Why did the railroad workers burn the railroad tracks, and what exactly did it do?

<> this question is a bit unreasonable, and it is impossible for ordinary people to enter the high-speed rail, let alone have children playing on the tracks. The workers who repair the railway will also do it in strict accordance with the prescribed maintenance time, so it is impossible for the train to pass without the workers repairing it. If this happens, as the title says, it will not be a matter of children and workers who die.

It will affect the operation plan of the whole line, he hits the rails with a hammer, taking advantage of the principle that sound travels by the medium: If the rails are not connected to the ground or the screws are loose or cracked, then the tone and timbre of the sound will change; But the sound heard by the workers is mainly timbre, Zhu Zhujun said that this problem is caused by a famous problem: train game - there are 6 children playing on a railroad track, one of them is playing on the abandoned railway on the side, and the other 5 children are playing on the moving train track, at this time there is a high-speed train appeared, the children have no time to dodge the long press and whistle, emergency braking, you can't decide who lives or dies, then minimize the loss, Avoid occurrence to the greatest extent and keep the track unchanged.

Zhu Zhujun said that this problem is extended by a famous problem: train game - there are 6 children playing on a railroad track, one of them is playing on the abandoned railway on the side, and the other 5 children are playing on the moving train track, at this time there is a high-speed train appearing, the children have no time to dodge the long press and whistle, emergency braking, you can't decide whose life and death are left and right, then do to minimize losses, avoid occurring to the greatest extent, and keep the track unchanged.

In the case of a truck, the driver changing the track to the problem track is equivalent to going to the road repair worker.

In the end, if it is a bus, it is to commit suicide with a carload of people. Zhu Zhujun said that this problem is extended by a famous problem: train game - there are 6 children playing on a railroad track, one of them is playing on the abandoned railway on the side, and the other 5 children are playing on the moving train track, at this time there is a high-speed train appearing, the children have no time to dodge the long press and whistle, emergency braking, you can't decide whose life and death are left and right, then do to minimize losses, avoid occurring to the greatest extent, and keep the track unchanged.

This is done to increase the toughness of the rails, make them more durable, and avoid rail breakage.

The main purpose of this is to ensure the safety of the railway, but also to ensure the safety of the people of the whole country.

Because in some areas where the weather is colder, the rails can become brittle, and burning the rails can make the rails tougher.

The burning of the railroad track can be due to the change of geological conditions in this place, this place is too cold, and in winter, the heat expands and contracts, and the cold to the railroad track also has problems, so the staff in order to ensure the service life of the rail, every once in a while to burn it, its temperature rises, it will not be affected by the thermal cooling contraction effect, but this is more common in foreign countries, in some northern regions of the United States, the northern regions of Russia,There are many particularly cold places

Now we are vigorously building high-speed rail, and the project maintenance of high-speed rail is much more frequent than that of ordinary railways, because the train running speed of high-speed rail itself is relatively high, and a little problem may cause a big safety accident, so the high-speed rail must be inspected before returning to the stationThe high-speed rail line should also be checked regularly to see if there are any potential safety hazards. The number of ordinary railways has been gradually declining, because many places in our country have been converted to high-speed rail.

It is because of the extremely low temperatures in these places, the rails shrink and even freeze and crack due to the cold, and the railway staff restore the rails by "burning the rails" to ensure the normal operation of railway traffic.

Because some rails will have some defects, burning them with fire can correct some of the problems of the rails.

Because the temperature in these places is extremely low, the rails can shrink or even freeze due to the cold. Therefore, the railway staff will restore the rails by burning the rails to ensure that the railway traffic can operate normally.

Because some rails shrink in the winter, and if there is a problem, they need to be burned with fire.

Generally speaking, as an important railway infrastructure, the materials used in the rails have been professionally tested and tested, and the safety performance is very high. I think it can be analyzed from the following aspects:

First, if the area is located in a high-latitude cold area, and the rails are exposed to low temperatures for a long time, there will be such a phenomenon as thermal expansion and cold contraction. At very low temperatures, the materials used to construct rails will be affected by the temperature and become brittle, which will greatly reduce the service life of the rails. Therefore, railway workers in these areas will regularly burn the rails with fire to raise the overall temperature, so as to reduce the degree of influence of the rails by the effect of thermal expansion and contraction, so as to ensure the use of the rails for a long time and safety.

Since most of the latitudes in our country do not belong to the high-latitude cold regions, there are fewer rails burned by this phenomenon. In some parts of Russia and the northern United States, as in foreign countries, this method is used by railroad workers to maintain railroad tracks in extremely low temperatures.

Second, the reason for the burning of the railroad tracks may be to destroy animals such as termites that have fallen on the sleepers. Sleepers are an important part of the railway, and their materials are mostly wood. Because the wood has good insulation and elasticity, is lighter in weight, and is less affected by the surrounding environment, most of the world's railway sleepers use treated anticorrosive wood.

