天津周大福金融中心超深基坑地下水综合控制技术  

Groundwater Integrated Control Technology of Super Deep Foundation Excavation in Tianjin CTF Financial Center Project

作　　者：于海申[1] 杨晨[1] 肖大伟 范少兴 阙圣超 

机构地区：[1]中国建筑第八工程局有限公司天津分公司,天津300450

出　　处：《施工技术》2017年第23期98-102,共5页Construction Technology

基　　金：中建八局科技资助(2014-01)

摘　　要：以天津周大福金融中心工程为背景,其地处天津市饱和软黏土地区,基坑开挖深度为27.5m,电梯井位置深度达32.3m,距第2承压含水层顶部只有8m,地下连续墙未切断第2承压含水层,基坑底部土层为砂质黏土,渗水系数高。经抽水试验测得基坑存在地下连续墙渗漏及坑底突涌风险,项目采取一系列措施对地下水综合控制,未对周边环境造成不良影响。This paper is based on Tianjin CTF Financial Center project,the construction method of high strength and high performance concrete in steel pipe is introduced in view of the characteristics of steel frame column. The key points are the improvement of steel structure,the optimization of steel pipe jacking,steel pipe concrete construction and top multi-cavity steel pipe jacking control and many other aspects. The concrete pipe jacking construction technology ensures the quality of construction,at the same time,greatly reduces construction time,reduces construction costs.

关 键 词：高层建筑 深基坑 地下水 监测 袖阀管 封底 施工技术 

分 类 号：TU46[建筑科学—结构工程]