Surface Overpressure Distribution and Dynamic Response of the Retaining Wall of the Underground Structure Subjected to Inner Explosion
An underground structure has been in a state of static equilibrium under the combined effect of gravity and the surrounding soils confining pressure before internal explosion occurred,and the blast wave can experience multiple reflections and diffractions in closed space,so the overpressure on the surface of structural members was more complex than that when explosion happened in the open space.In this paper,a finite element model of a closed underground frame structure was established by using the finite element software ANSYS/LS-DYNA.Based on the model,numerical simulation by stages was done to study the overpressure distribution on the surface of the retaining wall.This paper main analyzed the effect of the initial balance stress on the blast overpressure distribution rule and the retaining walls dynamic response.
Blast overpressure Closed structure Initial equilibrium stress Dynamic response
Li Tian Peng Deng
School of Civil Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Coast Civil St School of Civil Engineering,Tianjin University,Tianjin 300072,China
国际会议
西安
英文
417-421
2013-07-27（万方平台首次上网日期，不代表论文的发表时间）