Method for rapidly evaluating earthquake damage of urban building group and bridge group

Abstract

The invention relates to a method for rapidly evaluating earthquake damage of a city building group and a bridge group. The invention relates to the technical field of earthquake engineering. According to the method, basic information of the building group and the bridge group is collected; according to the collected basic information of the building group and the bridge group, the earthquake resistance capacity of the building group and the bridge group is determined; the spectral acceleration is calculated according to acceleration time history data of seismic oscillation input by each building or bridge and basic information of the building or bridge; and the earthquake damage condition is evaluated according to the spectral acceleration calculated according to the input acceleration time history data of the earthquake oscillation and the earthquake resistance capability of the building or the bridge. The method is high in calculation efficiency, building group modeling and bridge group modeling in the city are not needed, the required basic information of the city building group and bridge group is less, and the method can be used for earthquake damage prediction and earthquake damage analysis of the city earthquake scene.

Description

technical field [0001] The invention relates to the technical field of earthquake engineering, and relates to a method for rapidly evaluating earthquake damage of urban building groups and bridge groups. Background technique [0002] Cities, as economic and population-intensive centers, will cause huge loss of human life and economic property when encountering large-scale natural disasters. In order to carry out timely rescue in the disaster-affected area after the disaster, it is very important to quickly assess the damage of buildings and bridges in the disaster-affected area. [0003] Due to the different types of buildings and bridges in the city, it is a difficult problem to consider the use of a unified method for earthquake damage assessment of buildings and bridges constructed in different construction years, different structure types, and different site conditions. On the other hand, it is often difficult to obtain detailed design data for most buildings and bridge...

AI Technical Summary

Problems solved by technology

On the other hand, it is often difficult to obtain detailed design data of buildings and bridges when performing seismic damage assessment and seismic capacity analysis on most buildings and bridges in the city

[0004] The seismic vulnerability matrix is ​​determined according to the statistical data of earthquake damage of buildings and bridges. The seismic vulnerability matrix gives the probability of each type of buildings and bridges reaching a certain damage state under a given seismic intensity. This method Historical statistical data is required, and it is not applicable to areas lacking historical earthquake damage data; nonlinear time history analysis can analyze the dynamic response of buildings and bridges under the action of a given earthquake time history, and further analyze the damage status of buildings and bridges , but the establishment of fine finite element models for nonlinear time-history analysis requires detailed design data and consumes a large amount of computer computing power; the establishment of simplified models for buildings and bridges in cities only requires macro design data, but the establishment of simplified models needs to meet structural rule premise

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