铁道标准设计Issue(10)：139-142,143,5.DOI:10.13238/j.issn.1004-2954.2015.10.031
基于Biot固结方程研究地下水位对隧道防水型衬砌的内力影响
Study on the Impact of Underground Water Level on Internal Force of Tunnel Waterproof Lining Based on Biot Consolidation Equation
摘要
Abstract
Underground water level is an important factor that affects the mechanical behavior of tunnel waterproof lining. In order to study the effect of underground water level changes on water proof lining, Biot consolidation equation is used to calculate 17 different conditions of underground water level. FLAC3D finite differential method of numerical simulation and homogeneous isotropic seepage model are employed to obtain the internal force of tunnel lining structure under different working conditions. Through the analysis of the internal force of lining under different water level, the law of the influence of underground water level changes on the waterproof tunnel lining stress is then fined. The calculation results show that when the underground water level is more than 3 times greater than the radius of the tunnel, and the axial force on the arch and spandrel arch wall doesn’t change with the change of the water level; when the ground water level changes, the vault is the most unfavorable position, while the arch wall is a safe one.关键词
地下水位/圆形隧道/防水型衬砌/Biot固结方程Key words
Underground water level/Circular tunnel/Waterproof lining/Biot consolidation equation分类
交通工程引用本文复制引用
王志杰,王宁,何晟亚..基于Biot固结方程研究地下水位对隧道防水型衬砌的内力影响[J].铁道标准设计,2015,(10):139-142,143,5.基金项目
中央高校基本科研业务费专题项目(SWJTU11ZT33) （SWJTU11ZT33）
