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Date:2022-08-29

Indexed by:Journal Article

Date of Publication:2022-06-29

Journal:大连理工大学学报

Institution:建设工程学部

Issue:3

Page Number:344-348

ISSN:1000-8608

Abstract:The 3-D seismic response analysis of underground structures is difficult because of dynamic interaction with the wall rocks. The characteristics of the dynamic stiffness of the unbounded rock medium are analyzed using the damping solvent extraction method and a practical method for underground structures-wall rock interaction system is proposed. The effects of some key factors such as seismic input mechanism, dynamic stiffness and radiation damping on the seismic response of underground structure are studied incorporated with the Xiluodu hydraulic power plant using the proposed practical dynamic interaction analysis method. It is demonstrated that the damping of the unbounded medium has great effects on the seismic input mechanism and the seismic response of underground structure, and the applicable conditions of several approximate methods often used for underground structures seismic response analysis are also studied.

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