周边复杂环境下软土异形深基坑支护优化设计

Optimal design of soft soil irregular deep foundation pit support under complex surrounding

在周边环境复杂情况下,某软土异形深基坑利用三维数值模拟分析软件,对深基坑开挖工况进行模拟。通过模拟对支护方案进行比选,确定最佳方案,同时明确基坑开挖过程中支护体系的受力及位移情况,找到基坑的薄弱位置,优化设计,提高安全度。经施工监测表明,该方案既节省了工期,又节约了造价,围护结构布置也更加合理,安全度更高。

In the case of complex surrounding environment, a deep foundation pit in soft soil is simulated by three-dimensional numerical simulation analysis software. Through simulation of the support scheme, the optimum scheme is determined, the force and displacement of the supporting system in the excavation process are clearly defined, the weak position of the foundation pit is found, the design is optimized and the safety degree is improved. The construction monitoring shows that the scheme not only saves the construction period but also saves the cost. The layout of the retaining structure is more reasonable and the safety degree is higher. It provides a good reference for the future project.