浮式再气化平台锚定嵌岩桩内力分析

Internal force of restraining rock socketed pile of floating regasification unit

基于国外某浮式再气化平台锚定嵌岩桩设计,介绍水平分层钢管混凝土复合截面参数和刚度计算,描述往复荷载及岩质条件下的P-Y曲线绘制方法并采用ANSYS软件编制通用程序实现桩土相互作用的P-Y曲线仿真模拟。讨论不同地质模型、往复荷载和非往复荷载作用下桩的P-Y曲线、嵌岩深度、荷载作用高程以及岩石单轴抗压强度对锚桩内力的影响。研究成果可为浮式再气化平台锚定嵌岩桩设计与施工提供参考。

Based on the design of the restraining rock socketed pile of floating regasification unit,we provide an insight into various horizontal layered concrete-filled steel tube composite section parameters and stiffness calculation,introduce the recognized P-Y curves for the cyclic load type and rock,and establish simulation models for the P-Y curve using software ANSYS.Furthermore,we probe into the effects of the ground model,P-Y curves for the static and cyclic load type,rock socketed depth,lateral force application level,and uniaxial compressive strength of rock on the internal force of restraining rock socketed pile.The research results may serve as a reference basis for the design and execution of the restraining rock socketed pile of floating regasification unit.