Water stop device for post-cast strip

By combining precast slabs with tension bars, the problems of leakage in post-cast strips and corrosion of reinforcing bars were solved, achieving efficient waterproofing and structural stability, and reducing construction costs and risks.

CN224412847UActive Publication Date: 2026-06-26GUANGZHOU WATER SUPPLY PROFESSIONAL JIANAN
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Patent Information

Application Number
CN202521620269.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-31
Publication Date
2026-06-26
Estimated Expiration
2035-07-31

AI Technical Summary

Technical Problem

Existing post-pouring strips are prone to cracking during construction due to backfill soil settlement or temperature changes, leading to frequent leaks and steel reinforcement corrosion, which increases construction costs and risks, and requires maintenance during the post-pouring period.

Method used

Precast slabs are sealed to the building structure to form an integral covered post-pouring strip. Combined with tension bars and connecting bars, the structural stability and waterproof performance are enhanced, and the prestressing principle is used to solve the problem of wall cracking.

Benefits of technology

It effectively prevents leakage and steel corrosion, keeps the internal environment of the post-pouring strip clean, reduces maintenance costs and construction risks, and improves construction speed and waterproofing quality.

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Abstract

The utility model provides a waterstop device for a post-cast strip, which comprises a plurality of precast slabs, each precast slab is contacted and sealed with the side surfaces of two buildings, and the plurality of precast slabs are sequentially arranged along the extension direction of the post-cast strip, are hermetically connected into a whole and cover the post-cast strip. According to the post-cast strip, corrosion of steel bars in the post-cast strip caused by leakage and rainfall can be effectively prevented, the internal environment of the post-cast strip is kept clean, the post-cast strip does not need to be maintained, and the maintenance cost and subsequent construction risks are reduced.
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