软岩隧道开挖与支护的三维有限元仿真分析  

Three-dimensional FEM Simulation Analysis for Soft Tunnel during Excavation and Supporting

作　　者：张洵安[1] 王显彬[1] 

机构地区：[1]西北工业大学力学与土木建筑学院,陕西西安710072

出　　处：《郑州大学学报（工学版）》2008年第2期137-140,144,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：西北工业大学科技创新基金资助(M450211);西北工业大学研究生创业种子基金资助(Z200729)

摘　　要：为了验证某国防隧道工程设计和施工方案的可行性.根据地下结构设计理论和岩石屈服的Drucker—Prager准则,考虑到围岩的自身承载能力,用ANSYS9.0软件对该隧道的开挖与支护过程进行三维有限元模拟,对设计参数进行验证,对周边围岩变形和初期支护效果进行综合分析,得出结论:该设计方案可行,初期支护满足要求,围岩能够自行稳定.该数值分析结果与现场实测结果一致,可为相关工程设计和现场施工提供理论指导.In order to verify the possibility of design and construction scheme of a certain national defense tunnel project based on theory of structure design and guide line of Drucker - Prager for rock, taking into account of its capability bearing the weight of wall rock, the excavation and supporting for the tunnel is simulated with threedimensional FEM by ANSYS9.0 software. We verify the design parameter, comprehensively analyze transfiguration of wall rock and effect of primeval supporting. The conclusion is that the design scheme is feasible, the primeval supporting can meet a requirement, wall rock can keep steady by itself. The numerical analysis result is consistent with actual measurement outcome. It can offer academic guidance for relevant engineering design and site operation.

关 键 词：软岩隧道 有限元法 锚喷支护 三维数值模拟 

分 类 号：TU457[建筑科学—岩土工程]