A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Water-rich sand layer subway station open cut foundation pit precipitation-free construction method and device
The invention belongs to the technical field of urban underground space construction, and relates to a water-rich sand layer subway station open cut foundation pit precipitation-free construction method. The method comprises the steps that (1) pile foundations are arranged, and the design elevation of a first inner support and the design elevation of a plurality of inner supports are determined; 2) digging to a first inner support design elevation, and installing a plurality of parallel reinforced concrete supports; (3) excavation continues to be conducted to the designed elevation of each inner support, and installation of the multiple inner supports is completed in sequence; (4) meanwhile, the foundation pit is excavated to the position below the underground water level line, sandy soil is excavated out through a grab bucket, then mortar is sucked out through a mud raking machine, and water is injected into the foundation pit; and (5) excavating to the position 0.1 m higher than the designed elevation, and sealing the bottom, so that construction is completed. The method is simple in process, reliable in technology, safe and environment-friendly, and has a good application prospect; meanwhile, according to the construction device, mechanical construction is achieved, the labor cost is reduced, and the construction efficiency is improved.
本发明属于城市地下空间施工技术领域，涉及一种富水砂层地铁车站明挖基坑无降水施工方法包括1)设置桩基础并确定第一道内支撑以及多道内支撑的设计标高；2)挖至第一道内支撑设计标高处，安装多根平行的钢筋混凝土支撑；3)继续开挖至每一道内支撑设计标高处依次完成多道内支撑的安装；4)同时，开挖基坑至地下水位线以下处，先利用抓斗挖出砂土，再利用耙泥机吸出砂浆并注水至基坑内；5)开挖至设计标高高0.1m处封底，完成施工。本发明工艺简单、技术可靠、安全环保，具有良好的应用前景；同时，本发明的施工装置，实现机械化施工，减少人力成本，提高施工效率。
Water-rich sand layer subway station open cut foundation pit precipitation-free construction method and device
The invention belongs to the technical field of urban underground space construction, and relates to a water-rich sand layer subway station open cut foundation pit precipitation-free construction method. The method comprises the steps that (1) pile foundations are arranged, and the design elevation of a first inner support and the design elevation of a plurality of inner supports are determined; 2) digging to a first inner support design elevation, and installing a plurality of parallel reinforced concrete supports; (3) excavation continues to be conducted to the designed elevation of each inner support, and installation of the multiple inner supports is completed in sequence; (4) meanwhile, the foundation pit is excavated to the position below the underground water level line, sandy soil is excavated out through a grab bucket, then mortar is sucked out through a mud raking machine, and water is injected into the foundation pit; and (5) excavating to the position 0.1 m higher than the designed elevation, and sealing the bottom, so that construction is completed. The method is simple in process, reliable in technology, safe and environment-friendly, and has a good application prospect; meanwhile, according to the construction device, mechanical construction is achieved, the labor cost is reduced, and the construction efficiency is improved.
本发明属于城市地下空间施工技术领域，涉及一种富水砂层地铁车站明挖基坑无降水施工方法包括1)设置桩基础并确定第一道内支撑以及多道内支撑的设计标高；2)挖至第一道内支撑设计标高处，安装多根平行的钢筋混凝土支撑；3)继续开挖至每一道内支撑设计标高处依次完成多道内支撑的安装；4)同时，开挖基坑至地下水位线以下处，先利用抓斗挖出砂土，再利用耙泥机吸出砂浆并注水至基坑内；5)开挖至设计标高高0.1m处封底，完成施工。本发明工艺简单、技术可靠、安全环保，具有良好的应用前景；同时，本发明的施工装置，实现机械化施工，减少人力成本，提高施工效率。
Water-rich sand layer subway station open cut foundation pit precipitation-free construction method and device
一种富水砂层地铁车站明挖基坑无降水施工方法及施工装置
HU ZHINAN (author) / MENG SHUOPENG (author) / QIN SHAOBO (author) / SHEN JIN (author) / LIU ZHICHUN (author) / ZHANG ZHENBO (author) / SUO HONGWEN (author)
2022-04-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2021
Construction method of water-rich sand layer ultra-wide special-shaped subway station
| European Patent Office | 2023
Subway station deep foundation pit construction method under water-rich geological condition
| European Patent Office | 2021
Excavation construction method of subway station open-cut interval foundation pit
| European Patent Office | 2021
Excavation construction method of subway station open-cut interval foundation pit
| European Patent Office | 2021