侧向荷载作用下砂土与粘土中桩的受力性状研究

采用p-y曲线法对砂土与粘土中侧向受荷桩进行非线性分析。对于砂土与粘土采用不同的p-y曲线模型,并用m值和统一极限抗力作为模型参数。通过有限差分法与迭代方式进行计算,迭代过程中将土体变形分为弹性区与塑性区,建立全新的计算模型。利用Fortran语言编程,分别对粘土与砂土中侧向受荷桩的受力性状进行分析计算。将计算结果与实例进行对比分析,证明该模型适用于砂土与粘土中桩基的计算。

Study on stress property of clay and sand middle pile under effect of lateral load

The nonlinear analysis of lateral load pile in clay and sand was carried out by p-y curve method.It used different p-y curve model to sand and clay, took m value and uniform ultimate resistance as model parameters.The soil body''s deformation was distinguished as elastic zone and plastic zone during the iterative process through. finite difference method and iterative method,and a new computing model was established. Then it used fortran language to study the behavior of laterally loaded piles,and compared computation result with examples so as to prove that the model is suitable for the calculation between clay pile and sand one.