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为了研究PHC(预应力高强混凝土)管桩的抗震性能,对6个添加非预应力筋、混凝土掺入1.0%钢丝端钩型钢纤维及进行填芯改善措施的PHC管桩试件进行了低周往复加载试验,对各试件的承载能力、位移、延性、耗能能力及累积损伤进行了分析,研究了不同改善措施对PHC管桩抗震性能的影响。结果表明:混凝土掺入1.0%钢丝端钩型钢纤维并加入非预应力筋或者进行填芯且加入非预应力筋的措施,可以明显提高试件的变形能力及延性,改善试件的滞回特性和耗能能力,提高了试件的抗震性能。
In order to study the seismic performance of PHC (prestressed high strength concrete) pipe piles, six low-cycle (low-cycle) low-cycle The reciprocating loading tests were carried out to analyze the bearing capacity, displacement, ductility, energy dissipation capacity and cumulative damage of each specimen, and the influence of different improvement measures on the seismic performance of PHC tubular piles was studied. The results show that the concrete incorporation of 1.0% steel wire hooked steel fibers and adding non-prestressed tendons or core-filling and adding non-prestressed tendons can significantly improve the deformation capacity and ductility of the specimens and improve the hysteretic characteristics of the specimens And energy consumption, improve the seismic performance of the specimen.