旋喷桩复合地基在卵石及软弱层的工程应用  

Engineering application on composite foundation of jet grouting pile in pebble and weak layer

作　　者：何本春 龙林川 张云寒 韩伟 张懿丹 HE Benchun;LONG Linchuan;ZHANG Yunhan;HAN Wei;ZHANG Yidan(College of Civil Engineering and Architecture,Cuangxi University,Nanning 530004,Guangxi,China;Guangxi Guimin Imvestment Neu Material Technology Co.,Ltd.,Nanning 530221,Guangxi,China;Department of Urban Construction,Beijing University of Technology,Beijing 100020,China;Guangxi University Design Institute Co.,Ltd.,Nanning 530004,Guangxi,China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西桂民投新材料科技有限公司,广西南宁530221 [3]北京工业大学城市建设学部,北京100020 [4]广西大学设计院有限公司,广西南宁530004

出　　处：《工程建设》2021年第9期19-24,共6页Engineering Construction

基　　金：国家自然科学基金资助项目(51268003、59868001)。

摘　　要：某场地高层建筑物基底以下赋存有含水卵石层及软弱黏土层,其天然基础软弱下卧层承载力验算不满足设计要求。本文采用高压旋喷法对软弱黏土层进行加固处理,并对处理后的地基进行静载试验及建筑物沉降观测。结果表明,采用高压旋喷桩处理后的复合地基满足上部建筑物荷载和变形要求。本文结果可为地基基础设计和施工提供一定的借鉴与参考。A water-bearing pebble layer and a weak clay layer exist below the base of a high-rise building on a site, and the bearing capacity of the weak underlying layer of the natural foundation does not meet the design requirements.The high-pressure jet grouting method is used to reinforce the weak clay layer, and the treated foundation is subjected to static load test and building settlement observation.The results show that, the composite foundation treated with high-pressure jet grouting piles meets the load and deformation requirements of the upper building.The results of this paper can provide references for basic foundation design and construction.

关 键 词：软弱层 卵石层 旋喷桩复合地基 静载试验 沉降观测 

分 类 号：TU753.3[建筑科学—建筑技术科学]