快速轨道交通工程深基坑开挖监测及数值模拟分析

Deep Foundation Pit Excavation Monitoring and Numerical Simulation Analysis of the Rapid Rail Transit Project

旗峰公园站为广东东莞市城市快速轨道交通R2线的换乘站,处于东莞市旗峰路和东莞大道交叉路口,地处繁华地带,周边有重要建筑物,管线密集,施工风险高。为确保施工安全,进一步改进施工工艺,对施工全过程进行监测;同时利用数值模拟技术模拟深基坑支护的动态过程,并与监测结果进行比较,从不同角度对深基坑的开挖支护进行稳定性评判。结果表明,理论分析和实际监测结果较吻合,为本工程的顺利实施提供了依据。

The station of Qifeng Park is an interchange station of Dongguan＇ s rapid rail transit R2 Route, and it is located at the intersection of Qifeng Road and Dongguan Dongguan Avenue. It is a downtown area with intensive pipelines, surrounded with important buildings, and hence it has high risk of construction. To ensure construction safety, the construction technology is improved, and the monitoring of the whole construction process is carried out. The technology of numerical simulation is employed to simulate the dynamic process of deep foundation pit support, and it is compared with the monitoring results, so that the stability evaluation of the excavation support of deep foundation pit is done from different perspectives. The results show that the theoretical analysis and the actual monitoring results comparatively fit with each other, and it provides evidence for the construction of this project.