隧道台阶法施工的数值模拟与分析  

Numerical Simulation and Analysis of Tunnel Construction with Benching Method

作　　者：霍润科[1,2] 于振振[1] 岳齐贤[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]结构工程与抗震教育部重点实验室,陕西西安710055

出　　处：《水利与建筑工程学报》2011年第1期6-9,46,共5页Journal of Water Resources and Architectural Engineering

基　　金：陕西省自然科学基础研究计划资助项目(2009JM7005);陕西省重点学科建设专项资金资助项目(E01004);西安建筑科技大学人才科技项目基金(RC0708)

摘　　要：在隧道施工过程中,评价围岩稳定性是一项重要工作。结合广东某隧道工程状况,利用有限元软件模拟了隧道的动态开挖过程,分析了开挖过程中围岩应力和应变的变化规律,并对施工过程中位移量较大及应力集中现象比较明显的部位进行了划分,确定了施工现场重点监测和支护区域,确保施工过程中围岩的稳定性和安全性。The evaluation of stability of the surrounding rock is an important job in tunnel construction.Combined with the engineering conditions of some tunnel in Guangdong Province,the 2-D finite element model is used to simulate the dynamic excavation of the tunnel,meanwhile analyze the deformation rules of stress and strain of the surrounding rock and the conditions of large displacement and significant stress concentration,then determine the main monitoring and supporting regions,so as to ensure the stability and safety of the surrounding rock in the construction.

关 键 词：二维非线性有限元法 围岩稳定性 台阶法 

分 类 号：U455[建筑科学—桥梁与隧道工程]