Kansai Airports

There are many viaducts in the airport-island to ensure smooth traffic conditions. Even if a Great Hanshin-like earthquake occurred, we have secured passenger safety and will be able to keep the airport operating. Kansai Airports has improved its viaducts with anti-earthquake reinforcement.

1. Concrete filling reinforcement for steel bridge piers

By adding concrete inside the steel piers, we have increased the bridge’s ductility. In the case that this mechanism is not enough for a strong earthquake, we have also implemented reinforcements.

2. Installation of displacement limiting device

In the case of bridge damage or destruction, we limited displacement through the installation of a displacement-limiting device.

3. Installation of bridge fall prevention apparatus

In the case of displacement-limiting device failure, and to prevent the collapse of the girder bridge, we have connected the bridge and the pier through a PC cable.

4. Installation of faulting prevention device

In the case of the bridge base being fragmented, we installed a fault-prevention device to secure the road as an emergency route right after an earthquake.