Experimental And Simulation Analysis On Shear Bearing Capacity Of PHC Pipe Pile

In recent years,PHC pipe pile has played an important role in large-scale foundation engineering and has been popularized.China has become one of the most widely used and largest production scale of PHC pipe pile.But because China’s existing pile foundation seismic data are not complete,the code is not explicitly given PHC pile seismic design method and structural measures,combined with the understanding of the performance of pile is not deep enough,thus limiting the promotion and use of pipe pile in high intensity area.With the strength of concrete and reinforced steel bars have been rising,it can better meet the requirements of bearing capacity of the upper structure of the vertical bearing capacity of the pile,but the seismic data show that the pipe pile and pile cap in the connected position and the change of soft and hard layer due to shear bearing capacity is insufficient safety reserve of fracture,which requires us to further investigate the shear performance.In this paper,on the basis of previous studies,through indoor pile shear test and ABAQUS numerical simulation analysis,the influence of different reinforcement measures of pile cracking and ultimate shear,and introduces the pile bearing failure process and mechanism,the pile in different ways of strengthening the cracking and ultimate shear are different to raise the level of the test results and theoretical calculation results were compared and analyzed,the main reason for the stress caused by the pile bearing capacity and failure form of differences and put forward reasonable measures to strengthen the construction of.The test process was simulated by using ABAQUS software,to study the effect of these factors on the anti shear properties and fracture morphology of the on the basis of the change of pile body pasted carbon cloth layer and change the direction and the pipe pile body stirrups arrangement,provide a reference for the construction and revision of the atlas of pile foundation engineering.