基于预应力FRP布的拱桥拱肋自适应加固装置及方法
By using an adaptive reinforcement device to achieve surface contact and angle adjustment between FRP fabric and arch ribs, the problems of bonding interface peeling, stress transfer interruption and prestress loss in existing FRP fabric reinforcement schemes are solved, thereby improving the reinforcement effect and durability of arch bridge ribs and reducing construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Filing Date
- 2026-05-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing FRP (fiberglass reinforced plastic) reinforcement solutions for arch bridges suffer from problems such as bond interface peeling, stress transfer interruption, local stress concentration, and prestress loss, resulting in poor reinforcement effects and high maintenance costs.
An adaptive reinforcement device based on prestressed FRP fabric is adopted. Through the combined design of sliding mechanism, support mechanism and elastic element, the surface contact and angle of FRP fabric and arch rib are adaptively adjusted to ensure that FRP fabric is tightly attached to the lower surface of arch rib and avoid local stress concentration. Prestress is applied by jacking device.
It significantly improves the reinforcement effect and durability of arch bridge ribs, ensures that FRP fabric and arch ribs work together to bear the load, extends the service life of bridges, reduces construction costs and improves the versatility of the device.
Smart Images
Figure CN122215302B_ABST