岩石基坑开挖爆破时周围建筑物动力响应分析

Dynamical response analysis on buildings surrounding of rock foundation pit under excavation blasting

运用有限元软件Ansys,对三层框架结构在爆破震动作用下的动力响应进行了数值模拟,通过位移分析和速度分析验证了结构的爆破震动响应具有方向性,如垂直爆破震动作用下,垂直方向的结构震动响应起着控制作用,在对结构的分析中得出建筑最高层的位移和速度响应都是最大的。

By using Ansys finite element software, this paper made dynamic response numerical simulation to three floor frame structure under the action of blasting vibration, through the displacement analysis and velocity analysis validated the blasting vibration response of structure had direction, such as under vertical blasting vibration, the structure vibration response of vertical direction played a controlling role. The displace- ment and vdocity response gained in structural analysis of building top floor was the biggest.