水平循环荷载作用下桩基p-y曲线模型研究进展

The review of p-y curve model for lateral cyclic loaded pile

p-y曲线法常用于水平静力受荷桩的分析,但海洋工程中的桩基除静力外还承受波、流等循环荷载作用,将静力p-y曲线直接用于循环荷载下桩基的设计研究时,往往会产生误差本文梳理了水平循环荷载作用下p-y曲线模型的研究成果,按照得到循环p-y曲线的不同方式,将其分为总体调整法和参数修正法。在参数修正法中,根据修正时考虑的因素不同,分为考虑荷载特性的修正和考虑桩土相互作用的修正。最后通过对循环荷载作用下p-y曲线研究现状的总结对比,评价了不同方法的特点,讨论了当前研究存在的问题并给出了建议.

P-y curve method is often applied to analysis of piles subjected to lateral monotonic loads,but the piles in ocean engineering also bear the lateral cyclic loads induced by wave and current, and errors often occur when monotonic p-y curve was directly used for the design and research of cyclic loaded piles. In this paper, the current research progress of cyclic p-y curve model is introduced. According to the different ways of obtaining cyclic p-y curve, the method is classified into overall adjustment method and parameter modification method. In parameter modification method, according to the different factors considered in the process, it can be subdivided into correcting by cyclic load characteristics and pile-soil interaction. At last,based on summary and comparison, the characteristics of different methods are discussed,then problems and suggestions of existing researches are put forward.