摘要
某城市轨道交通三号线喇叭口过渡段隧道位于左线与联络线交叉处,隧道断面大,断面变化点多,且隧道顶部离30#楼桩基很近。为了减少暗挖施工对地层的扰动和控制地表沉降,采用合理的工法施工显得很有必要。针对区间喇叭口隧道特点,提出用眼镜工法和辅助工法施工,并采用弹塑性有限单元法对工法按施工步进行分步模拟计算,为施工、设计提供依据。
The transitional trumpet-like tunnel in Line No.3 of Rail Transit System of a given city lies at the intersection between the left line and the connection line. The cross section of the tunnel is large and has many variation points, and the top of the tunnel is close to the pile foundation of Building No.30. In order to reduce the disturbance induced by the embedded excavation on stratum and control the ground settlement, it is necessary to adopt reasonable execution techniques. Based on characteristics of the trumpet-like tunnel, spectacle and auxiliary techniques are proposed, and the elastoplastic finite element method is used to simulate the process in the construction sequences.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第15期2528-2533,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
隧道工程
地铁
喇叭口隧道
眼镜工法
数值模拟
Computer simulation
Finite element method
Intersections
Pile foundations
Subways
