东莞某邻铁项目深基坑设计

Design of deep excavation of a neighboring subway project in Dongguan

工程位于东莞市万江区万道路旁,基坑开挖深度为5.40~14.25 m,开挖范围内的土为软弱土层,周边市政管线较多,环境条件复杂且毗邻轨道交通1号线。采用地下连续墙+两道钢筋砼支撑和咬合桩+两道钢筋砼支撑的支护形式,通过对支护结构计算分析以及整体有限元数值模拟分析,支护的受力、稳定、抗倾覆及变形指标均满足规范要求,可以确保基坑安全,从而保护周边建筑在施工过程中的安全。

The project is located next to Wan Road,Wanjiang District,Dongguan City.The excavation depth of the foundation pit is 5.40~14.25 m.The soil within the excavation range is weak soil layer,there are many municipal pipelines around,the environmental conditions are complex,and it is adjacent to rail transit Line 1.Using the support form of underground continuous wall+two reinforced concrete supports and occluding pile+two reinforced concrete supports,through the calculation and analysis of the support structure and the overall finite element numerical simulation analysis,the force,stability,anti-overturn and deformation indicators of the support meet the requirements of the code,which can ensure the safety of the foundation pit,so as to protect the safety of the surrounding buildings in the construction process.