Foldable water stopping type cavity die for concrete deformation joint and manufacturing and construction method thereof

Abstract

The invention relates to a foldable water stopping type cavity die for a concrete deformation joint and manufacturing and construction method thereof. The foldable water stopping type cavity die comprises a cavity die body. The foldable water stopping type cavity die is characterized in that the cavity die is formed by movably chaining a rear side plate, a left side plate, a right side plate, a left front plate and a right front plate; the cavity die is rectangular by overlooking, and a medium clearance is formed between the left front plate and the right front plate in the front part; when in use, the front part of the cavity die is aligned with a water stopping sheet which is embedded in the first phase concrete section, the water stopping sheet extends into the cavity die through the medium clearance, then the second phase concrete can be poured, the cavity die is hoisted out after the second phase concrete is initially set, and thus the cavity capable of pouring molten asphalt can be formed in the second phase concrete section.

Description

technical field [0001] The invention relates to an underground / underwater building waterproof device, in particular to a foldable concrete deformation joint waterproof cavity mold and its manufacturing and construction methods. 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 and construction 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. The current common practice is A concrete groove is set between the first-stage concrete and the second-stage concrete, and s...

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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 and construction 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. The current common practice is A concrete groove is set between the first-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. In order to make the concrete grooves and the second-stage concrete tightly combined, It is necessary to chisel rough treatment on the 3 sides of the concrete trough, which will prolong the construction period and increase labor. At the same time, since the length (height) of each concrete trough is generally only 50-100cm, the deformation gap must be formed by connecting multiple concrete troughs, so it will The generation of multiple transverse gaps and the irregular deformation of multiple concrete tanks 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 tanks in patent application No. 2014100489253, although Compared with the original construction method, it can save costs and shorten the construction period, but because the channel steel must be kept in the dam body and cannot be reused, it still causes waste. Therefore, there is an urgent need for a method that can prefabricate the cavity for asphalt in the second-stage concrete section. equipment

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