对侧向受荷桩有限差分解法的改进研究  

Research on Improvement of Finite Difference Method for Laterally Loaded Piles

作　　者：尤汉强[1] 杨敏[1] 孙庆[1] 

机构地区：[1]同济大学地下建筑与工程系,岩土及地下结构教育部重点实验室,上海200092

出　　处：《结构工程师》2009年第4期114-118,共5页Structural Engineers

摘　　要：在海洋桩基设计中,水平荷载为主要控制荷载。p-y曲线法因其能考虑土体非线性和大变形特性,成为海洋工程中分析侧向受荷桩的主要方法。朱碧堂基于W.D.GUO提出的统一极限抗力分布,提出了一种计算侧向受荷桩的有限差分求解方法。但是,该方法计算过程繁琐,计算参数较多,方程形式复杂,不便于编制计算机程序。同样是基于W.D.GUO提出的统一极限抗力分布,对朱碧堂方法做了一定的改进,提出了一种计算更方便,效率更高的方法,并编制了计算程序。通过用两种方法对某一算例进行计算对比,表明该方法是切实可行的。During the design of pile foundation for offshore structures, the horizontal load is the control load. The p -y curve method with the advantage which the non-linear and large deformation of the soil can be taken into account, becomes the main method in the analysis of laterally loaded piles. Based on a limiting force profile which was presented by W. D. GUO, Zhu Bitang proposed a Finite Difference Method for analyzing the laterally loaded piles. However, the calculation process and the formulas are so complicated as well as there are so many parameters, that it is inconvenience for programming. In this paper, the method proposed by Zhu Bitang was improved. And further, a more convenient and efficient method was obtained and implemented into a program. By comparing the calculated results of the two different methods, it was found that the given method is practicable.

关 键 词：P-Y曲线法 极限抗力 侧向受荷桩 有限差分法 

分 类 号：TU473.1[建筑科学—结构工程] U448.22[建筑科学—土工工程]