Cast-in-place pipe gallery expansion joint middle-buried type steel edge waterstop structure and construction method

Abstract

The invention discloses a cast-in-place pipe gallery expansion joint middle-buried type steel edge water stop structure and a construction method. The construction method comprises the following stepsthat 1, two full-length steel bars are tightened to the upper side and the lower side of a steel edge through steel edge holes by means of lead wires; 2, a water stop belt is placed in a mounting space reserved in the bottom plate and is aligned with the center line of the expansion joint; 3, the bottom plate embedding angle of the water stop belt is adjusted, and the stress ribs and the positioning ribs as well as the edge clamping ribs and the positioning ribs are welded; 4,the waterstop is fixed on one side of the unpoured concrete by using a supporting rod; 5, the bottom plate and a waterstop belt at the side wall are installed according to a certain turning radius; 6, after construction of the bottom plate is completed, water stops at the side walls and the top plate are sequentially installed; and 7, during construction of the adjacent sections, the step 1 and the step 6 are repeated, and mounting of the waterstop is completed. The waterproof structure is convenient to install,low in cost, safe, reliable, favorable for improving the waterproof performance of the overall structure of the pipe gallery, especially the expansion joint and good in application prospect.

Description

technical field [0001] The invention relates to the technical field of waterproofing and anti-seepage of a large-scale comprehensive pipe gallery, in particular to a structure and a construction method of a buried steel edge waterstop in the expansion joint of a cast-in-place pipe gallery. Background technique [0002] The urban large-scale comprehensive pipe gallery belongs to the underground project, and the waterproof level is second-level. Water leakage and seepage are not allowed. Once there is water leakage, it will have a serious impact on the safe operation of the pipe gallery. After scientific design, the main structure of the pipe gallery can rely on the double guarantee of the waterproof of the concrete itself and the external waterproof membrane to solve the problem of leakage. In order to effectively release shrinkage stress and reduce the risk of structural cracking, the pipe gallery structure usually has an expansion joint every 30m or so. Waterstops are usual...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a structure and construction method of a buried steel edge waterstop in the expansion joint of a cast-in-place pipe gallery in view of the defects in the prior art. Starting from the structural design of the steel edge waterstop itself, combined with Specific installation method, and then solve the leakage of water caused by problems such as inaccurate installation positioning, uneven lines, easy displacement, etc.

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