Time-history simulation of civil architecture earthquake disaster relief- based on the three-dimensional dynamic finite element method

摘要

Earthquake action is the main external factor which influences long-term safe operation of civilconstruction, especially of the high-rise building. Applying time-history method to simulate earthquake responseprocess of civil construction foundation surrounding rock is an effective method for the anti-knock study ofcivil buildings. Therefore, this paper develops a civil building earthquake disaster three-dimensional dynamicfinite element numerical simulation system. The system adopts the explicit central difference method.Strengthening characteristics of materials under high strain rate and damage characteristics of surrounding rockunder the action of cyclic loading are considered. Then, dynamic constitutive model of rock mass suitable forcivil building aseismic analysis is put forward. At the same time, through the earthquake disaster of time-historysimulation of Shenzhen Children’s Palace, reliability and practicability of system program is verified in theanalysis of practical engineering problems.