摘要
针对湖南一高速公路偏压双连拱隧道进口段埋深浅、地质条件复杂以及隧道结构受力复杂等情况,对隧道典型断面的拱顶下沉量、中墙顶部位移和收敛位移进行现场监控量测,结合隧道开挖情况和工程地质条件分析其发展规律和产生原因,给设计和施工反馈围岩变形信息,指导现场施工。同时,对隧道的施工全过程进行有限元仿真模拟分析,把有限元计算结果与现场监测数据进行比较,结果表明二者反映围岩位移的变化规律是一致的,能够动态地指导偏压双连拱隧道全过程施工,确保施工安全。
The double-arched highway tunnel was constructed with unsymmetrical pressure, complex geological condition of shallow depth zone in Hunan Province. In order to guarantee the safety of tunnel construction, in-situ monitoring was carried out at the section of tunnel. Based on the field measurements, the deformation of surrounding rocks was analyzed, and the process of construction was simulated by finite element method（FEM）. According to the comparisons of numerical results with field measurements, the proposed numerical procedure was found to be an effective approach for predicting the deformation of surrounding rocks; and the achieved results can provide important guidance to tunnel construction. The example shows that the finite element simulation analysis is useful to the construction of unsymmetrical pressure double-arched highway tunnel.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第8期1723-1727,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(50104013)
湖南省教育厅资助项目(03C509)
关键词
隧道工程
有限元模拟
偏压双连拱隧道
现场监测
tunnelling engineering
finite element simulation
unsymmetrical pressure double-arched highway tunnel
in-situ monitoring