Wood is a risk of parasites, especially termites. Termites have strong reproduction and strong corrosive power to wood, so in order to prolong the service life of sleepers, railway staff will also carry out regular termite removal work on sleepers. Through some accelerants such as gasoline, the termites that are parasitic under the sleepers are disposed of, so that the sleeper culture will not be damaged by erosion, so as to improve the safety performance of the rails.

Especially in the humid areas of the south and the areas with frequent termite activity, the maintenance work of the railway will have such a work move.

To sum up, every maintenance work carried out by railway workers for the railroad tracks is based on evidence, not a random action, so don't guess at random.

You know, this is for the sake of smelting iron, but also to make the train track particularly strong, so that the train can run smoothly and without danger.

Burning the railroad tracks will extend the tracks, talking about the trouser messenger tracks reconnecting, the tracks will be stronger, the trains will be safer, and there will be no slippage.

I know that it has the meaning of making people sleepy, so that we can avoid the occurrence of traffic accidents and noisy accidents, and we can also improve the toughness of the track, prevent the track from breaking, and improve safety.

Knowing that it can prevent cracks in the rails, reduce potential safety hazards, and use the principle of thermal expansion and cold contraction to make the rails more compatible.

The railroad tracks were burned with Nachang because of the extremely low temperature, the rails contracted and even froze due to the cold, and the railway staff restored the rails by "burning the rails" to ensure the normal operation of railway traffic. The track bears a variety of vertical, transverse and longitudinal static and dynamic loads, and the load is transferred from the rail to the roadbed through the sleeper and the track bed. Through the mechanical theory, the stresses and strains generated by each component of the track under various load and sock stool loading conditions are analyzed and studied, and their bearing capacity and stability are determined.

Track mechanics analyzes the force and deformation of track structure under the action of rolling stock, as well as the influence of track structure diseases on track damage and train operation, so as to provide a basis for designing track structure and formulating track management standards.

At present, China's railway transportation construction uses high-manganese steel rails, and compared with ordinary steel, this material is added more manganese and carbon, the increase of these two elements can increase the hardness and toughness of the rail, is the rail can withstand the daily high pressure of the train and the friction loss of the wheels.

At present, China's railway transportation construction uses high-manganese steel rails, and compared with ordinary steel, this material is added more manganese and carbon, the increase of these two elements can increase the hardness and toughness of the rail, is the rail can withstand the daily high pressure of the train and the friction loss of the wheels.

We all know that trains travel by rails, and all current trains rely on rails to move forward, and there is no maglev track in people's reverie for the time being, that is to say, rails are an indispensable part of the current train operation railway technology.

And if there were railroad tracks near our home when we were young, we would have noticed that the tracks of the train were rusty, and there was no section without rust, and even if we had the chance, we could see that even the newly built train tracks were rusty like this.

And if the steel is rusty, its life will become shorter, and its own rigidity will be reduced, making it very fragile! Why, then, instead of using other metals, such as stainless steel, for the train's tracks, the rails of the train insist on using rusty iron?

It turns out that it is because China's current railway transportation construction uses high-manganese steel rails, and compared with ordinary steel, this material is added more manganese and carbon, the increase of these two elements can increase the hardness and toughness of the rail, and the rail can withstand the daily high pressure of the train and the friction loss of the wheels. The stainless steel mentioned above will be very easy to be damaged due to insufficient resistance and the occurrence of thermal expansion and contraction.

We all know that stainless steel is very resistant to corrosion, but it cannot withstand the high pressure that the rails have to withstand every day and the frictional pressure of the wheels every day. Although this kind of high-manganese steel for rails does not look beautiful on the outside and is rusty, it is still intact on the inside, and it has a good ability to withstand all kinds of high pressure generated during train operation, and the staying power is also very good!

In any case, it is helpful to have some points to make. According to **, Chicago has high temperatures** to around 10 degrees Celsius, and the lowest temperature may only be around 10 degrees Celsius. If this is confirmed, 10 degrees Celsius would break the current record for the highest temperature in the "lowest temperature period on record" of 3 degrees Celsius.

Because the weather is very cold in some places, in winter, the heat expands and contracts, and the cold is so cold that the track also has problems, so in order to ensure the service life of the rail, the staff will use fire to burn it every once in a while, and its temperature will rise, and it will not be affected by the thermal cooling and shrinkage effect.

The railroad tracks are burned by fire because of low temperatures, and the rails shrink or even freeze and crack due to the cold, and the railway staff restore the rails by "burning the rails" to ensure the normal operation of railway traffic.

It is said that in some areas, the rails will shrink and even freeze and crack when exposed to cold, and the rails will be restored by burning the rails and ensuring the normal operation of the railway.