Embroidery Needle River Bridge prestressed carbon plate reinforc

Project Overview

During the regular inspection of Fenghu River Bridge in Fenghuang Expressway, cracks were found in many structures. Therefore, under the actual operation load, the flexural capacity of box girder was insufficient, then reinforced with HM prestressed carbon fiber reinforced polymer（CFRP）laminate system to improve the original structure ,  repair the cracks, improve the bearing capacity and durability of the bridge.

Reinforcement time

2015 year

Reinforcement method

HM prestressed carbon fiber reinforced polymer（CFRP）laminate system

Material selection

HM prestressed carbon fiber reinforced polymer（CFRP）laminate 

Construction technology

1. location and paying off

2. polish

3. drilling hole

4. grooving

5. repairing and leveling

6. planting anchor

7. installing bounding box

8. installing anchor block

9. fixing carbon fiber laminate

10. fixing jack and high strength anchor bolt

11. prestretching

12. applying epoxy resin 

13. prestretching

14. removing the thread rod

15. tablet fixing 

16. finished product protection