【摘要】 为了研究PHC管桩承台的抗震性能,对四个不同改进措施的PHC管桩承台试件进行低周往复加载试验。分析了各试件的滞回性能、承载能力、位移、延性及耗能能力。研究结果表明,将桩身混凝土掺入钢纤维可显著提高PHC管桩的抗震性能;而桩身缠绕碳纤维布和桩身加非预应力筋的改进方式对提高PHC管桩的抗震性能影响不大。更多还原

【Abstract】 In order to study the seismic performance of PHC pile caps,the low cycle reciprocating loading tests are carried out on four specimens of PHC pile caps using different improvement measures. The hysteretic behavior, loading capacity, displacement, ductility and energy dissipation of these specimens are analyzed. The results show that the pile body concrete with steel fiber can significantly improve the seismic behavior of the PHC pile caps, but the pile body wrapped CFRP and the pile body concrete with non-prestressed reinforcement have little effect to improve the seismic performance of PHC pile caps.更多还原