Underground structure anti-seismic performance and earthquake vulnerability analysis method and modeling system

Abstract

The invention discloses an underground structure anti-seismic performance and earthquake vulnerability analysis method and modeling system, the underground structure anti-seismic performance and earthquake vulnerability modeling system comprises a Python system, an Abaqus system and a Matlab system, and data exchange, calling and analysis are carried out among the three systems. The seismic oscillation time history records meeting the requirements can be rapidly screened and automatically called to the Inp file, and batch processing of seismic oscillation input is efficiently achieved; and the earthquake damage level of the underground structure can be automatically identified according to the average earthquake damage value of the key section of the underground structure, and the interlayer displacement angle limit value of each damage level is automatically output, so that an index system better conforms to specific working conditions. The relevance between the underground structure seismic response and the soil surface seismic oscillation information can be quickly evaluated and analyzed, and the optimal seismic oscillation intensity parameter is given.

Description

technical field [0001] The invention relates to the technical field of seismic performance and seismic vulnerability analysis methods of underground structures, and more specifically relates to an underground structure seismic performance and seismic vulnerability analysis method and a modeling system. Background technique [0002] With the rapid advancement of China's urbanization, the rail transit in major cities has developed rapidly, among which the subway accounts for 70% of the total mileage of rail transit operation. At the same time, the earthquake resistance of the underground station structure of the subway has also attracted the attention of the engineering and academic circles. . The performance-based seismic design concept has gradually become the main direction of the development of seismic design of underground structures, and it is imminent to establish an index system for the seismic performance of underground structures based on certain probability guarante...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an underground structure seismic performance and seismic vulnerability analysis method and modeling system, which solves the problem that most of the existing methods for analyzing the seismic performance of underground structures are based on deterministic methods. The method provides an analysis method for the seismic performance of underground structures that fully considers uncertain factors, that is, predicts the conditional probability of various damage levels of underground structures under different intensities of earthquakes, and macroscopically describes the performance of the structure beyond a specific performance target under a specific earthquake intensity. Probability, providing reference for seismic design of underground structures, earthquake risk decision-making and rapid post-earthquake assessment

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