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| Seismic Performance Test Study and Numerical Simulation of PHC Pipe Pile |
| DI Hao |
| (China Railway Design Corporation, Tianjin 300142, China) |
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Abstract Abstract：Research purposes： In order to study the aseismic behavior of PHC pipe pile under low cycle reciprocating load at lateral pile, numerical simulation and nonlinear analysis based on the test conditions were carried out and the standard specimen of the piles is designed on the basis of domestic relevant specification. Then the low cycle reciprocating load test is carried out and the ductility and energy dissipation capacity of the piles were evaluated. Further the force state and failure mechanism of the piles under imitation seismic action were analyzed. Then the fundamental reasons of the lack of energy dissipation capacity of PHC pipe pile were found. Research conclusions： (1)PHC pile is short of ductility and energy dissipation. The specimen had brittle failure because the prestressed reinforcement tensile ruptured and the pile cracks did not fully developed. (2)The main reasons of the lack of energy dissipation is that brittle failure of prestressed steel bar limits the development of high strength concrete cracks which inhibits its high pressure bearing capacity. (3)The configuration of non-prestressed reinforcement is suggested to improve PHC piles’ aseismic performance, so as to enhance its application in the structural foundation field of high intensity earthquake area.
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Received: 15 September 2017
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2017, Vol. 34 
