可控刚度桩筏基础负摩阻力数值分析  

Numerical analysis of negative friction resistance of piled raft foundation with controllable stiffness

作　　者：郭天祥 GUO Tianxiang(Xiamen U-Town Archtecture Design Institute Co.,Ltd,Xiamen 361012)

机构地区：[1]厦门上城建筑设计有限公司,福建厦门361012

出　　处：《福建建筑》2020年第12期121-126,共6页Fujian Architecture & Construction

摘　　要：采用ABAQUS有限元软件建立三维数值模型,对比分析了常规桩基和可控刚度桩筏基础的负摩阻力特性,并通过变刚度时间、桩间距以及桩径大小等不同工况,分析了负摩阻力对可控刚度桩筏基础的影响。研究结果认为:可控刚度桩筏基础桩身上部一定范围内处于负摩阻力状态,应引起注意。In this paper,the ABAQUS finite element method software was used to simulate a three-dimensional numerical model,compares and analyzes the negative friction characteristics of conventional pile foundation and controllable stiffness piled raft foundation,and analyzes the influence of negative friction characteristics through varying stiffness time,pile spacing and pile diameter.The results of the study sug-gest that the upper part of the controllable stiffness piled raft foundation pile is in a state of negative friction within a certain range,which should be paid attention to.

关 键 词：桩筏基础 可控刚度 负摩阻力 数值分析 

分 类 号：TU4[建筑科学—土工工程]