A post-pouring belt anti-seepage construction method

Abstract

The invention discloses a post-cast strip anti-seepage construction method, a reinforced concrete reinforcing layer is additionally arranged at the bottom of a bottom plate post-cast strip, a water collecting pit is formed in the bottom of the bottom plate post-cast strip, an underground water pressure release pipe is pre-buried at the bottom of the post-cast strip, and the bottom plate post-caststrip construction joint is obliquely arranged. A special-shaped water-stopping steel plate is arranged, and hidden construction is carried out on the post-cast strip concrete of the bottom plate in asegmented mode. The reinforced concrete reinforcing layer is arranged, so that the pressure resistance of the bottom of the bottom plate post-cast strip is enhanced, the double-layer protection withthe post-cast strip cushion layer is formed, and the leakage risk of the post-cast strip is reduced. The water collecting pit and the pressure release pipe are arranged, so that the accumulated watercan be quickly drained out when the post-cast strip is hidden. The pressure relief pipe can release the underground water pressure in advance to prevent the bottom of the post-cast strip from being damaged. The special-shaped water-stopping steel plate is arranged, so that concrete at the construction joint is subjected to 100% scabbling and the leakage risk of the construction joint is reduced. Through adopting of the construction scheme of the bottom plate post-cast strip concrete sequence hiding in a segmented mode, the risk of transverse cracks due to too long one-time pouring of concreteis effectively avoided.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an anti-seepage construction method for a post-casting zone. Background technique [0002] The leakage of water in the post-casting zone of the basement floor structure has always been a common quality problem in construction projects, and it is difficult and costly to maintain in the later stage. The conventional floor post-casting zone leaks after the concrete is concealed. The main reasons include the following aspects: 1. The cushion at the bottom of the post-casting zone, under the action of the structural loads on both sides, the cushion is broken, causing the groundwater to flow from the back. The position of the pouring belt seeps out. In the later stage of the post-poured belt concrete concealment process, due to the high water pressure at the bottom, before the final setting of the concrete, the groundwater pressure should be applied to penetrate along the...

AI Technical Summary

Problems solved by technology

[0002] Leakage of the post-casting belt of the basement floor structure has always been a common problem in the quality of construction projects, and it is difficult and costly to maintain in the later period

The post-cast belt of the conventional base plate leaks after the concrete is concealed. The main reasons include the following aspects: 1. The cushion at the bottom of the post-cast belt is broken under the action of the structural load on both sides, causing groundwater to flow from the back Seepage at the position of the pouring belt. In the late post-casting belt concrete concealment process, due to the high water pressure at the bottom, before the final setting of the concrete, please increase the groundwater pressure and seep along the concrete or construction joints, forming a seepage channel, causing Leakage at the post-casting tape position

2. The water-stop steel plate inside the post-casting belt is installed horizontally, and the post-casting belt is installed vertically, resulting in the construction joint concrete under the water-stop steel plate cannot be roughened, which is not conducive to the combination of new and old concrete, burying the hidden danger of construction joint leakage

3. The post-pouring belt is generally long. When the concrete is concealed, it is usually poured at one time. Due to the shrinkage or expansion of the concrete, structural cracks are generated perpendicular to the longitudinal direction of the post-pouring belt, forming a water seepage channel, resulting in leakage

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