珠海某混凝土内撑式支护结构深基坑监测与分析  

Monitoring and Analysis of Deep Foundation Pit of Concrete Support Structure in Zhuhai

作　　者：文建鹏 赵笑鹏 姜晓迪 WEN Jianpeng;ZHAO Xiaopeng;JIANG Xiaodi(Shenzhen Geotechnical Investigation ＆ Surveying Institute Co. , Ltd, . , Shenzhen, Guangdong 518028, China;Shanghai Tunnel Engineering Co. , Ltd . ,Shanghai 200232, China;School of Civil Engineering, Zhengzhou University, Zhengzhou, He＇nan 450001, China)

机构地区：[1]深圳市勘察测绘院有限公司,广东深圳518028 [2]上海隧道工程有限公司,上海200232 [3]郑州大学土木工程学院,河南郑州450001

出　　处：《水利与建筑工程学报》2018年第2期99-103,共5页Journal of Water Resources and Architectural Engineering

摘　　要：以珠海某混凝土内撑式支护结构深基坑为例,介绍了滨海平原场地淤泥质土层条件下基坑监测方案设计,对桩体水平位移、支撑轴力、地表沉降和地下水位变化进行分析,总结监测对象在实际基坑开挖过程的变化规律。监测结果显示:桩体水平位移在基坑开挖期间发展迅速,挖至基底后发展速度放缓,但并未停止;滨海平原场地淤泥土层条件下,基坑开挖对周边土体变形影响非常大,如不能有效限制基坑侧向变形,将导致基坑周边地面产生较大的沉降。Taking the deep foundation pit of concrete supporting structure in Zhuhai as an example,this paper introduced the foundation pit monitoring scheme design under the conditions of muddy soil layer in coastal plain,and the horizontal displacement,support axial force,surface subsidence and groundwater level change are analyzed.The law of change in actual excavation process is summarized.The monitoring results show that the horizontal displacement of the pile develops rapidly during the excavation of the foundation,and the development speed slowed down after excavation to the base.In the coastal plain site,the effect of excavation on the deformation of surrounding soil is very large.If it cannot effectively limit the lateral deformation of the foundation pit,it will lead to the settlement of the ground around the foundation pit.

关 键 词：基坑工程 监测 混凝土内支撑 水平位移 沉降 

分 类 号：TU413.6[建筑科学—岩土工程]