The Humen Bridge shakes, just blame the demon wind and water horse?

On May 5th, the Dongguan Humen Bridge has repeatedly shake. The Guangdong Provincial Transportation Group reports: The expert group preliminarily judged that the vibration was mainly due to the continuous setting of the water horses through the bridge across the fence, and the bridge vortex phenomenon was generated under the conditions of a specific air environment.This phenomenon can affect the driving experience and comfort, and it is easy to induce traffic accidents, but it does not affect the safety of the bridge structure. Watching the videos of the fierce shaking of the Humen Bridge, I couldn't help thinking of a lyrics: like a seaweed, seagrass, fluttering with waves, dancing in the waves. At that time, the people driving on the bridge surface, in addition to the feeling of roller coaster, did they also think of more terrible consequences and even the end of life at a moment of fear? The bridge shakes so hugely up and down, and the naked eye is obviously visible. We are scared across the screen. People sitting in the car should not be afraid, it is almost impossible. Like this stab bridge, due to the crosswinds of the bridge, the driver occasionally produces the feeling of the steering wheel, which is normal; however, it is obviously not normal. The Humen Bridge started construction on October 28, 1992, and passed the completion acceptance on April 20, 1999. It has been opened to traffic for more than 20 years.It is said that the typhoon that has experienced large and small has not been dozens of times. This time there is not much wind, why does such an unusual jitter appear? The answer given by netizens is that the bridge is too excited because the fees will be restored the next day.This is of course just a joke, no one will take it seriously; on the contrary, the judgment given by the relevant person in charge of the bridge must be taken seriously. Not to mention the preliminary conclusion of the enterprise, whether the speed is a bit fast, it is inevitable to doubt whether it has been rigorously investigated; at least, the statement that affects the sense of driving experience and comfort may not be appropriate.When you encounter such a thing, you will affect the experience and comfort of driving. Is that terrible scare? The preliminary conclusions that can easily induce traffic accidents, but do not affect the safety of the bridge structure, perhaps to soothe the people's emotions, but in a sense, it seems to give people a sense of eagerness to clarify responsibility. In fact, as long as the survey is rigorous, as long as the conclusion is responsible, people can be persuaded without having to cause panic and other concerns. Public safety cannot shake with the bridge surface. Based on this simple consensus, rigorous investigation is the best Anmin notice at this moment. In July 1940, the Tagar Bridge was opened to traffic, and in just four months, it was destroyed by an inconspicuous breeze.Because the resonance generated by the horizontal wind is the same as the resonance frequency of the bridge itself, the bridge produces a severe jitter, and it collapses. In terms of principle, the huge jitter of the Humen Bridge should be similar to it. It is a Kamen vortex street, which causes the bridge resonance effect.With the advancement of technology, the bridge collapse of the Kamen Vortex Street does not mean that the same thing will happen, but it will not be extraordinary to cause the necessary vigilance. According to the preliminary judgment given by the enterprise, the main scourge is removed, that is, the water horses that are continuously set up along the bridge across the guardrail. In addition, the bridge itself does not mention the possibility of any flaws in design, construction or material.Not to mention whether the water horses are really harmful to the bridge deck. Even if there is a reason, why have no professional judgment before setting up? One phenomenon that is necessary to point out is that a dozen bridge accidents that have occurred in recent years have not been clearly related to the quality of the bridge itself.hellip; Indeed, there may be a lot of direct causes of accidents, but the hidden dangers of the bridge itself are probably the main cause of the accident.Otherwise, it is impossible to explain why the Qianjiang Bridge and Wuhan Yangtze River Bridge, which were built in the 1930s and 1950s, stood under the same external factors.It collapsed without opening traffic? Why the Humen Bridge shakes violently, directly related to public safety, and rigorous investigation can be the most responsible for public safety.Related surveys should be carried out from the perspective of the bridge itself, not just talking about the strange wind of nature and the water horse on the bridge. Welcome to pay attention to my WeChat public account Shu Shengxiang column.