邻近地铁出入口深基坑支护方案的研究及优化

Optimization of Deep Foundation Excavation Supporting Scheme Close to the Metro Station Entrance

以西安地区某邻近地铁出入口深基坑工程为例,运用数值分析软件,结合实际场地的水文地质和工程地质条件,建立三维数值模型,进行施工过程的动态模拟与地铁出入口安全评价。研究结果表明,对原有的支护方案优化后,满足既有地铁出入口变形控制要求,且符合了规范对支护形式提出的限制。

Taking a deep foundation pit supporting project in Xi＇an as an example,based on the hydrogeological and engineering geological conditions,a three-dimensional numerical model was established and the construction process and safety evaluation were evaluated by the model.The results are： this optimization supporting scheme can meet the requirements of the deformation control of the metro station entrance and the restrictions of technical code.