Temporary plugging structure and construction method of large-section intake and drainage box culvert under operating conditions
A technology for water intake and drainage in operation status, applied to underwater structures, infrastructure engineering, water conservancy projects, etc., can solve the problems of poor plugging effect and high construction risk in underwater operations, so as to improve the plugging effect and reduce the underwater Operational risk, combined with the effect of small workload
Active Publication Date: 2019-09-10
SHANGHAI FOUND ENG GRP
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Problems solved by technology
[0004] The invention provides a temporary plugging structure and construction method of a large-section water intake and drainage box culvert under operating conditions, which is used to solve large-section water intake and drainage box culverts. poor performance problem
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[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] like figure 1 , as shown in 2, a large-section water intake and drainage box culvert is temporarily blocked in operation state, including box culvert top plate 1, box culvert bottom plate 2, steel pipe pile 3, gate box 4, jack 5, wing plate 6, airbag 7.
[0022] Steel pipe piles 3 are built between the top plate 1 of the box culvert and the bottom plate 2 of the box culvert, as the "backer" for the blocking structure to keep stable under the action of the operating water flow, and also serve as the installation guide of the blocking structure. There is a wing plate 6 and a jack 5 outside, an air bag 7 is embedded on the wing plate 6, the gate box 4 is lowered along the steel pipe pile 3 to the box culvert top plate 1 and the box culvert bottom plate 2, and the jack 5 outside the gate box 4 is pushed out. After the airbags 7 of the wings 6 on both...
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The invention relates to a temporary blocking structure of a large-section water-taking-and-drainage box culvert under an operation state and a construction method. Steel pipe piles are arranged between a box culvert top plate and a box culvert bottom plate in a struck mode, wing plates and jacks are arranged in the two sides of a brake box, air bags are inlaid in the wing plates, and the brake box is lowered between the box culvert top plate and the box culvert bottom plate along the steel pipe piles; the wing plates of two sides are jacked out by the jacks in the brake box, after the air bags of the wing plates of two sides are inflated and expanded, the brake box is closely attached to the inner wall of the box culvert, and underwater concrete is poured in the brake box. The steel pipepiles are arranged in the struck mode to serve as 'backers' of the temporary blocking structure, and construction can be conducted under the normal operation state of the box culvert; and the brake box with a hydraulic system is adopted, the air bags serve as assistants, the brake box can be closely attached to a box culvert structure, and the blocking effect is greatly ensured. Compared with a common underwater blocking technology, the influences of the operation water pressure and the flow velocity on the construction method are small, the construction risk is greatly reduced while the blocking effect is ensured, and the temporary blocking structure and the construction method can be applied and popularized in the temporary blocking working conditions of the large-section water-taking-and-drainage box culvert under the operation state.
Description
technical field [0001] The invention relates to a temporary blocking structure and a construction method for a conventional large-section water intake and drainage box culvert, in particular to a temporary blocking structure and a construction method for a large-section water intake and drainage box culvert in an operating state. Background technique [0002] With the renewal of urban construction, the old underground large-section water intake and drainage box culverts need to be abolished and connected to the new box culverts due to operational needs or urban construction needs of the original route. In the case of normal operation of the box culvert, the problem of temporary blocking, cutover and re-arrangement. [0003] The conventional large-section intake and drainage box culverts are temporarily blocked by divers underwater. The construction process is greatly affected by the operating water head and operating flow rate. The construction risk of divers underwater oper...
Claims
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IPC IPC(8): E02D29/045
Inventor 王涛滕海渤江杰李耀良熊菲
Owner SHANGHAI FOUND ENG GRP