Pin key type connection combination structure for newly-added floor slab and existing wall body

By using a keyed connection structure between the new floor slab and the existing wall, and by combining steel pins and hollow boxes, the problems of large structural damage and excessive self-weight load in the reinforcement of historical buildings were solved, achieving the effect of preserving the architectural style and strengthening the structure.

CN224396115UActive Publication Date: 2026-06-23HEILONGJIANG PROVINCIAL CONSTR ENG GRP CO
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Patent Information

Application Number
CN202521533104.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-22
Publication Date
2026-06-23
Estimated Expiration
2035-07-22

AI Technical Summary

Technical Problem

Existing technologies for reinforcing historical buildings suffer from significant structural damage and excessive self-weight loads, making it difficult to improve the structural load-bearing capacity and seismic performance while protecting the historical building's appearance.

Method used

The new floor slab is connected to the existing wall using a pin-key joint structure. By combining steel pins and hollow boxes, prefabricated components are mass-produced in the factory, making on-site installation simple, forming a stable connection, reducing pressure on the original structure and improving seismic performance.

Benefits of technology

It achieves the protection of the historical building's appearance, reduces the structural weight, improves the load-bearing capacity and seismic performance, and at the same time, the construction is simple and quick, meeting the needs of historical building repair and reinforcement.

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Abstract

The utility model relates to a newly-added floor and existing wall pin key type connection combined structure which comprises a newly-added floor structure and existing building walls, the newly-added floor structure is located among a plurality of existing building walls, and the existing building walls and the newly-added floor structure are connected through steel bar pin keys. A plurality of hollow box bodies are arranged in the newly-added floor slab structure, the newly-added floor slab structure comprises a plurality of ribbed beam steel bars, the ribbed beam steel bars are divided into X-axis beam steel bars and Y-axis beam steel bars, a reserved space is formed between the X-axis beam steel bars and the Y-axis beam steel bars, and the hollow box bodies are installed in the reserved space. A cast-in-place concrete plate body is formed on the outer sides of the ribbed beam steel bars and the hollow box body in a pouring mode. The utility model has the advantages of retaining the style and appearance of the historical building, effectively reducing the dead weight of the structure, reducing the pressure on the original structure, improving the bearing capacity and anti-seismic property of the floor system, and being simple, convenient and quick to construct.
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