基于有限元分析的圆形深基坑开挖变形数值分析  

Numerical analysis of excavation deformation of circular deep foundation pit based on finite element analysis

作　　者：康健军 KANG Jianjun(The Fourth Engineering Co.Ltd.,China Railway 18th Bureau Group,Tianjin 300000,China)

机构地区：[1]中铁十八局集团第四工程有限公司,天津300000

出　　处：《哈尔滨商业大学学报（自然科学版）》2023年第6期717-720,759,共5页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：为解决传统分析方法在对圆形深基坑开挖变形数值进行分析时,所得基坑水平方向和竖直方向上的变形量与实际测量结果相差较大问题,开展基于有限元的圆形深基坑开挖变形数值分析方法设计研究.通过圆形深基坑周围土体模型构建、圆形深基坑开挖接触面与支护结构模拟、圆形深基坑开挖过程模拟计算和基于有限元的开挖过程变形分析,提出一种全新的分析方法.通过实验进一步证明,新的方法与传统分析方法相比,结果更加接近实际测量结果,并且有效提高了准确性和精度,对于后续基坑支护具有十分重要的意义.In order to solve the problem when analyzed the numerical value of the excavation deformation of the circular deep foundation pit by the traditional analysis method,the analysis of the horizontal and vertical deformation of the foundation pit was quite different from the actual measurement results.The numerical analysis method of circular deep foundation pit excavation deformation based on finite element analysis was designed and studied.Through the construction of the soil model around the circular deep foundation pit,the simulation of the contact surface and supporting structure of the circular deep foundation pit,the simulation calculation of the circular deep foundation pit excavation process and the deformation analysis of the excavation process based on finite element analysis,a new analytical method was proposed.The experiment further proved that the new analysis method was closer to the actual measurement result than the traditional analysis method.Moreover,the accuracy and precision of numerical analysis were effectively improved,which have great value for the subsequent foundation pit support.

关 键 词：深基坑 开挖变形 有限元分析 数值分析 方法对比 

分 类 号：TU473.12[建筑科学—结构工程]