某基坑开挖变形规律的数值模拟分析

Numerical Simulation Analysis of Excavation Deformation of A Foundation Pit

依托珠海某大型基坑工程,采用三维数值模拟手段,分析岩土体和支护结构在基坑开挖过程中的变形演化规律,并对开挖过程中的基坑稳定性进行分析评价。结果表明,在开挖过程中基坑可以保证整体稳定性,此外,揭示了缓坡和被动加固对改善基坑变形和支护结构受力的显著效果,因此,数值模拟结果可用于指导基坑工程的安全施工。

Relying on a large-scale foundation pit project in Zhuhai,the three-dimensional numerical simulation method is used to analyze the deformation evolution of the surrounding soil and supporting structure during excavation,and the stability of fbimdation pit during excavation is analyzed and evaluated.The results show that the stability of the foundation pit can be guaranteed during the excavation process.In addition,the results reveal that the gentle slope and passive reinforcement can significantly improve the deformation of the foundation pit and the stress of the supporting structure.Therefore,the numerical simulation results can be used to guide the safe construction of the foundation pit.