Research On Bearing Capacity And Stability Of Slope Supporting Composite Structure With Framed Pre-Stressed Anchor Bar And Sheet Pile Wall

With the rapid development of the urban scale,urban land space is becoming tenser and tenser.With the scale and depth of foundation pit engineering expanding,Framed Pre-stressed Anchor Bar and Sheet pile Wall is widely used in the foundation pit engineering,because of their fast construction and low cost.Slope stability analysis are performed in practical geotechnical engineering using the finite element method,which is an advanced method and widely used by engineers.With the development of computer technology,it’s become easy to study the slope’s stability supported by frame prestressed anchor and sheet pile wall through the displacement-based finite element numerical analysis method,to calculate the safety factors.The specific research contents and conclusions are as follows:1.The expansion angle ψ? is not widely covered.In this study,PLAXIS2 D finite element method used to establish the slope model supported by frame prestressed anchor and sheet pile wall,and the influence of expansion angle on slope deformation is studied.2.The foundation pit supported by the prestressed anchor pile wall is taken,and the effect of soil parameters and anchor design parameters on the stability and horizontal displacement of the foundation pit is analyzed.The results showed that the soil parameters have great influence on the stability and horizontal displacement of the foundation pit,therefore,the reasonable calculation parameters should be chosen in the foundation pit support design process.3.This paper summarizes the calculation of the earth pressure on the side of the pile,first expounds the distribution of the earth pressure,and makes a detailed analysis of the static earth pressure,the active earth pressure,and the passive earth pressure acting on the supporting pile,and summarizes the calculation methods and formulas of the three.The characteristics of earth pressure acting on supporting structure are mainly analyzed on the soil layer,and calculate the error between calculation and measurement in different soil layers.