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该文结合某双圆形锚碇工程实例,采用非线性有限元分析方法模拟整个基坑的开挖支护过程,对双圆形超深基坑支护结构受力特性及地层变形进行研究。结果表明:双圆形超深基坑具有明显的空间效应和拱效应,大圆结构受力对地连墙设计起控制作用。
In this paper, a double circular anchorage project is used to simulate the excavation and support process of the whole excavation by using the nonlinear finite element method. The stress characteristics and deformation of the double circular ultra deep foundation pit supporting structure are studied. The results show that the double circular ultra deep foundation pit has obvious space effect and arch effect.