Underwater concrete pouring method in underwater bridge construction

Abstract

The invention discloses an underwater concrete pouring method applied to water bridge construction. A hopper, a leaking groove and a rubber hose are included; the leaking groove is composed of a trumpet-shaped flaring part and a round-pipe-shaped leaking mouth part; and the upper end of the rubber hose is connected with the round-pipe-shaped leaking mouth part, the connection end is in a cylindrical shape, the lower end of the rubber hose is a free end, and the lower end of the rubber hose is flat when no concrete passes the rubber hose. The device is easy to manufacture and low in dead load, the length of the rubber hose can be changed freely, the lower end of the hose is in a flat closed state naturally, is opened to be in the cylindrical shape only when concrete passes the rubber hose and immediately recovers to the flat closed state after concrete passes the hose, and therefore the contact space between concrete and water in the hose is effectively shortened, and the influence that the concrete is flushed by water is effectively reduced. In addition, the lower end of the rubber hose can swing freely, so that the movement frequency of the hopper is reduced, and the plugging effect between a steel suspension box bottom board and a bearing platform steel casing is improved.

Description

technical field [0001] The invention relates to a construction method of an underwater bridge, in particular to an underwater concrete pouring method in the construction of an underwater bridge cap. Background technique [0002] In the construction of caps of bridges in water, steel hanging box cofferdams are often used for construction. When the gap between the bottom plate of steel hanging boxes and the steel casing of caps is blocked, the commonly used concrete pouring method is to use iron A hollow cylindrical conduit made of iron is added to the hopper, but this pouring device has the disadvantages of being heavy, the length of the conduit cannot be changed arbitrarily, the conduit cannot be swung at will, and the contact space between the concrete and the water body in the conduit is large, and the concrete is easily washed by water. In addition, in the process of pouring construction, there are many processes, and the hopper is inconvenient to move. Contents of the ...

AI Technical Summary

Problems solved by technology

[0002] In the cap platform construction of bridge engineering in water, steel hanging box cofferdams are often used for construction. When the gap between the steel hanging box bottom plate and the cap platform steel casing is sealed, the commonly used concrete pouring method is to use iron A hollow cylindrical conduit made of iron is added to the hopper, but this pouring device has the disadvantages of self-heaviness, the length of the conduit cannot be changed arbitrarily, the conduit cannot be swung at will, and the contact space between the concrete and the water body in the conduit is large, and the concrete is easily washed by water.

In addition, in the process of pouring construction, there are many processes, and the hopper is inconvenient to move

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