Bridgestone bearings for quake-proof Olympics venues

Tokyo – Bridgestone Corp has supplied seismic isolation bearings for two newly-constructed permanent venues that will host competition during the Olympic and Paralympic Games Tokyo 2020.

Bridgestone provided its “advanced earthquake protection technology” to the Tokyo Aquatics Centre, where swimming, diving and artistic swimming competitions will be held, the company said 18 June.

Additionally, the company has provided the “cutting-edge” bearings to Ariake Arena, where volleyball and wheelchair basketball will be contested for Tokyo 2020.

Seismic isolation bearings are flexible structural supports that isolate a structure from the ground to help reduce the spread of seismic shock and decrease the chance of damage in the event of an earthquake.

The bearings range in size between 600mm and 1800mm diameters. The two new venues, which are set to be completed in 2019, feature a roof seismic isolation structure.

The isolation bearings are installed between the roof and the connecting structures, creating a large, open space in hall- or dome-shaped facilities used for sports or other purposes

Installing the bearings beneath the roof instead of under the foundation of the venue helps lower the burden placed on the roof's structural support elements, according to Bridgestone.

"Bridgestone has been at the forefront of seismic isolation technology for decades," said Tomohiro Kusano, vice president and senior officer, responsible for Diversified Products Solutions Business, Bridgestone Corp.

"Our seismic isolation bearings will help ensure a safe and enjoyable experience for all visitors to these two much-anticipated venues during Tokyo 2020 and for many years to come."

Bridgestone said it would make additional announcement, in the coming weeks, about “the advanced technology and mobility solutions” that it is delivering to support Tokyo 2020 in Japan.

Bridgestone has been developing and manufacturing its seismic isolation technology in Japan since 1984.

The company's seismic isolation bearings are used in various facilities in Japan and around the world, including historic landmarks such as Tokyo Station and Los Angeles City Hall.