高低层复杂高层建筑厚筏基础反力及变形试验研究  

Experimental study on contact pressure and deformation of thick raft foundation under tall and low building

作　　者：刘朋辉[1] 

机构地区：[1]中国建筑科学研究院地基基础研究所,北京100013

出　　处：《岩石力学与工程学报》2017年第A01期3618-3626,共9页Chinese Journal of Rock Mechanics and Engineering

基　　金：北京市自然科学基金项目(8164074);中国建筑科学研究院院青年基金项目(20151602331030063)~~

摘　　要：基于上部结构、基础与地基共同工作的理论,通过高低层复杂高层建筑大型模型试验,找出不同高层和低层在结构刚度和荷载差异下基础沉降、深层土变形和基底反力分布规律及它们之间的相互影响,进一步明确复杂高层建筑的变形控制条件。试验结果表明:单体之间的基础反力和基础沉降的影响范围在3跨以内;高层建筑地基主要压缩层厚度为基础宽度的0.6倍;高层基础整体挠度主要由其本身的刚度和荷载决定;高层两侧差异荷载增加将引起高层本身倾斜线性增长,变形控制中应重点考虑差异荷载对高层倾斜的影响。Based on the structure-foundation-soil interaction, the model experiment is used to study the tall and low building with thick raft foundation. The distribution regularities of foundation settlement, the compression settlement of soil mass, contact pressure, interaction of tall and low building and deformation control are summarized. The test result shows that the maximal value of the interaction regions for the tall building and low building is 3 spans, the major thickness of compressed layer for the tall building is 0.6 times foundation width, the integral flexure of the tall building is decided by it＇s structural rigidity and load, the inclination of the tall building increase with the increase of the differential load. So the inclination may be the important deformation control for the complex high-rise building.

关 键 词：基础工程 高低层复杂高层建筑 共同工作 厚筏基础 基底反力 变形控制 

分 类 号：TU443[建筑科学—岩土工程]