Near-zero-energy-consumption building indoor ground deformation joint airtight construction device

By setting up a multi-layer sealing structure and an active dehumidification mechanism at the expansion joints of the building's interior floor, the problem of reduced air tightness at the expansion joints was solved, achieving the long-term air tightness and stability requirements of near-zero energy buildings.

CN122013897APending Publication Date: 2026-05-12THE SECOND CONSTR OF CHINA CONSTR EIGHTH ENG DIV
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Patent Information

Application Number
CN202610211612.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-13
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

In existing technologies, the airtightness of building interior floor expansion joints is easily affected by water vapor penetration and material deterioration during long-term use, resulting in a decline in airtightness and failing to meet the long-term stable and reliable requirements of near-zero energy buildings.

Method used

An airtight structural device consisting of two layers of waterproof vapor barrier membranes, weather-resistant adhesive, waterproof membrane, and support mechanism, combined with an active dehumidification mechanism, forms a multi-layered sealed structure to adapt to temperature changes and structural deformation, prevent water vapor from penetrating, and enable predictive maintenance through humidity sensors.

Benefits of technology

It significantly improves the airtightness and reliability of expansion joints, extends the service life of waterproof vapor barrier membranes, reduces the possibility of mold and oxidation, and ensures the long-term overall airtightness and stability of buildings.

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Abstract

The invention relates to a near-zero-energy-consumption building indoor ground deformation joint airtight construction device, which relates to the field of building energy conservation, and comprises an insulation board fixedly arranged in a concrete deformation joint; the surface layer plate is fixedly mounted on the concrete structure; the two ends of the waterproof coiled material are fixedly connected with the surface layer plate; the upper bearing assembly comprises first mounting bases and a cover plate, the two first mounting bases are fixedly mounted at the two ends of the waterproof roll correspondingly, the cover plate is arranged between the two first mounting bases in a sliding mode, and the lower bearing assembly is fixedly mounted in a deformation joint below the heat preservation plate; the two sides of the first waterproof vapor-proof film are fixedly mounted between the waterproof coiled material and the concrete structure; the weather-proof sealant is poured into a gap between the surface layer plate and the waterproof coiled material; the fire-retardant belt is fixedly mounted on the lower bearing assembly; the two sides of the second waterproof vapor-proof film are fixedly installed on the lower bearing assembly. The stability and reliability of the building indoor ground airtight structure can be improved.
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