摘要
以天津市地铁5号线思源道站上盖地块结建地下空间开发为工程背景,提出并在天津地区首次应用大面积基坑整体开挖关键技术,并辅以对称按需降水、环形辐射支撑体系及在线监测等多项关键技术,详细阐述土方开挖、对称降水、围护支撑体系设计要点及相应施工技术要求,并分析各项关键技术的应用效果。
This paper motivates by the engineering background of underground space excavation in the Siyuan road subway station in Tianjin,the key construction technology of integral excavation for largearea foundation excavation is put forward and firstly applied in Tianjin,which applied the assistive technologies of dewatering,supporting structure and monitoring.The design points of earthwork excavation,symmetrical precipitation and retaining support system and corresponding requirements of construction technology are elaborated,and the application effects of various key technologies are analyzed.
作者
董敏忠
DONG Minzhong(China Railway 18th Bureau(Group)the 4th Engineering Co.,Ltd.,Tianjin 300350,China)
出处
《施工技术》
CAS
2019年第9期94-97,共4页
Construction Technology
基金
中铁十八局课题:城市地下空间零近接驳拓建施工关键技术研究
关键词
基坑
地铁车站
整体开挖
围护结构
施工技术
foundation excavation
subway stations
integral excavation
enclosures
construction
