Seismic destructive force evaluation method and device based on dynamic elastoplasticity and ground motion

Abstract

The invention discloses a method and a device for evaluating earthquake destructive force based on dynamic elastoplasticity and ground motion, wherein, the method comprises the following steps: obtaining measured data of ground motion records in earthquake occurrence area; the typical monomer structure is selected and the corresponding finite element analysis model is established. Obtain the macroscopic statistical data of the buildings in the earthquake-stricken area, establish the regional building database which accords with the characteristics of the buildings in the target area, and establish the analysis model of the buildings in the target area through the nonlinear time history analysis of the earthquake response of the urban buildings; The dynamic elastoplastic time history analysis is carried out according to the finite element analysis model and the target area building analysis model, and the earthquake destructive power is evaluated according to the analysis results. Thismethod can evaluate the earthquake destructive power accurately and quickly, and provide strong support for the disaster relief work after the earthquake.

Description

technical field [0001] The invention relates to the technical field of civil engineering applications, in particular to a method and device for evaluating earthquake destructive force based on dynamic elastoplasticity and ground motion. Background technique [0002] Accurate and rapid assessment of building damage after an earthquake is of great significance for earthquake relief. The experience of several major earthquake disasters in recent years shows that the ability to evaluate the actual earthquake damage in the disaster area needs to be further improved. After an earthquake, the communication in the disaster area is often poor, and the site lacks organization. It is difficult to have enough professionals to evaluate the earthquake damage in a short period of time. At the same time, the spread of false statements on the Internet may interfere with the normal acquisition of disaster relief information and decision-making. Therefore, it is necessary to propose a scienti...

AI Technical Summary

Problems solved by technology

[0004] However, the problems existing in the existing system mainly include: (1) It is difficult to fully consider the dynamic characteristics of earthquake motion with a single input of earthquake motion parameters; It is difficult to give accurate seismic damage prediction results; (3) The capacity-demand analysis method based on static pushover is difficult to consider the characteristics of duration and velocity pulse of earthquake motion

Images