The Application Of Occlusion Piles In Some Deep Foundation Pit Engineering And Its Analysis

Bored interlocking pile,as a form of support for deep foundation pit engineering,It has the advantages of large overall rigidity,good permeability,low cost and convenient construction operation.At the same time,it also has the advantages of bored piles,with good application prospect and application value.Currently in the domestic research on the mechanism of the drilling occlusive piles analysis is not perfect,and this requires a lot of practical engineering application and practice,and the application of occlusal pile in different soil layer for this paper.In this paper,theoretical analysis,numerical simulation and field monitoring are used to study the research methods.Considering the similarity between the surrounding structure and the underground continuous wall,the design method of the structure equivalent to the stiffness distribution of the underground continuous wall is studied.At Beijing’s tsinghua university biology lab building the engineering background of deep foundation pit engineering,through the use of FLAC3 D,The pile body horizontal displacement under different working conditions is obtained and the variation of soil settlement around the pile.Based on the measured data of the engineering field,the displacement variation law of the bite pile under different working conditions is compared and analyzed.The influence of the bite pile on the retaining effect of bite pile in different bite and quantity,concrete pile strength and bite pile diameter was studied.The optimal selection of three influencing factors is proposed.In this paper,the design method include design of the bite and equal stiffness section distribution of the Bored interlocking pile and other stiffness section are summarized,which can be used for reference in the design of similar deep foundation pit engineering.It is of practical value to study the deformation law of pile displacement and settlement of soil around pile under different working conditions.The deformation law of pile displacement and settlement of soil around pile under different working conditions is studied,the selection of bite and quantity,strength of concrete pile and the selection of pile diameter are of great significance.