Experimental study of seismic behavior of prestressed pipe pile

In order to study the seismic performance of prestressed concrete pipe pile, the tests on pile-soil-structure model under different seismic waves on the shaking table are carried out to study the distribution of stress, strain, bending moment and displacements along the pipe pile. The position of maximum bending moment and the force and failure characteristics of the pile and the pile cap are also studied, so that the reaction rules and characteristics of the pipe pile under earthquake are obtained. Finally, some conclusions are drawn as follows. The maximum bending moment of the pipe pile is located at the distance of 5-6 times the pile diameter to the top of the pile under El-centro wave of LWD wave and sine wave conditions. The acceleration response of the pile-superstructure system is rendered in height K-type distribution, etc.