Support-free recyclable steel-wood composite truss laminated slab

By designing a supportless steel-wood composite truss panel and utilizing the bending resistance of the steel-wood composite section, prefabricated buildings that do not require construction support are realized, reducing costs and construction complexity, and improving efficiency and environmental friendliness.

CN224173581UActive Publication Date: 2026-04-28BEIJING VICTORY STAR ARCHITECT & CIVIL ENG DESIGN CO LTD
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Patent Information

Application Number
CN202521036987.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-23
Publication Date
2026-04-28
Estimated Expiration
2035-05-23

AI Technical Summary

Technical Problem

The existing reinforced concrete truss floor decks require supports to be installed on the bottom of the slab during construction, resulting in a messy construction site and high support rental costs, which has become a bottleneck for increasing the cost of prefabricated buildings.

Method used

The steel-wood composite truss panel, which is unsupported and recyclable, consists of a precast panel, internal steel reinforcement, steel-wood composite truss, and composite layer. By optimizing the structural mechanics design and utilizing the bending resistance of the steel-wood composite section, the precast panel and composite layer form an integral whole. The steel-wood composite truss does not require additional support, and the timber can be reused.

Benefits of technology

No construction support is required, which reduces scaffolding rental costs, simplifies construction procedures, improves construction efficiency, reduces construction waste, conforms to the concept of green and environmentally friendly building, and reduces material costs.

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Abstract

The utility model relates to a support-free recyclable steel-wood combined truss laminated slab. The laminated slab is composed of a prefabricated slab, in-slab steel bars, a steel-wood combined truss and a laminated layer. The prefabricated plate is located at the bottom, the in-plate steel bars and the steel-wood combined truss are sequentially arranged above the prefabricated plate, and the laminated layer is poured above the prefabricated plate. Lower chords and web members of the steel-wood combined truss are made of steel bars, upper chords are made of battens, and the bottom faces of the battens are higher than the top face of the concrete-poured laminated layer by a certain distance, so that disassembly is convenient. The bending resistance of the steel-wood combined section is utilized, an under-plate support is omitted, the leasing cost of the scaffold is saved, the wood beams can be repeatedly utilized, and remarkable economic and social benefits are achieved.
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