Experimental Research & Theoretical Analysis On Resistance To Shearing Of Core Concrete Of Prestressed Concrete Pipe Pile

Prestressed concrete pipe has been used widely in building, highway, railway and port projects since the seventies of the twentieth century, due to good pile quality, high capacity to bear weight, nice adaptability to all kinds of condition, rapidness and good quality to construction. The end of prestressed concrete pipe pile is joined with base slab through the core concrete. The capacity of shearing of common prestressed concrete pipe pile is relative poor in horizontal earthquake action, which limit the range of use of prestressed concrete pipe pile.The two specimens of common prestressed concrete pipe pile and the one with core concrete were tested to investigate their shear capacity as well as ductility capacity. Based on the test, the theoretical analysis were carried out on the influences of core concrete to pile end.Based on the experimental studies and theoretical analyses, the shear capacity of design method of core concrete was provided for practical application in this paper. All these had made up for the up-to-date design method of prestressed concrete pipe pile and supported the technical reference to perfect standard design of prestressed concrete pipe pile.