【摘要】 对于海上风力发电机等海上构筑物的桩基础,在地震或波浪荷载作用下,由于超孔隙水压力的产生,地基土对桩身的水平抗力降低,如果按照正常情况下的p-y曲线进行设计,结果偏危险,因此设计时常对p-y曲线进行折减。本文阐述了可液化土p-y曲线折减方法的研究进展,着重概括了可液化土p-y曲线孔压折减系数的研究方法与成果,并将不同学者的研究成果进行对比,分析了不同研究方法对所得结果的影响。针对国内外学者对该问题的研究存在的不足,本文提出了若干思考和展望,认为应用p-y曲线折减的方法研究可液化土-桩相互作用问题是可行的。更多还原

【Abstract】 To piles of offshore structures such as offshore wind turbines,a decrease in lateral resistance of foundation soil to piles happens when the system is influenced by the appearance of excess pore pressure owning to earthquake or wave load.Under that circumstance,the design may be dangerous if a normal pycurve is adopted.Therefore,a reduction on p-ycurves should be used in designing.Previous researches concerning this approach are summarized,analyzed and compared in this paper,with special emphasis on the research results of pore pressure reduction factor in liquefiable soil.Some discussions and perspectives are also drawn within this paper.Basically,it is reasonable and feasible to use such reduction methods in the studying of interactions between pile and liquefiable foundation soil.更多还原