文献类型：期刊文献

中文题名：基于有效应力法的单桩负摩阻力计算

英文题名：Calculation of negative skin friction of pile based on effective stress method

作者：马露[1];王钰轲[2];于敏[1];王伟[3,4];徐晓阳[1]

机构：[1]安徽科技学院建筑学院;[2]郑州大学水利与环境学院;[3]新加坡国立大学土木与环境工程系;[4]绍兴文理学院土木工程系

年份：2017

卷号：44

期号：1

起止页码：71

中文期刊名：水文地质工程地质

外文期刊名：Hydrogeology & Engineering Geology

收录：CSTPCD、、北大核心2014、CSCD_E2017_2018、北大核心、CSCD

基金：安徽高校自然科学研究重点项目资助(KJ2016A181);安徽科技学院高层次人才科研启动项目资助(ZRC2014464;ZRC2014465);国家留学基金资助项目(201607910002);浙江省自然科学基金项目资助(Y17E080066);住房和城乡建设部科学技术项目(2015-k4-003;2016-k5-008)

语种：中文

中文关键词：桩基础;负摩阻力;有效应力法;桩土相互作用

外文关键词：pile foundation; negative skin friction; effective stress method; pile-soil interaction

中文摘要：负摩阻力问题广泛存在于新建填土地区的桩基工程中,对桩基础承载特性产生较大的影响。基于有效应力法和桩侧摩阻力发挥机理,建立单桩负摩阻力计算的分段模型;通过桩土体系的变形假设和静力学平衡方程,确定桩侧摩阻力分段区间及中性点位置;利用位移和桩截面轴力控制方程,推导分段区间内桩身位移及轴力解析解。验证结果表明:桩侧负摩阻力的传递特征及分布范围可以通过计算公式确定。

外文摘要：Negative skin friction problems of the pile foundation engineering widely exist in the new fill area. A thorough study of the calculation methods are of important practical significance. The piecewise calculation model of negative skin friction is established based on the effective stress method and pile skin friction occurring mechanism. According to the deformation assumption and the static equilibrium equation of the pilesoil system, pile side friction of piecewise interval and neutral point position are determined. The displacement and pile axial force control equation are used to derive a piecewise interval pile displacement and axial force of the analytical solution. Based on the engineering example, the rationality of the results is verified. The results show that the method can accurately describe the transmission characteristics and distribution range of negative skin friction, and the calculation parameters are easy to obtain. The results are of significant reference significance in the practical engineering.