砂土中桩筏基础承载力的模型试验研究  

Model Experiment on the Bearing Capacity of Pile-Raft Foundation in Sandy Soil

作　　者：李九宏[1] 宋荣方[1] 

机构地区：[1]中州大学工程技术学院,郑州450044

出　　处：《中州大学学报》2014年第1期106-109,共4页Journal of Zhongzhou University

基　　金：河南省教育厅科学技术研究重点项目(14B560035)

摘　　要：本文设计一个试验模型来研究桩筏基础的承载力,对桩身轴力和桩顶反力、桩侧摩阻力、桩筏基础的沉降和承载力进行了细致的研究。试验结果表明:桩顶反力中心桩最小、边桩稍大、角桩最大;桩侧摩阻力的强化效应和退化效应同时存在;群桩基础的承载力一般由沉降控制。A model experiment was designed to study the beating capacity of pile - raft foundation in this paper. The axial force and top counter force of pile, side friction force, the settlement and beating capacity of pile - raft foundation were studied. It was observed that A single pile＇ s axial force lie on its position in the pile group, and it follows the rule of center pile is smallest, border pile is slightly larger, the comer pile is the biggest. The strengthen effect and degradation effect of lateral friction along piles still exist. The beating capacity of pile - raft foundation is dependent on the settlement.

关 键 词：桩筏基础 模型试验 共同作用 承载力 

分 类 号：TU473.1[建筑科学—结构工程]