摘要
地铁隧道是城市交通系统的重要组成部分,在活动断层密集地区建设隧道时,往往难以避免穿越断层,地震断层错动会对跨断层隧道造成严重影响。为了研究太原地铁1号线金阳路站~小井峪站区间段明挖矩形隧道在交城断裂带序列性多个正断层错动作用下的结构破坏机理、设防范围及设防效果,采用有限元分析软件,建立了地层-隧道相互作用数值模型,对比分析了序列性断层同时错动与单独错动时的隧道内力及损伤分布,明确了隧道受断层错动的影响区范围,研究结果对跨活动断层明挖地铁隧道抗错动设计与施工提供了参考。
Subway tunnels are an important component of urban transportation systems.When constructing tunnels in areas with dense active faults,it is often difficult to avoid crossing these faults.Seismic fault movements can have a significant impact on tunnels crossing fault zones.In order to study the structural failure mechanisms,protective measures,and their effectiveness for the cut-and-cover rectangular tunnels between Jinyang Road Station and Xiaojingyu Station on Taiyuan Metro Line 1 under the sequential movement of multiple normal faults in the Jiaocheng fault zone,a numerical model of the interaction between the strata and the tunnel was established using finite element analysis software.A comparative analysis was conducted on the internal forces and damage distribution within the tunnel under sequential fault movements and individual fault movements,defining the range of tunnel influence due to fault movements.The research findings provide reference for the anti-movement design and construction of cut-and-cover subway tunnels crossing active faults.
作者
余浩
YU Hao(China Railway 12th Bureau Group Second Engineering Co.Ltd.,Taiyuan Shanxi 030032,China)
出处
《铁道建筑技术》
2024年第1期129-133,共5页
Railway Construction Technology
基金
山西省住房和城乡建设厅科学技术计划项目(JJKJ2023005)。
关键词
地铁隧道
矩形隧道
断层错动
破坏机理
变形缝
subway tunnel
rectangular tunnel
fault movement
failure mechanism
deformation joint
