隧道开挖有限元模型合理尺寸的选择  

The Reasonable Selection of Finite Element Model of Tunnel Excavation

作　　者：王俊[1] 张艳玲[2] 褚少辉 张涛[2] 

机构地区：[1]河北建设勘察研究院有限公司,石家庄050031 [2]河北建研科技有限公司,石家庄050021

出　　处：《华北地震科学》2016年第B07期35-39,共5页North China Earthquake Sciences

摘　　要：借助ANSYS有限元分析软件,采用弹塑性方法及Drucker-Prager屈服准则,利用开挖卸荷等效节点力原则,进行隧道二维平面应变模拟。同时,对不同模型尺寸下围岩的应力、变形结果进行对比分析。通过研究分析,确定有限元数值分析时合理模型尺寸,得到有益的结论,并为有限元模拟提供有意义的借鉴。In this paper, established finite element model by large general software A N Stwo-dimensional plane strain numerical simulation and load equivalent nodal force to the tunnel excavation with elastic-plastic method and Drucker-Prager yield criterion. By analysis of the variation of surrounding rock stress condition, deformation in different conditions. Through research and analysis, to determine reasonable model size of finite element numerical analysis, the conclusions can provide a meaningful ence for finite element simulation.

关 键 词：隧道开挖 合理模型尺寸 数值分析 

分 类 号：U451[建筑科学—桥梁与隧道工程]