基于有限元的隧道开挖变形研究  

Study of tunnel excavation deformation based on finite element method

作　　者：陈健 权娟娟[1] 杨如东 

机构地区：[1]西京学院,陕西西安710000

出　　处：《科学技术创新》2020年第28期146-147,共2页Scientific and Technological Innovation

摘　　要：该文章采用有限元COMSOL软件模拟隧道开挖变形,建立了三隧道开挖变形的二维有限元分析模型,从而进行研究分析。表面沉降量以及隧道周围塑性区域是重要的预测开挖过程中必要的的参数。为了计算地应力,需使用两个研究步骤。在第一个研究中,计算隧道开挖前土体的应力状态,在第二个研究中计算土的位移。In this paper,the finite element COMSOL software is used to simulate the tunnel excavation deformation,and a two-dimensional finite element analysis model of tunnel excavation deformation is established to conduct research and analysis.The surface settlement and the width of the plastic zone around the tunnel are important parameters to predict the excavation process.In order to calculate the ground stress,two study steps are used.In the first study,the stress state of soil before tunnel excavation was calculated,and in the second study,the elastic-plastic properties of soil were calculated.

关 键 词：隧道开挖 有限元 应力 

分 类 号：U455[建筑科学—桥梁与隧道工程]