粘土中水平受荷桩基计算方法

对黏土中实测p-y(水平抗力-水平位移)曲线方法进行总结和计算,认为该方法对于试验桩基和弯矩拟合函数的依赖性强,且形式复杂,普适性差.选用简单的理想弹塑性p-y曲线模型,并采用m值和统一极限抗力作为模型参数,对黏土中的水平受荷桩进行分析.与Matlock实测p-y曲线模型进行对比分析,证明理想弹塑性模型适用于不同直径桩基,尤其是大直径桩的计算.通过实例对比分析,证明了该模型适用于不同土性的黏土场地中桩基的计算.

Calculation of Laterally Loaded Piles in Clay

Summary and calculation on measured clay p-y curve methods indicated that the methods were dependent on test piles and moment fitting functions,and too complexly formed to apply universally.To overcome these shortcomings,the elastic-plastic p-y curve model was adopted,with m and the unified ultimate resistance as model parameters,to analyze the laterally loaded piles in clay.Comparative analysis with Matlock measured p-y curves proved that the elastic-plastic model was applicable for piles with different diameters,in particular for large diameter piles;comparative analysis with measured examples proved that,the model was suitable for calculation of the piles in different soil sites.The elastic-plastic method proves to be simple and able to be widely used instead of the complexly measured p-y curves in engineering.