湖南大学学报（自然科学版）2012，Vol.39Issue(9)：18-22,5.
考虑桩土滑移的超长桩沉降非线性算法
Nonlinear Analysis of Settlement of Long Pile Considering Relative Slide between Pile and Soil
摘要
Abstract
A simplified approach was proposed to calculate the settlement of super-long pile subjected to vertical load. Firstly, a three-line model of load transferring was developed to simulate the transferring law of super-long pile considering the work hardening or work softening characteristics of the soil around the pile, and the theory of rz curve was also used to describe the nonlinear characteristics of the contact interface between pile and soil. Then, considering the relative slide, the pile and the soil were discret to establish units respectively, so the stiffness matrix equation and the method of iteration were also deduced according to the equilibrium conditions of the pile-soil system. Therefore, the method for the evaluation of the settlement of super-long pile considering the relative slide between pile and soil was proposed. Finally, the theoretical calculation was compared with the field test, and a good agreement has been obtained, which means that the calculation method can provide a reference to engineering practice.关键词
超长桩/荷载传递模型/相对滑移/刚度矩阵法/迭代法Key words
super-long pile/ load transfer model/ relative slide/ method of stiffness matrix/ iteration分类
交通工程引用本文复制引用
杨明辉,张小威,赵明华..考虑桩土滑移的超长桩沉降非线性算法[J].湖南大学学报（自然科学版）,2012,39(9):18-22,5.基金项目
国家自然科学基金资助项目(50708033) （50708033）
湖南省交通科技项目(200923,CXKJSF0108-2) （200923,CXKJSF0108-2）
湖南大学青年教师成长计划项目 （）
