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A platform for research: civil engineering, architecture and urbanism
Vacuum preloading assembly type water pressure self-stabilizing cantilever water covering cofferdam and construction method thereof
The invention relates to a vacuum preloading assembly type water pressure self-stabilizing cantilever water covering cofferdam and a construction method thereof. The problems that an existing water covering cofferdam is large in size, large in material consumption, not environmentally friendly in construction, high in construction cost, large in construction vacuum sealing quality control difficulty, slow in construction progress and the like are solved. The cofferdam is formed by sequentially connecting a plurality of cofferdam framework units end to end in a surrounding mode, a water pressure plate is fixed to one side of each cofferdam framework unit, and the cofferdam framework units and the water pressure plates are covered with waterproof films. According to the assembly type water pressure self-stabilizing cantilever water covering cofferdam, the water pressure moment difference principle is utilized, the corner point of a cofferdam support serves as the moment center, covering water is prevented from entering the bottom of the cofferdam support through a film sealing anti-seepage measure, the vertical upward water pressure of the plate bottom is eliminated, the downward water pressure of the upper surface is increased along with rising of the covering water, therefore anti-overturning stabilizing moment is generated, when vertical anti-overturning stable water pressure moment is larger than lateral water pressure overturning moment, the water covering cofferdam can achieve a self-stabilizing function.
本发明涉及一种真空预压装配式水压自稳悬臂覆水围堰及其施工方法，用于克服现有的覆水围堰存在的体量大、用料多、施工不环保、施工成本高、施工真空密封质量控制难度大、以及施工进度慢等问题。本发明由若干个围堰骨架单元依次首尾相连合围而构成，每一个围堰骨架单元的一侧都固定有水压板，并且在围堰骨架单元和水压板上覆盖有隔水膜。在本发明中，利用水压力矩差原理，以所述围堰支架的拐角点为力矩中心，用膜封防渗措施阻止覆水进入围堰支架底部，消除板底竖直向上水压，而上表面向下的水压力随着覆水升高而加大，从而产生抗倾覆的稳定力矩，当竖向抗倾覆稳定水压力矩大于侧向水压力倾覆力矩时，该覆水围堰就能达到自稳功能。
Vacuum preloading assembly type water pressure self-stabilizing cantilever water covering cofferdam and construction method thereof
The invention relates to a vacuum preloading assembly type water pressure self-stabilizing cantilever water covering cofferdam and a construction method thereof. The problems that an existing water covering cofferdam is large in size, large in material consumption, not environmentally friendly in construction, high in construction cost, large in construction vacuum sealing quality control difficulty, slow in construction progress and the like are solved. The cofferdam is formed by sequentially connecting a plurality of cofferdam framework units end to end in a surrounding mode, a water pressure plate is fixed to one side of each cofferdam framework unit, and the cofferdam framework units and the water pressure plates are covered with waterproof films. According to the assembly type water pressure self-stabilizing cantilever water covering cofferdam, the water pressure moment difference principle is utilized, the corner point of a cofferdam support serves as the moment center, covering water is prevented from entering the bottom of the cofferdam support through a film sealing anti-seepage measure, the vertical upward water pressure of the plate bottom is eliminated, the downward water pressure of the upper surface is increased along with rising of the covering water, therefore anti-overturning stabilizing moment is generated, when vertical anti-overturning stable water pressure moment is larger than lateral water pressure overturning moment, the water covering cofferdam can achieve a self-stabilizing function.
本发明涉及一种真空预压装配式水压自稳悬臂覆水围堰及其施工方法，用于克服现有的覆水围堰存在的体量大、用料多、施工不环保、施工成本高、施工真空密封质量控制难度大、以及施工进度慢等问题。本发明由若干个围堰骨架单元依次首尾相连合围而构成，每一个围堰骨架单元的一侧都固定有水压板，并且在围堰骨架单元和水压板上覆盖有隔水膜。在本发明中，利用水压力矩差原理，以所述围堰支架的拐角点为力矩中心，用膜封防渗措施阻止覆水进入围堰支架底部，消除板底竖直向上水压，而上表面向下的水压力随着覆水升高而加大，从而产生抗倾覆的稳定力矩，当竖向抗倾覆稳定水压力矩大于侧向水压力倾覆力矩时，该覆水围堰就能达到自稳功能。
Vacuum preloading assembly type water pressure self-stabilizing cantilever water covering cofferdam and construction method thereof
一种真空预压装配式水压自稳悬臂覆水围堰及其施工方法
GONG HONGQI (author) / LIU JIAN (author) / SHANG ZHEJIONG (author)
2021-11-26
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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