Thread rolling
screw
TRS (Thread Rolling Screw)
About
What is TRS (Thread Rolling Screw)?
As a repair method for fatigue cracks in steel bridges, plate repair has been adopted as an effective means.
It is an epoch-making bolt that can be fixed only from one side without making an anchor, whereas a high-strength bolt makes an anchor (bolt head) on the back to stop it.
Features
As a repair method for fatigue cracks in steel bridges, plate repair has been adopted as an effective means.
The reinforcement plate is attached with high strength bolts, but depending on the repair point, the road surface is restricted by traffic, asphalt and concrete are chipped, and the bolt is fixed.After tightening the bolt, it was necessary to recover.
TRS (thread rolling screws) are innovative bolts that can be fixed from only one side without creating an anchor, while high-strength bolts create an anchor (bolt head) on the back.
By adopting this construction method, it is no longer necessary to control traffic on road surfaces or to restore pavement surfaces, reducing construction costs and social losses caused by traffic restrictions. (Our company has been hired for repair work at Meiko Nishi Ohashi Bridge.)
Cut the asphalt, etc., and stop the board.
Traffic restrictions required
The construction period is long and the repair cost is high.
No need to chisel asphalt etc.
No traffic restrictions required
Shorter construction times ・ Very economical
Actual construction status