一种混凝土T梁加固构造
By arranging channel steel plates at an incline on the concrete T-beam and combining them with the reinforcement structure of the UHPC layer, the problem of unreliability of traditional connection methods is solved, the bending and shear bearing capacity is improved, and self-repair is achieved, thereby enhancing durability and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN ROAD & BRIDGE SURVEY & DESIGN INSTITUTE CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional connection methods between steel strips and concrete T-beams cannot guarantee the reliability of interface bonding, and the durability of the adhesive is at risk of aging, which affects the reliability of the reinforcement.
Inclined shear-resistant and bending-resistant channel steel plates are used, combined with a UHPC layer, and fixed to the web of the T-beam with anchor bolts and nuts. An anti-corrosion coating is applied to the surface of the channel steel plates to form a combined load-bearing component, which enhances the reliability of the connection.
It improves the bending and shear bearing capacity of concrete T-beams, resists cracks caused by bending moment and shear force after long-term use, and the self-compacting characteristics of the UHPC layer enable self-repair, enhancing the durability and reliability of the reinforced structure.
Smart Images
Figure CN224514081U_ABST
Abstract
Claims
1. A concrete T-beam strengthening construction, characterised in that: The structure includes shear reinforcement at the support points and bending reinforcement at mid-span. The shear reinforcement at the support points includes several shear-resistant channel steel plates arranged obliquely along the length of the web of the T-beam. Adjacent groups of shear-resistant channel steel plates are fixedly connected by gusset plates. The shear-resistant channel steel plates are fixed to the web of the T-beam, and their grooves cooperate with the web of the T-beam to form a first filling space. The first filling space is filled with a shear-resistant UHPC layer. The bending reinforcement at mid-span includes a bending-resistant channel steel plate fixed to the bottom of the horseshoe-shaped end of the web of the T-beam, and its grooves cooperate with the bottom of the horseshoe-shaped end of the web of the T-beam to form a second filling space. The second filling space is filled with a bending-resistant UHPC layer.
2. A concrete T-beam reinforcement construction as claimed in claim 1, characterized in that: The oblique angle between the channel steel plate in the shear-resistant zone and the side of the web of the T-beam is 30°-60°.
3. A concrete T-beam reinforcement construction as defined in claim 1, characterized in that: Several first anchor bolts are fixedly implanted on the side of the web of the T-beam. The first anchor bolts pass through the channel steel plate of the shear-resistant region and are locked and fixed to the side of the web of the T-beam by the first nut. Several first studs are also implanted between the channel steel plate of the shear-resistant region and the UHPC layer of the shear-resistant region.
4. A concrete T-beam reinforcement construction as defined in claim 1, characterized in that: Several second anchor bolts are fixedly implanted at the bottom of the horseshoe-shaped web of the T-beam. The second anchor bolts pass through the channel steel plate of the bending region and are locked and fixed to the bottom of the horseshoe-shaped web of the T-beam by the cooperation of the second nut. Several second studs are also implanted between the channel steel plate of the bending region and the bending UHPC layer.
5. A concrete T-beam reinforcement construction as defined in claim 1, wherein: Both the shear-resistant and bending-resistant channel steel plates are made of n-shaped channel steel plates.
6. A concrete T-beam reinforcement construction as defined in claim 1, wherein: The thickness of the channel steel plate in the shear-resistant zone is 6-10mm, the width is 300-500mm, and the height is 50-100mm.
7. A concrete T-beam reinforcement construction as defined in claim 1, characterized in that: The thickness of the channel steel plate in the bending zone is 6-10mm, the width is the sum of the width of the bottom of the horseshoe end of the concrete T-beam web, the thickness of the UHPC layer, and the thickness of the channel steel plate in the bending zone, and the height is 100-150mm.
8. A concrete T-beam reinforcement construction as defined in claim 1, wherein: The thickness of both the shear-resistant UHPC layer and the bending-resistant UHPC layer is 50-100 mm.
9. A concrete T-beam reinforcement construction as defined in claim 1, wherein: The outer surfaces of both the shear-resistant and bending-resistant channel steel plates are coated with an anti-corrosion coating.