大型综合交通枢纽与地铁车站同期同坑施工支护阶段施工技术

CONSTRUCTION TECHNOLOGY OF ARGE-CALE INTEGRATED TRANSPORTATION HUB AND SUBWAY STATION IN THE SAME PIT CONSTRUCTION SUPPORT STAGE

北京东部某在建大型交通枢纽工程主体结构与钢结构施工基本完成,建成后可实现高铁、公交、出租车、网约车、地铁的换乘功能,枢纽工程施工较晚,开始建设时北侧与西侧已建成城市道路,东侧邻近已建成高铁站房,南侧为地铁在建工程,施工红线内93.4%的占地面积为明挖基坑,加之基坑中枢纽与地铁工程同步施工,施工难度极大、工期极其紧张,地铁车站同期同一基坑中施工,这对基坑开挖阶段的各项施工标准提出了全新的要求。主要介绍了多级基坑施工阶段一系列施工现场的主要技术要求及注意事项。

The construction of the main structure and steel structure of a large-scale transportation hub under construction in the east of Beijing city has been basically completed,at the beginning of construction,the urban road has been built on the north side and the west side,the high-speed railway station building has been built on the east side,and the subway station is on the south side,in addition,the central hub of the foundation pit and the subway project are under construction at the same time,the construction site is small,the project is large,the construction is very difficult,and the construction period is extremely tight,so the subway station is under construction at the same time in the same foundation pit,this paper mainly described the main technical requirements and matters needing attention of a series of construction sites in the construction stage of multi-stage foundation pit.