Method for analyzing seismic vulnerability based on extending PBEE2 theoretical framework

Abstract

The invention discloses a method for analyzing seismic vulnerability based on extending PBEE2 theoretical framework, and belongs to the technical field of seismic risk and seismic hazard prediction analysis. The method comprises the steps that 1, a typical structural space is built: 1.1, ratios of the intensity, the height and the width of seismic fortification are selected as the dominant parameters affecting the structural seismic performance; 1.2, the typical structural space is built based on the principle of logic tree; 1.3, every typical structure is designed by adopting PKPM; 2, a correlation matrix of the parameters of the main design structure and the parameters of a probabilistic seismic demand model of the main design structure is built; 3, a probabilistic seismic vulnerability function is assigned based on a class of logarithmic normal distribution. The method achieves the building of a class of functions for resolving seismic vulnerabilities; the method is simple and reliable to operate, and provides a theoretical foundation for rapid prediction of regional seismic damage of a city complex, and is more suitable for the prediction of regional seismic damage of the city complex.

Description

technical field [0001] The invention relates to the technical field of earthquake risk and earthquake damage prediction analysis, and more specifically, relates to an analysis method for earthquake vulnerability based on the extended PBEE2 theoretical framework. Background technique [0002] my country is a country prone to earthquakes. Earthquakes have brought irreparable damage and losses to the country and its people. For example, the Wenchuan Earthquake in 2008 caused huge casualties and economic losses. Due to the impossibility of accurate earthquake prediction, it is necessary to The risk analysis of disasters, especially the earthquake vulnerability analysis of civil engineering structures has become the main disaster prevention and mitigation measures in current engineering. Most of the studies on seismic vulnerability in our country stay at empirical seismic vulnerability, and due to the lack of seismic damage data, there are only a few structural types of buildings,...

AI Technical Summary

Problems solved by technology

Obviously, if you want to build a numerical model of a building, but only three building attributes have been determined, such as the number of floors, vertical irregularity and plane irregularity, there must be great uncertainty in the establishment of the model, which leads to the evaluation of Reduced accuracy

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