摘要
以V级围岩条件下石家庄某浅埋小净距公路隧道为工程背景,采用有限元软件ANSYS,对采用不同施工方案的隧道进行数值模拟。对比分析了单侧壁导坑法、CRD法、上下台阶法和CD法4种施工方案的隧道拱顶沉降、拱底隆起和地表沉降的变化规律。结果表明:在控制围岩竖向变形和地表沉降方面,CRD法最有效,上下台阶法最差;随着隧道埋深的增加,地表沉降槽由2个变成1个。研究结果对类似工程的设计和施工具有参考价值。
Taking a shallow highway tunnel with small spacing in Shijiazhuang under the condition of V-class surrounding rock as the engineering background,the finite element software ANSYS was used to simulate the tunnel with different construction schemes.The variation laws of tunnel vault settlement,arch bottom bulging and surface settlement of four kinds of construction schemes including side-drift method,CRD method,step method and CD method were compared and analyzed.The results show that CRD method is the most effective in controlling vertical deformation and surface settlement of surrounding rock,and the step method is the worst;as the depth of the tunnel increases,the settlement trough turns from two into one.The research results have reference value for the design and construction of similar projects.
作者
甄卫刚
刘淑红
王自豪
ZHEN Wei-gang;LIU Shu-hong;WANG Zi-hao(Department of Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, Hebei, China;Key Laboratory for Health Monitoring and Control of Large Structures of Hebei Province, Shijiazhuang 050043, Hebei, China)
出处
《筑路机械与施工机械化》
2019年第8期116-120,共5页
Road Machinery & Construction Mechanization
基金
河北省自然科学基金项目(A2015210089)
河北省高等学校科学技术研究重点项目(ZD2015101)
石家庄铁道大学研究生创新资助项目
关键词
V级围岩
小净距
公路隧道
单侧壁导坑法
V-class surrounding rock
small spacing
highway tunnel
side-drift method
