文档介绍：基坑围护结构稳定性研究摘要随着我国大规模建筑基坑和地下工程的发展,许多由基坑围护结构稳定性导致的问题逐步凸现出来。然而,由于渗流场的复杂性,目前基坑支护工程中对基坑围护稳定性的影响因素考虑大多不合理。因此,研究基坑工程的围护结构稳定性的影响因素的土体变形分析方法,具有重要的理论意义和实践意义。针对上述情况,在总结前人研究成果的基础上,根据深基坑开挖特点,通过使用迈达斯软件建立了有限元计算模型,对深基坑围护结构稳定性及周围土体变形的影响因素等问题进行了数值模拟研究,重点对影响基坑围护稳定性的各因素进行了有限元数值模拟分析。以佛山环球国际广场基坑工程为例进行了基坑围护稳定性因素进行研究。分别分析基坑开挖步距、土体内摩擦角、基坑支护等相关因素对于基坑围护稳定性的影响。并通过以上研究,揭示深基坑围护变形的影响因素及规律,以期给工程实践以理论指导, 使工程设计人员对基坑围护结构稳定性有更进一步的认识,从而更好地改善施工作业条件,保证工程的安全性。关键词: 深基坑支护有限元法分析围护结构稳定性 Abstract With China's massive construction pit and underground development projects, many of the problems caused by the stability of the foundation pit gradually exposed. However, due to plexity of the flow field, the current excavation project in the stability of the foundation pitof the factors considered most unreasonable. Therefore, the study excavation of the factors affecting the stability of retaining the soil deformation analysis has important theoretical and practical significance. For the above, the summary results of previous studies based on the characteristics of deep excavation, using Midas software to build a finite element model of deep foundation pit stability and deformation of the surrounding soil factors issues such as numerical simulations, focusing on the impact on the stability of the foundation pitof the factors that FEM analysis. Of Foshan International Plaza excavation as an example of the foundation pit to study the stability factor. Step away from the excavation were analyzed, the soil friction angle of the body, excavation and other related factors affecting the stability of the foundation pit. And the above study reveals the impact of deep foundation pit deformation factors and the law in order to give theoretical guidance to engineering practice, so that engineers have a better stability of the foundation pitof knowledge, so as to better improve the construction work conditions to guarantee the safety of the project. Keywords: deep excavation Finite Element Analysis Retaining structure The stabil