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A platform for research: civil engineering, architecture and urbanism
Suspension type reverse construction method subway foundation pit supporting structure and construction method thereof
The invention relates to a suspension type reverse construction method subway foundation pit supporting structure and a construction method thereof. The structure comprises fender posts on two sides of an underground obstacle, a transverse grid steel frame is arranged between the fender posts from top to bottom, and a net is hung on the outer side of the grid steel frame for spraying concrete. A suspension type grid steel frame plus net shotcrete supporting structure based on a top-to-down reverse construction method is constructed, two ends of the grid steel frame are anchored in fender postson the two sides of the underground obstacle to achieve the effects of supporting and blocking a foundation pit wall soil body, the grid steel frame is provided with vertical connecting steel bars, and the top of the grid steel frame is anchored into a pile top crown beam to form a suspension structure; and the problem that drilled pile supporting cannot be implemented at positions of obstacles such as underground pipelines is solved, the construction efficiency is high, the investment is low, the influence on a surrounding environment is small, and construction is safe and reliable.
本发明涉及一种悬挂式逆作法地铁基坑支护结构及其施工方法，所述结构包括地下障碍物两侧的围护桩，围护桩之间自上而下设置横向的格栅钢架，格栅钢架外侧挂网喷射混凝土。本发明构建了从上至下逆作法的悬挂式格栅钢架+网喷混凝土支护结构，其中，格栅钢架两端锚于地下障碍物两侧的围护桩内，起到对基坑壁土体支挡的作用，格栅钢架设置竖向连接钢筋，顶部锚入桩顶冠梁内，形成悬挂结构；本发明解决了在地下管线等障碍物处不能实施钻孔桩支护的问题，施工功效高，投资小，对周边环境影响小，施工安全可靠。
Suspension type reverse construction method subway foundation pit supporting structure and construction method thereof
The invention relates to a suspension type reverse construction method subway foundation pit supporting structure and a construction method thereof. The structure comprises fender posts on two sides of an underground obstacle, a transverse grid steel frame is arranged between the fender posts from top to bottom, and a net is hung on the outer side of the grid steel frame for spraying concrete. A suspension type grid steel frame plus net shotcrete supporting structure based on a top-to-down reverse construction method is constructed, two ends of the grid steel frame are anchored in fender postson the two sides of the underground obstacle to achieve the effects of supporting and blocking a foundation pit wall soil body, the grid steel frame is provided with vertical connecting steel bars, and the top of the grid steel frame is anchored into a pile top crown beam to form a suspension structure; and the problem that drilled pile supporting cannot be implemented at positions of obstacles such as underground pipelines is solved, the construction efficiency is high, the investment is low, the influence on a surrounding environment is small, and construction is safe and reliable.
本发明涉及一种悬挂式逆作法地铁基坑支护结构及其施工方法，所述结构包括地下障碍物两侧的围护桩，围护桩之间自上而下设置横向的格栅钢架，格栅钢架外侧挂网喷射混凝土。本发明构建了从上至下逆作法的悬挂式格栅钢架+网喷混凝土支护结构，其中，格栅钢架两端锚于地下障碍物两侧的围护桩内，起到对基坑壁土体支挡的作用，格栅钢架设置竖向连接钢筋，顶部锚入桩顶冠梁内，形成悬挂结构；本发明解决了在地下管线等障碍物处不能实施钻孔桩支护的问题，施工功效高，投资小，对周边环境影响小，施工安全可靠。
Suspension type reverse construction method subway foundation pit supporting structure and construction method thereof
悬挂式逆作法地铁基坑支护结构及其施工方法
AN YINGXUAN (author) / LIU HAN (author) / WEN BAOJUN (author) / HOU CHAO (author) / ZHANG YANGE (author) / YANG HAI (author) / YANG SHUO (author) / YU PU (author)
2020-12-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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