基桩抗压刚度的计算方法  

Calculating Method of Compressive Stiffness of Foundation Pile

作　　者：陈波[1] 

机构地区：[1]兰州交通大学土木工程学院,730070

出　　处：《建筑结构》2005年第3期74-75,共2页Building Structure

摘　　要：考虑变截面桩的弹性压缩变形、桩周土和桩端土特性,提出了桩长和桩端土阻力对桩端位移的影响 系数,利用变分原理推导出了基桩抗压刚度计算公式,计算值与工程实例测试值吻合较好。Considering the elastic compressive deformation of foundation pile with changes in cross section,the characteristics of soil around pile and soil resistance at pile tip,influencing coefficient of compressive stiffness is put forward with respect to pile length and pile tip resistance.The calculation formula of compressive stiffness is derived by using the variational principle.The calculation results agree with the test results in practice.

关 键 词：抗压刚度 基桩 桩端 变截面桩 弹性压缩 桩周土 桩长 工程实例 位移 变形 

分 类 号：TU473[建筑科学—结构工程] TU753.3[建筑科学—土工工程]