深厚泥炭质土圆形基坑中h型双环板撑支护应用及数值模拟分析

Application and Numerical Simulation Analysis of H-Type Double Ring Plate Support in Deep Peat Soil Circular Foundation Pit

文章以深厚泥炭土超大圆形深基坑支护工程中某支护剖面为例,利用有限元软件midas GTS NX对h型双环板撑支护结构进行平面模拟,得出h型双环板撑支护结构在基坑剖面中的受力变形情况。通过对模拟结果的研究,分析出支护结构各构件及整体的受力作用机理,进而得出h型双环板撑支护结构中各构件相互配合,在基坑支护剖面中形成一个受力更加科学、刚度更大的支护体系。文章研究成果为h型双环板撑支护结构在深厚泥炭质土圆形深基坑中的应用提供了参考依据。

In this paper,a supporting section of a super-large circular deep foundation pit with deep peat soil is taken as an example,the finite element software midas GTS NX was used to simulate the h type double ring plate support structure,the stress deformation of h type double ring plate bracing structure in the profile of foundation pit is obtained.Through the study of the simulation results,the mechanism of force acting on each member and the whole of the supporting structure is obtained,furthermore,it is concluded that the components of the h type double-ring plate support structure cooperate with each other,and a support system with more scientific force and greater rigidity is formed in the foundation pit support section.The research results of this paper provide a reference for the application of h-type double ring brace in deep peat soil deep foundation pit.