO Lei   

  1. Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing 100124, China
  • Received:2018-08-02 Online:2019-08-12 Published:2019-08-26
  • Supported by:
    This work was supported by the National Key R&D Program of China (2018YFC1504305), the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (51421005) and the Program for Innovative Research Team in University of Ministry of Education of China (IRT13044).

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Abstract: The response displacement method (RDM) is recommended by Code for seismic design of urban rail transit structures (GB 50909?2014). However, this RDM method has certain limitations in the seismic analysis of underground structure. Based on the theory of RDM, the generalized response displacement method (GRDM) is proposed for seismic analysis of underground structures with complex cross-sections in this paper. Firstly, based on the substructure analysis method, this paper theoretically proves the consistency between RDM and GRDM and also introduces the mechanics model and implementation steps of GRDM in detail. Then, in combination with an actual tunnel structure with horseshoe cross-section, the validity and accuracy of the proposed method for calculating different areas of generalized sub-structure is verified under different seismic intensities, based on the dynamic time history analysis method. The analysis results show that the proposed method is a simplified analysis method with simple operation, high precision, and strong practicability, which can be used in the seismic analysis and design of the underground structures with various complex sections.

Key words: underground structure, seismic analysis, generalized response displacement method, complex section

CLC Number: 

  • TU 311
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