基于ABAQUS有限元模拟的综合管廊抗震数值分析

Seismic Numerical Analysis of the Utility Tunnel Based on ABAQUS Finite Element Simulation

当前我国地下空间建设处于高速发展阶段,尤其是地下综合管廊建设。文章通过ABAQUS有限元软件,以某实际工程为案例,建立三维精细化有限元模型。通过观测综合管廊沿轴线方向相邻管环环间张开量、米塞斯应力云图以及不同观测点处的位移时程来分析地震作用下综合管廊的位移响应情况。结果表明:综合管廊在穿越土层交界位置处时,地震响应较大,应在此部位加强抗震设计。

At present,China's underground space construction is at a stage of rapid development,especially the construction of underground utility tunnel.This paper uses ABAQUS finite element software to take a practical project as a case to establish a three-dimensional refined finite element model.The displacement response of the integrated pipe gallery under earthquake was analyzed by observing the opening amount between adjacent pipe rings and rings of the integrated pipe gallery along the axial direction,Mises stress clouds,and displacement time history at different observation points.The results show that when the comprehensive pipe gallery crosses the boundary of the soil layer,the seismic response is large,and the seismic design should be strengthened at this location.