Rebuilt underground structure earthquake analysis method combined with reaction acceleration method

By combining response spectrum seismic analysis and response acceleration method, an overall structural calculation model was established, which solved the problem of soil-structure interaction in the seismic calculation of composite underground structures and realized simplified seismic design.

CN120930412APending Publication Date: 2025-11-11EAST CHINA ARCHITECTURE DESIGN AND RESEARCH INSTITUTE CO LTD
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Patent Information

Application Number
CN202511021781.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-24
Publication Date
2025-11-11

AI Technical Summary

Technical Problem

Existing technologies cannot easily account for the interaction between site soil, underground structure and above-ground structure, especially the calculation of seismic action of composite underground structures lacks simplified analysis methods.

Method used

A combined approach of response spectrum seismic analysis and response acceleration method was adopted to establish an overall structural calculation model including the foundation and the soil surrounding the underground structure. The response spectrum seismic analysis did not consider the unit weight and inertial force of the underground structure and soil, while the response acceleration method analysis considered the unit weight and inertial force of the underground structure and soil. Finally, the seismic design of the components was carried out by superimposing internal forces under the most unfavorable combination of working conditions.

Benefits of technology

It enables a quick and convenient consideration of the interaction between site soil, underground structure and above-ground structure, simplifying the seismic calculation and seismic design of reconstructed underground structures.

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Abstract

The invention provides a rebuilt underground structure earthquake analysis method combined with a reaction acceleration method, and the method comprises the steps: building an overall structure calculation model which comprises a foundation and a soil body around an underground structure, and the overall structure calculation model comprises an overground structure, the underground structure, the soil body around the underground structure, and the loads of the overground structure and the underground structure; carrying out response spectrum seismic analysis without considering the weight and inertia force of an underground structure and a soil body; then, canceling lateral constraint of a soil body boundary around an outer wall of the underground structure, and carrying out response acceleration method analysis on the underground structure; and performing most disadvantageous superposition and combination on the members of the underground structure in the overall calculation model according to internal force calculated by response spectrum seismic analysis and a response acceleration method, and performing aseismic design of the members. According to the method, the interaction influence of the site soil body, the underground structure and the overground structure can be quickly and conveniently considered, simplified calculation of the earthquake action of the rebuilt underground structure is achieved, and aseismic design can be carried out.
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