密肋复合墙结构筏板基础基底反力实测分析研究  

Experimental study on subgrade reaction force of raft foundation of multi-ribbed composite wall structure

作　　者：张荫[1] 袁洋[1] 方运泽 贺菁[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《建筑结构》2016年第8期83-87,共5页Building Structure

基　　金：国家自然科学基金项目(51178385)

摘　　要：为了研究密肋复合墙结构筏板基础基底反力的分布规律,对基底反力进行了现场原位测试。在现场测试数据的基础上,绘制出各轴线的基底反力分布曲线,得到密肋复合墙结构筏板基础基底反力的分布规律以及影响基底反力分布的因素。分析结果表明:密肋复合墙结构筏板基础基底反力的分布与地基土的组成构造、基础的横纵刚度及上部结构与地基基础的共同作用有关,在纵向轴线上基底反力实测曲线不呈现规律性的马鞍形或凹抛物线形分布,在横向轴线上基底反力实测曲线则呈现明显的马鞍形分布。In order to study distribution law of subgrade reaction force of raft foundation of multi-ribbed composite wall,in-situ test was carried out on subgrade reaction force. Based on the field test data,distribution curves of subgrade reaction forces along each axis were drawn,and distribution law and influencing factors of subgrade reaction force distribution were obtained for raft foundation of multi-ribbed composite wall. The results show that the distribution of subgrade reaction force of raft foundation of multi-ribbed composite wall is related to structure of soil composition,horizontal and vertical stiffness of foundation and interaction of superstructure and ground foundation. Field measured curve of subgrade reaction force in the vertical axis doesn＇t show regular saddle or concave parabola distribution,and field measured curve of subgrade reaction force in the horizontal axis features obvious saddle distribution.

关 键 词：密肋复合墙结构 筏板基础 基底反力 原位测试 

分 类 号：TU471[建筑科学—结构工程]