大断面公路隧道施工围岩稳定性数值分析  

NumericalAnalysis on Stability of Surrounding Rock during Construction of Large-Span Highway Tunnel

作　　者：林宝龙[1] 马祥旺[2] 

机构地区：[1]石家庄铁路职业技术学院,河北石家庄050041 [2]石家庄铁道学院,河北石家庄050043

出　　处：《石家庄铁路职业技术学院学报》2007年第1期7-11,共5页Journal of Shijiazhuang Institute of Railway Technology

摘　　要：针对昆-石高速公路阳宗隧道断面跨度大的特点,通过经济技术、操作难易程度的综合比较,阳宗隧道使用WTD系统锚杆支护对围岩进行加固,效果良好。使用高性能混凝土作为隧道二次衬砌,降低病害的发生,减少整治麻烦,给隧道施工和运营都带来极大的方便。采用地层-结构模式,运用同济曙光软件分析地质条件较差的Ⅴ级围岩隧道施工方法对围岩稳定性的扰动规律,计算结果表明施工方法选择合理;采用荷载-结构模式,应用有限元软件—ANSYS对二衬结构的安全性进行检算,计算结果表明该隧道衬砌结构设计合理、安全性好。Based on the characteristic of large-span of Yangzong tunnel of kunming-Shilin expressway and through analyzing different operating plans, WID systematic bolts are usea in Yangzong tunnel, wnlcn is high praised by engineers. In addition, high-performance concrete is used in lining in Yangzong tunnel and this makes tunnel construction and operation become easier. This paper analyzes the influence rules of tunnel construction on No. V surrounding rock stability using finite element program-Tongjishuguang by individual body model, and numerical results prove that the construction method is very reasonable. Then the safety of lining is tested using finite element program-ANSYS by action-reaction model, numerical results prove that the design of lining is very reasonable and the lining has a high security.

关 键 词：大断面隧道 围岩稳定性 WTD系统锚杆 数值模拟 

分 类 号：U542[交通运输工程]