基于综合刚度原理水平承载桩计算的改进方法  

Improved Method for Calculating Laterally Loaded Pile Based on Composite Stiffness Principle

作　　者：汪宏[1] 曹骞[1] 

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《港工技术》2008年第6期20-24,共5页Port Engineering Technology

基　　金：江苏省教委自然科研基金课题项目(2KJD560001)

摘　　要：目前应用的综合刚度原理双参数法所推导的公式,深度幂次数的取值范围受限,且与实际不符,加之对桩的计算没有结合实际进行分段,而是对整个桩取统一参数,造成桩的下半段计算误差较大。基于综合刚度原理,提出水平承载桩计算的改进方法,即先对桩的求解表达式中深度幂次数进行修正,推导微分方程的解,并进行实例计算;然后对桩进行分界点确定,运用反力积分法对桩的后半段进行计算。实例计算结果的对比表明,用该方法不仅拓宽参数的取值范围,而且桩的后半段计算精度有较大提高。The formula derivated by biparameter method under composite stiffness principle is not tally with the actual situation due to the limitation of value selection of depth power. Further more the unified parameter are adopted for the pile calculation that cause the larger error for the lower part. A improved method for the calculating lateral loaded pile based on composite stiffness principle is put forward. First, the power of depth of the solution formula of biparameter method under composite stiffness principle currently is revised and solution of differential equation is deduced and many examples are computed. Secondly, laterally loaded pile is divided and the lower part of it is calculated by means of reaction integration method. By contrast, actual examples prove that the method in the paper not only widen the scope of parameter but also improve the calculating accuracy of lower part of the pile.

关 键 词：综合刚度原理 双参数法 幂次数 反力积分法 

分 类 号：TU318.1[建筑科学—结构工程] TU473.11