关键词: 预应力管桩, 振动台试验, 时程分析, 数值模拟, ABAQUS软件

Abstract: In order to research seismic performance of prestressed pipe pile under earthquake, and increase the level of ductility design of the prestressed pipe pile, the vibration characteristics of the pile foundation are grasped through the prestressed pipe pile shaking table test. This paper establishes the prestressed pipe pile numerical model of vibration analysis and simulates the whole process of the vibration test. On this basis, by changing the pile number and entering different seismic wave acceleration peaks, the reactions under the earthquake and seismic performance of the various pile foundation forms are explored. The results show that for four piles foundation, in the pile location of the three times diameter appears pile body reverse displacement; in the 2.5 times diameter of the pile appears pile body negative bending moment; within the region of four times to nine times appears cracking bending moment; in the position of the five times pile diameter appears the maximum bending moment; and under the location of fifteen times the pile diameter the pile body bending momeat decreases rapidly. The results provide a reliable basis for seismic design, manufacturing, construction of the prestressed pipe piles.

Key words: prestressed pipe pile, shaking table test, time history analysis, numerical simulation, ABAQUS software