On June 19, the bridge expert group will continue the on-site investigation of Xihoumen Bridge. In order to ensure the safety of people's travel, the trucks of Zhoushan cross-sea bridge will still be restricted, and drivers are advised to take ferries and other means to pass.
At 2: 001on June 9, 2020, the traffic of Zhoushan sea-crossing bridge was stable and all kinds of vehicles rolled forward. After nearly 25 hours of traffic restrictions due to vortex vibration, Zhoushan sea-crossing bridge was released from the entrance control at 20: 35 on June 19 and resumed normal traffic.
Extended data:
18, June, 19: 54, due to the strong wind, the Xihoumen Bridge experienced vortex vibration. In order to ensure the safety of the bridge and vehicles, Zhoushan Cross-sea Bridge has taken temporary control measures and closed all the entrances and exits of toll stations. It is understood that vortex vibration is a wind-induced vibration phenomenon of long-span bridges at low wind speed. From the point of view of fluid, any nonlinear object, at a certain constant velocity, will alternately produce vortices on both sides of the object leaving the structure surface.
At 23: 46 that night, Zhoushan sea-crossing bridge had recovered to the level before vortex vibration. After consulting bridge experts, the bridge adopted measures to restrict the orderly passage of vehicles: except trucks and dangerous chemicals vehicles, passenger cars and vehicles loaded with fresh agricultural products were allowed to pass, ETC lanes were closed at the entrances of seven toll stations along the line, and vehicles were released every 50 meters in artificial lanes.
People's Daily Online-Zhoushan, Zhejiang: The cross-sea bridge was reopened.
People's Daily Online-Zhoushan, Zhejiang: Current restriction of the cross-sea bridge continues.