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Steel sheet pile cofferdam construction method under complex marine environment condition
The invention provides a construction method of a steel sheet pile cofferdam under complex marine environment conditions, which comprises the following steps: firstly, connecting steel casings at four corners, and respectively mounting brackets on the steel casings at the four corners; corbels are used as supports, four layers of supporting structures are sequentially assembled from bottom to top, and an inner supporting and hanging system is installed; the supporting structure is hoisted, and the bracket is dismantled; the supporting structure is lowered, and steel sheet piles are inserted and driven to be closed; mud suction operation is conducted, and meanwhile the supporting structure is lowered to the designed elevation; mud is sucked to the bottom design elevation of the bottom sealing concrete, and the bottom sealing concrete is poured; water is pumped in the cofferdam, then a steel casing is cut off, and a pile head is cleaned; and the bearing platform is poured, the supporting structures are gradually dismantled, and after the lowest supporting structure is dismantled, the steel sheet piles are pulled out. According to the method, the problem of steel sheet pile cofferdam construction under the complex marine environment conditions with high wind, high waves and typhoons is solved, meanwhile, the construction sequence of inner support lowering and water pumping combination is adopted, the buried depth of the steel sheet piles can be reduced, and the economical efficiency of the steel sheet piles is improved.
本发明创造提供了一种海上复杂环境条件下钢板桩围堰施工方法，先接高四角处的钢护筒，在四角处的钢护筒上分别安装牛腿；以牛腿作为支撑，由下至上依次拼装四层支护结构，并安装内支撑吊挂系统；吊起支护结构，拆除牛腿；下放支护结构，并插打钢板桩至合龙；吸泥作业，同时下放支护结构至设计标高；吸泥至封底混凝土底设计标高，浇筑封底混凝土；围堰内抽水，然后割除钢护筒，清理桩头；浇筑承台，并逐步拆除支护结构，待拆除最下层支护结构后，拔出钢板桩。本发明方法解决了风高浪急有台风的海上复杂环境条件下钢板桩围堰施工的难题，同时，采用下放内支撑与抽水结合的施工顺序，可以减小钢板桩的入土深度，提高钢板桩的经济性。
Steel sheet pile cofferdam construction method under complex marine environment condition
The invention provides a construction method of a steel sheet pile cofferdam under complex marine environment conditions, which comprises the following steps: firstly, connecting steel casings at four corners, and respectively mounting brackets on the steel casings at the four corners; corbels are used as supports, four layers of supporting structures are sequentially assembled from bottom to top, and an inner supporting and hanging system is installed; the supporting structure is hoisted, and the bracket is dismantled; the supporting structure is lowered, and steel sheet piles are inserted and driven to be closed; mud suction operation is conducted, and meanwhile the supporting structure is lowered to the designed elevation; mud is sucked to the bottom design elevation of the bottom sealing concrete, and the bottom sealing concrete is poured; water is pumped in the cofferdam, then a steel casing is cut off, and a pile head is cleaned; and the bearing platform is poured, the supporting structures are gradually dismantled, and after the lowest supporting structure is dismantled, the steel sheet piles are pulled out. According to the method, the problem of steel sheet pile cofferdam construction under the complex marine environment conditions with high wind, high waves and typhoons is solved, meanwhile, the construction sequence of inner support lowering and water pumping combination is adopted, the buried depth of the steel sheet piles can be reduced, and the economical efficiency of the steel sheet piles is improved.
本发明创造提供了一种海上复杂环境条件下钢板桩围堰施工方法，先接高四角处的钢护筒，在四角处的钢护筒上分别安装牛腿；以牛腿作为支撑，由下至上依次拼装四层支护结构，并安装内支撑吊挂系统；吊起支护结构，拆除牛腿；下放支护结构，并插打钢板桩至合龙；吸泥作业，同时下放支护结构至设计标高；吸泥至封底混凝土底设计标高，浇筑封底混凝土；围堰内抽水，然后割除钢护筒，清理桩头；浇筑承台，并逐步拆除支护结构，待拆除最下层支护结构后，拔出钢板桩。本发明方法解决了风高浪急有台风的海上复杂环境条件下钢板桩围堰施工的难题，同时，采用下放内支撑与抽水结合的施工顺序，可以减小钢板桩的入土深度，提高钢板桩的经济性。
Steel sheet pile cofferdam construction method under complex marine environment condition
一种海上复杂环境条件下钢板桩围堰施工方法
GUO WANLIANG (author) / GAI QINGSHAN (author) / GONG GUOFENG (author) / ZHU LINDA (author) / ZHANG YAOLIN (author) / WANG RENHUI (author) / YU SHAOBIN (author) / ZHANG SHENG (author) / FU YUNSHENG (author) / ZHANG WEI (author)
2023-02-03
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Complex riverbed steel sheet pile cofferdam and construction method
| European Patent Office | 2024