Manufacturing and construction method of air bag type concrete engineering deformation joint water stop type cavity die

Abstract

The invention relates to a manufacturing and construction method of an air bag type concrete engineering deformation joint water stop type cavity die. The cavity die comprises a framework and an air bag and enables a red copper water stop piece embedded at the first-stage concrete fracture surface position to be clamped into a groove, air pressure is set in the air bag of the cavity die, second-stage concrete is cast in a layered mode, the air pressure in the air bag is released and the cavity die is hoisted out after the concrete initially sets, a semi-circular cavity is formed in the second-stage concrete fracture surface, and water stop effect can be achieved by injecting molten asphalt into the semi-circular cavity. The problem of deformation joint water seepage caused by uneven stratum settlement or diastrophism, of a water conservancy project, can be solved, and the cavity die can be repeatedly utilized.

Description

technical field [0001] The invention relates to an underground / underwater building waterproof device, in particular to a manufacturing and construction method of an airbag-type concrete engineering deformation joint waterproofing cavity mold. Background technique [0002] In existing concrete structures, such as retaining dams, reservoirs, subways, culverts, sluices, tunnels and other underground and underwater projects, due to the inability to pour continuously or the deformation of the foundation settlement (earthquake), or due to temperature changes Due to thermal expansion and contraction of concrete components caused by thermal expansion and contraction, deformation joints are often deliberately left during pouring. These gaps must take anti-leakage measures to prevent external water or groundwater from leaking into the structural space. A concrete groove is set between the stage concrete and the second stage concrete, and soft asphalt and copper sheets or rubber waters...

AI Technical Summary

Problems solved by technology

[0002] In existing concrete structures, such as retaining dams, reservoirs, subways, culverts, sluices, tunnels and other underground and underwater projects, due to the inability to pour continuously or the deformation of the foundation settlement (earthquake), or due to temperature changes Due to thermal expansion and contraction of concrete components caused by thermal expansion and contraction, deformation joints are often deliberately left during pouring. These gaps must take anti-leakage measures to prevent external water or groundwater from leaking into the structural space. A concrete groove is set between the stage concrete and the second stage concrete, and soft asphalt and copper sheets or rubber waterstops are arranged in the groove. However, this method requires prefabricated concrete grooves. The 3 sides of the groove are chiseled, which will prolong the construction period and increase labor. At the same time, because the length (height) of each concrete groove is generally only 50-100cm, the deformation gap must be formed by connecting multiple concrete grooves, so there will be multiple Horizontal gaps and irregular deformation of multiple concrete grooves will cause the leakage of soft asphalt in the subsequent pouring, and it is difficult to clean up; and the technology of using channel steel instead of concrete grooves in the patent application No. 2014100489253, although compared with the original construction This method can save costs and shorten the construction period, but because the channel steel must be kept in the dam body, it cannot be reused, and it still causes waste. Therefore, there is an urgent need for a cavity equipment that can prefabricate asphalt in the second-stage concrete section

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