澳门复杂地质水文条件下大型深基坑变形控制

Deformation Control of Large Deep Foundation Pit in Macao under Complex Geological and Hydrological Conditions

澳门妈阁交通枢纽建造工程平面最大开挖尺寸185.6m×74.82m,开挖深度为23.7m,垂直方向设7层工字钢支撑作为支护结构。项目周边环境复杂,对基坑稳定要求极高,项目通过采用PLAXIS软件计算方法进行基坑变形分析,结合工程特难点优化设计方案和施工工艺,加强过程管理及实施信息化监控,有效控制了基坑的变形,确保了深基坑的施工安全,可为今后类似工程提供借鉴。

The maximum excavation dimension of Macao Mage Transport Hub is 185.6m×74.82m,and the excavation depth is 23.7m.Seven I-shaped steel supports are installed in the vertical direction as the supporting structure.The surrounding environment of the project is complex,and the stability of the foimdation pit is highly demanded.The project uses PLAXIS software to analyze the deformation of the foundation pit,combines with the optimization design scheme and construction technology of the special difficulties of the project,strengthens the process management and implements information monitoring,effectively controls the deformation of the foundation pit,ensures the construction safety of the deep foundation pit,and provides a reference for similar projects in the future.