Walking can cause the bridge to collapse. How is this done?

It's very simple, if many people walk on the bridge at the same time, it is very likely to cause the bridge to collapse. Why? This involves a physical phenomenon, ***vibration. When the energy caused by vibration exceeds the level that the bridge can bear, the bridge will collapse.

There will be well-known misfortunes in history:

First, in 1849, a group of soldiers passed on a 102-meter-long bridge in Angers, France. When they crossed the bridge in neat steps under the commander's dynamic command, the bridge suddenly burst, killing 226 soldiers and passers-by.

Secondly, in 1831, a bridge collapsed when troops were crossing the bridge in unison near Manchester, England.

Thirdly, in 1906, a Soviet cavalry team passed the Aigibit Bridge on the Fontanka River near Petersburg. In order to show off their team to passers-by, the commander ordered the cavalry to They marched forward in unison. Unfortunately, when the cavalry arrived at the center of the bridge, the bridge broke and several sections fell into the river. Later investigation showed that when the cavalry team crossed the bridge, the total weight of the people and their mounts did not exceed the load that could be installed on the bridge. The factors causing these three murders were all due to the violence.

Many areas now have safety warning slogans based on the principle of vibration. In the stairway safety regulations, it is completely prohibited to "walk in unison" on the corridor to cause vibration. , to prevent damage to the concrete floor. In the army, there is also a rule that when crossing a bridge, do not goose-step, and change from goose-step to step-step. Even Chongqing, a large city recognized as China's only "Bridge City", in the province's first mandatory industry standard for bridge maintenance, requires careful and meticulous groups on the bridge to walk or run in unison.

In the past, some news media reported that a teacher encountered a walking group of 60 people crossing a bridge in a park. The teacher calculated on the spot that 60 people walking in unison was equivalent to lifting a 4.2-ton hanging object every 0.478 seconds. Lifting it up and putting it down once every second can easily cause the bridge to vibrate, posing a safety risk. After his suggestion, the three teams that broke out in the park changed their routes and lost their chance. Netizens laugh at themselves, learn physics, and exercise safely.

When too much force is applied, the object will collapse very easily. So, what causes so much energy? When many people walk together on the bridge, the vibration caused is likely to cause such harm. Therefore, walking will also cause the bridge to collapse. If there are too many people on the bridge, take a break before getting on the bridge. Don’t crowd the bridge and allow the bridge to take a break