隧道修复工程中垂直冻土帷幕应力场有限元分析

Analysis of vertical frozen soil wall stress field finite element in tunnel repair engineering

本文首先简要介绍了在煤矿建设中广泛应用的冻结法的应用范围,然后以上海市轨道交通4号线隧道修复工程中山南路段垂直冻结为例,在试验数据的基础上计算参数,建立有限元模型,对其应力场进行分析研究。研究过程中参数的选取、边界条件的处理、模型的建立、问题的求解及结果处理为隧道修复工程及类似工程提供了有益参考。

In this paper, the range of application of freezing method is briefly introduced firstly. Then the vertical freezing of South Zhongshan Road in the tunnel rehabilitation engineering project of the 4th track access line in Shanghai city is taken as an instance, the parameter of which is calculated on base of the test data, and the finite element model is set up to analyze and research the stress field. In the process of research, the selection of the parameters, the process of the boundary condition, the establishing of the model, the solution of the problem and the post - process of the result data provide beneficial reference for tunnel rehabilitation and analogous engineering projects.