四联拱浅埋暗挖隧道施工监测与数值分析  

Numerical analysis and construction monitoring of four arch tunnel with shallow-buried excavation

作　　者：霍润科[1,2] 周锋[1] 伦培元[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：《西安建筑科技大学学报（自然科学版）》2013年第3期330-335,共6页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(41172237);陕西省教育厅专项基金(11JK0947)

摘　　要：以哈尔滨地铁四联拱隧道为依托,采用有限元数值模拟和现场监测数据分析相结合的方法,对地铁隧道围岩及支护结构的稳定性进行研究,发现隧道拱底、临时支护拱墙和拱脚处应力较为集中,且拱脚处的应力变化最大;竖向位移在拱顶和拱底部位变化较大,其最大值在掌子面附近;地表沉降最大值位于上下行线中心位置,向两边呈逐渐递减分布,且下行线地表沉降大于上行线;拱顶沉降和地表沉降符合一般沉降规律,并对其实测值与计算值的变化规律进行了对比分析.Based on the four arch tunnel of Harbin metro,and combining the methods of finite element numerical simulation and field monitoring data analysis,the paper has done some research on the stability of the tunnel surrounding rock and supporting structure,indicating that the stress of arch bottom,temporary support arch wall and arch feet is more concentrated and the greatest change of stress appears in the arch feet and the vertical displacement in the vault and arch bottom changes greatly and its maximum value is in the vicinity of the tunnel face.The maximum of surface subsidence is located on the center of the uplink and downlink and gradually decreasing distribution to both sides,and the surface subsidence of the downlink is greater than the uplink.However,the subsidence of vault and surface comply with the general law of settlement and their variation of the measured and calculated values were compared.

关 键 词：四联拱隧道 数值模拟 监测数据 地表沉降 

分 类 号：U451[建筑科学—桥梁与隧道工程]