Study On The Influence Of The Slope Angle Of Plate On The Failure State Of The Soil Surrounding The Extended-plate Pile Under Horizontal Force

The concrete plates-expanded pile as a new type of pile,now more and more attention,it is from the cross-section concrete pouring pile development.Through the different positions in the pile set the bearing plate,so that the ordinary straight into a variable cross-section pile,while the pile of the force mechanism has also changed.It is characterized by a high bearing capacity,the advantages of small settlement deformation,so it has a good development prospects.At present,the research on the concrete plates-expanded pile has made a lot of achievements,but still in the initial stage of development,its vertical bearing performance research has been more accumulation,but in the horizontal load mechanism of the study is very Limited,because the horizontal bearing capacity of the pile has been more attention,so to a certain extent affected the excellent application of this excellent pile type.The concrete plates-expanded pile and ordinary straight pile is the biggest difference between the existence of bearing expansion disk,due to the installation of the bearing plate with flexible variability,such as the number of bearing capacity,bearing disk spacing,bearing plate diameter and Slope angle and so on,so the study of bearing plate parameters have practical significance.In order to better guide the engineering practice,In order to better guide the engineering practice,this paper will study the influence of the slope angle on the soil failure state of the expansive pile under the action of horizontal force by means of finite element simulation and undisturbed semi-surface pile test.In the aspect of software simulation,the analytical model of different bearing slope angle is established by ANSYS software.By analyzing the results of its simulation and displacement,and compare their results,we can analyze the influence of different bearing slope angle on pile displacement,soil damage and the more suitable angle design value.At the same time,in order to observe the damage of the soil around the pile,a small model test was carried out.During this period,the damage of the pile and the displacement value of the pile were carried out.After finishing the analysis,the software was compared with the software simulation part,finally determine the different bearing slope angle on the soil around the pile of damage and reasonable force slope angle,And the horizontal bearing capacity of the expansion pil es is analyzed according to the failure state of the soil.Through the study of this paper,we can qualitatively determine the pile-soil failure characteristics of the concrete plates-expanded pile under horizontal load,and the influence of the bearing slope angle on the horizontal load,and perfect the theoretical basis of the concrete plates-expanded pile,So it will help to further study the type of pile and in the future large-scale application in the actual project.