预应力高强混凝土管桩抗震性能试验研究

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EXPERIMENTAL RESEARCH ON ASEISMIC BEHAVIOR OF PRESTRESSED HIGH STRENGTH CONCRETE PIPE PILES

1.
1. School of Civil Engineering,Hebei University of Technology,Tianjin 300401,China;
2.
2. Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401,China

摘要: 通过对4根预应力高强混凝土(PHC)管桩进行低周往复荷载作用下的抗震性能试验研究，分析在桩身填芯、配置非预应力钢筋等措施对管桩的破坏形态、滞回性能、骨架曲线、延性性能以及刚度退化的影响。研究表明：桩身填芯可以改善管桩的变形能力；在管桩中配置一定数量的非预应力钢筋能够显著提高管桩的极限承载能力，对改善管桩的滞回性能、延性性能以及耗能能力效果更为显著。
- 预应力高强混凝土管桩 /
- 填芯 /
- 非预应力钢筋 /
- 抗震性能 /
- 延性
Abstract: Four PHC pipe piles were tested on a seismic performance under low cyclic loading.The influence of pile core and configurating non-prestressed reinforcement on the failure characteristic, hysteretic performance, skeleton curve, ductility performance, and rigidity degradation of pipe piles were analyzed.The results indicated that the deformation capacity of pipe piles could be improved by pile core;the hysteretic performance, ductility performance and energy dissipation capacity of pipe piles could be improved more effectively by configurating some non-prestressed reinforcement.
- PHC pipe piles /
- pile core /
- non-prestressed reinforcement /
- aseismic behavior /
- ductility