This is an external cable reinforcement method for existing bridges that has excellent durability and workability, and also has the function of re-tensioning and releasing tension.
- repair
- Road companies and local governments
- Conservation and maintenance company
- construction company
- Construction consulting company
- Efficiency and labor savings
- Longer lifespan
overview
This is an external cable reinforcement method that is highly durable and easy to construct, and can be applied to various types of bridges.
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Features
- We have adopted the concept of multi-layer protection for the conventional cable body "PC steel stranded wire + anti-corrosion wax + high-density polyethylene", and have changed to "galvanized PC steel stranded wire + anti-rust wax + high-density polyethylene" specifications, or " ECF strand + high-density polyethylene" has achieved high corrosion resistance.
- The fixing device and the metal accessories are treated with a composite coating (DISGO treatment) to improve durability, and the space around the wedge that secures the cable is filled with polybutadiene rubber to ensure a completely sealed condition.
- By combining the wedge method and ring nut method, we have achieved both a compact anchoring end and a tension load adjustment mechanism. This makes it possible to re-tension and release the tension, making it possible to perform standby reinforcement and cable replacement work.
- By adopting a "two-stage anchor plate" with two bearing surfaces, the concrete anchor has been made more compact. In addition, the wedge method and nut method can be installed using a single dedicated jack, making it easier to install in the narrow space at the end of the girder. This makes it possible to install the concrete anchor closer to the end of the girder than with conventional construction methods, allowing the reinforced section to be extended.
