May 5, 14:00, Guangdong Humen Bridge suspension bridge deck occurred obvious vibration, continuous shaking for nearly 20 hours, the bridge undulation to go wave rolling, alarming. This bridge is Guangzhou link Shenzhen, Zhuhai and other places important transportation hub, inevitably become the focus of attention. But according to experts, Humen Bridge inertial shock will continue.
It is understood that the preliminary judgment of the expert group, Humen Bridge Suspension Bridge this vibration is mainly due to the main reason, along the bridge span side parapet continuous setting of water horse, change the aerodynamic shape of the steel box girder, in the specific wind environmental conditions, resulting in a bridge vortex vibration phenomenon. Large-span suspension bridge in the lower wind speed vortex vibration phenomenon, vibration amplitude is small and not easy to notice, only in special conditions will produce a larger amplitude, does not affect the structural safety of the bridge, but it will affect the sense of driving experience, comfort, easy to induce traffic safety accidents. So it is better to minimize walking on this route to avoid unnecessary accidents.
Wu Mingyuan, a famous bridge expert, revealed in an interview that vortex vibration is a unique phenomenon of large-span bridges with inertia at low wind speeds. As for the Humen Bridge, whose main span is 888 meters long, once the vibration occurs, it takes longer to eliminate the inertia. The bridge is also an important transportation hub, which inevitably affects travel. Well, two months later now, Humen Bridge bridge has basically returned to normal, but in order to ensure that the bridge traffic safety foolproof, Humen Bridge management unit has urgently started on the bridge for a comprehensive inspection, of course, Humen Bridge is still continue to be in the two-way channel closed state, the relevant units will be as soon as possible to check the hope that the earliest possible opening of the channel.
As a connection between Guangzhou Nansha, Dongguan Humen, Guangdong, Hong Kong and Macao Bay Area important cross-river channel, Humen Bridge has been known as the world's busiest high-speed road, so when the Humen Bridge can be normally open to traffic has become a major focus of attention, as of now, the Humen Bridge is still in the comprehensive inspection, the specific time has not yet been determined.