A structure with externally prestressed assembled RCS sub-frame reinforcement

By using externally attached prestressed prefabricated RCS subframe reinforcement structure, the problems of long construction period, high maintenance cost and poor matching degree between energy-consuming components and original structural nodes in the reinforcement of existing building structures are solved, achieving efficient and reliable structural reinforcement effect and optimizing stress and deformation mode.

CN122406968APending Publication Date: 2026-07-17NANJING TECH UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING TECH UNIV
Filing Date
2026-06-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing building structure reinforcement technologies suffer from problems such as over-reinforcement of local components, insufficient improvement in overall performance, long construction cycles, high maintenance costs, and poor matching between energy-consuming components and original structural nodes.

Method used

The structure is reinforced by an externally attached prestressed prefabricated RCS subframe. Through the combination of precast steel beams, precast concrete columns, energy dissipation devices and steel sleeves, the prefabricated construction process is used to achieve the overall coordinated work of the structure, enhance the lateral stiffness and energy dissipation capacity, and achieve the self-resetting of the structure through prestressed tendons.

Benefits of technology

It improved construction efficiency and reinforcement quality, optimized the stress and deformation patterns of the structure, realized the centralized transfer of damage and controllable energy consumption, ensured the load-bearing capacity and durability of the structure, and reduced the impact of construction on the original structure.

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Abstract

本发明公开了一种既有结构外附预应力装配式RCS子框架加固的结构,包括固定在待加固的原结构上的外附预应力装配式RCS子框架,其包括预制型钢梁、预制混凝土柱、耗能角钢、摩擦片、钢套筒。所述预制型钢梁、预制混凝土柱、耗能角钢、摩擦片、钢套筒上均预留有连接用的螺栓孔;预制型钢梁与预制混凝土柱通过耗能角钢连接,并且通过预应力筋张拉进行强化固定;梁柱节点处通过耗能角钢以及摩擦片进行双重耗能,摩擦片保证中小震的耗能能力,耗能角钢保证中大震的耗能能力;所述外附框架与主体结构间通过锚固螺栓进行连接。本发明在不影响待加固原结构使用的情况下,大幅提高施工效率及加固质量,提升主体结构的抗震性能。
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