Hanshin Expressway Large-scale Repair Project
Steel Deck Slab:Fatigue Cracking

Fatigue Cracking in Steel Deck Slabs due to Wheel Loads

Where there is a heavy traffic of large vehicles, fatigue cracking occurs in the road floor surface (steel deck slabs) composed of welded steel members.
When repair fails to stop occurrence of new cracks, it is necessary to conduct radical and large-scale repair and raise the level of soundness that satisfies the current standard.