高层建筑附属裙房地基基础不均匀沉降加固方法研究  

Study of Strengthening Method for Uneven Settlement of Foundation for Podium Attached to High-Rise Building

作　　者：陈昌清 张偌涵 刘玉康 张瑞云 CHEN Changqing;ZHANG Ruohan;LIU Yukang;ZHANG Ruiyun(College of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Hebei Rui Lin Construction Technology Co.,LTD.,Shijiazhuang 050031,China;Key Laboratory of Roads and Railway Engineering Safety Control,Shijiazhuang Tiedao University,Ministry of Education,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]河北睿临建筑科技有限公司,石家庄050031 [3]石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室,石家庄050043

出　　处：《结构工程师》2023年第3期180-186,共7页Structural Engineers

摘　　要：某高层建筑附属裙房地基基础与主体结构之间发生了相对沉降,上部结构出现开裂。为了消除地基基础下沉,结合高层附属裙房结构特点,分析了高层建筑附属裙房产生不均匀沉降的原因,提出了“室外人工挖孔灌注桩+基础下方土体注浆”的综合地基基础加固止沉的方法,给出了详细的加固方案和加固计算思路。对加固后地基基础进行沉降观测,对加固效果进行了分析。结果表明,“室外人工挖孔灌注桩+基础下方土体注浆”的综合加固方案是可行的。提出的地基加固方案对类似工程具有参考价值。Relative settlement occurred between the foundation of a podium attached to high-rise building and the main structure,leading to cracking of the superstructure.In order to eliminate foundation settlement,the causes of uneven settlement by combining with the structural characteristics of the podium attached to highrise building were analyzed,and a comprehensive foundation reinforcement method of"cast-in-place pile by artificial digging hole on outdoors+soil grouting under foundation"was proposed.In addition,the method and reinforcement calculation thinking were given in detail.Then,settlement observation of the reinforced foundation was performed,and the reinforcement effect was analyzed.The results show that it is feasible to adopt the method of"cast-in-place pile by artificial digging hole on outdoors+soil grouting under foundation".The foundation reinforcement method can provide a reference for similar engineering cases.

关 键 词：桩基础 地基基础加固 植筋 注浆 不均匀沉降 

分 类 号：TU753.8[建筑科学—建筑技术科学]