穿黄盾构隧道管片支护的ABAQUS有限元模拟分析

ABAQUS Finite Meta-Analysis of the Shield Tunnel Segment Support under the Yellow River

本文依托兰考至原阳高速公路段穿越黄河隧道项目,结合隧洞穿越段黄河区域特殊的地质情况,对下穿黄河公路盾构隧道管片支护进行ABAQUS有限元模拟计算分析。其间利用ABAQUS有限元分析软件,分别计算出流固耦合情况下两种管片支护工况的地层位移与地层应力以及隧道管片的变形与应力,通过对比分析两种工况下的计算结果,综合考虑工程的安全性与经济性,提出了穿黄隧道支护管片的合理厚度。

Based on tunnel project across the Yellow River of the Lankao-Yuanyang Expressway section,combined with the special geological conditions of the Yellow River region of the tunnel crossing section,the ABAQUS finite el⁃ement simulation calculation analysis was carried out on the segment support of the highway shield tunnel under the Yellow River in this paper.In the meantime,by using the ABAQUS finite element analysis software,under the fluidsolid coupling condition,the formation displacement and formation stress,and the deformation and stress of the tun⁃nel segment were calculated for the two segment support conditions,and by comparing and analyzing the calculation results under the two working conditions,comprehensively considering the safety and economy of the project,the rea⁃sonable thickness of the supporting segment of the tunnel under the Yellow River was proposed.