In the next period of time, Shucheng put all his energy on the transformation of the station.

As for the reinforcement of the K88 bridge, Shucheng also has time to go to a trip, and when the steel bars and formwork are inspected, Shucheng will take the supervisor to the construction site, and at other times, Shucheng is all put on the station reform.

The so-called inspection is to complete a process on site, and it must be qualified by supervision and inspection before entering the next process.

For example, after the reinforcement is tied, it is necessary to pass the guò inspection to see a series of problems such as the number of reinforcement roots, spacing, protective layer, etc., whether it is qualified, and if it is unqualified, it must be rectified, until it is qualified and the supervision agrees, and the formwork can be erected.

The station yard is actually our most common railway station, and the station renovation, as the name suggests, is the transformation of the railway station.

Why should the train station be renovated? The reason is relatively simple.

For example, when this railway was built, it was 30 years ago, and 30 years ago, the number of people near this station was less than 100,000, so the design of this station yard at that time may have been designed for 200,000 people, and a certain amount of space was reserved.

But 30 years have passed, and the people in the vicinity of this station have reached millions of people, or even more, and this station can no longer meet people's needs.

Therefore, this station must be renovated.

For example, 30 years ago, there were a lot of coal resources in this place, and the station was built with these resources in mind, but 30 years later, there are not many coal resources in this place, but the number of people has increased a lot.

There is also this place, 30 years ago, no resources were found, but in the past 30 years, a lot of mineral resources have been discovered, and these resources need to be transported out, and the railway is a good way.

At this time, in order to adapt to the current environment, it is necessary to transform the station, that is, the station.

In any case, there are many reasons, but there is only one reason, that is, this station is not adapted to the surrounding environment now.

What is the general transformation of the station yard?

For example, the station yard renovation of the Jersey Line is 1050 transformation, 1050 refers to the length of 1050 meters, which is the distance between the two insulated joints on the main line in the station yard, which can be about 1050 meters, but cannot be less than 1050 meters.

What is called a positive line, before understanding this word, we must understand a word, the way of stocks, what is the way of stocks.

When we get on the train at the train station, we often hear the conductor say something like this, how many platforms does a certain train stop, please passengers get on the train from the number of platforms, these platforms are a few strands.

For example, platform 1 is 1 strand, and platform 3 is 3 strands.

In the Jersey line, because it is a single line, there is only one main line, and it is generally a two-strand road.

For strands other than the positive line, we call them station lines.

How to distinguish between the main line and the station line, like the Jersey Line is a single line, when the train enters the station, the straight stock road that does not turn, does not pass through the turnout and enters the next strand road, and directly enters the railway station, is the main line.

And what is a turnout?

The turnout is a kind of line connection equipment that enables the rolling stock to transfer from one track to another, which is divided into before the fork, the center of the fork and the back of the fork.

The so-called front and back of the turnout is the front end of the turnout and the last end of the turnout, as for the center of the turnout, according to the different turnout numbers, the distance from the front and back of the turnout is not the same, and it is not the center of the turnout, which is the center of the turnout.

So, what is the role of the turnout?

Because a train can't just run on one track, it always has to turn, for example, if a train is coming in front of it, it has to turn to another track, relying on a switch.

You may not believe it, but the train driver is not at all in control of which lane the train enters, the train turns, and there is no steering wheel on the train at all!

The train goes to that side, which is completely controlled by the station dispatch room, and the guò switch guides the train into the designated track.

The Jersey Line has now been built for more than 40 years, and it cannot meet the requirement of 1050 at all, so the only way to extend the turnouts to both sides of the battlefield is to make the length of the main line meet the requirements of 1050 meters.

Since Haocun is relatively close to the station, he wants to use Haocun Station as a column, as long as this one battlefield is done well, the other battlefields will not be a big problem.

Prior to this, Shu Cheng carefully read the drawings of Haocun Station, and finally found that the station yard renovation of Jersey Station was still very different from the station renovation of other lines.

The first point is that on the drawings of the station change, there is no coordinate of the turnout, only one mileage. Coordinates, like the latitude dimension of our geography, where a longitude is matched by a dimension, and the points on the earth are fixed.

Once there are coordinates, the construction technician can use the very level point to set the center of the turnout, so that the turnout is easy to find.

Now there are no coordinates, and Shucheng has no way to use the total station, which is an instrument for the engineering unit to measure and pay-off.

The second point is that Shucheng found a more cheating thing, because the Jersey line is too old, and there is no way to find even the leveling point, that is, even if the turnout has coordinates, Shucheng can't locate it.

The leveling point, also known as the control point, is usually called the control point, and usually, there are two fixed leveling points, and the given coordinate point can be determined.

After Shu Cheng carefully studied the drawings, he found that although the coordinates of the three stations managed by Wei Jian did not have the coordinates of the turnouts, when the station was changed, one side was generally extended, and the other side remained unchanged.

Either the mileage of the old and new turnouts is given, and you can know that the distance between the centrifugal turnouts of the old turnouts is what is, and the mileage is reduced, which is the distance between the two turnouts, so that you can directly measure the position of the new turnout with a ruler.

What is a mileage? For example, we should be very clear about the highway, a highway, from a www.biquge.info to a destination, if we www.biquge.info the of this highway as 0, we generally write the mileage of this place as K000+000, the www.biquge.info of the Biqu Pavilion starts, extends forward a hundred meters, we write the mileage as K000+100, This is a hundred meters away from the www.biquge.info of Biqu Pavilion.

How about 290 meters from Highway 3? The mileage is K003+290, which means that the distance between this place and the www.biquge.info of Biqu Pavilion is 3290 meters.

The mileage on the railway is similar to this meaning, starting from the www.biquge.info of a railway, it is set to 0, so until the end of the railway, there is a corresponding mileage in every place.

Therefore, if the mileage of an old turnout is given on the drawing, and the mileage of the new turnout is given, because the old turnout is actually stored on the site, we measure the mileage difference between them completely according to the position of the old turnout, and the result obtained is the position of the new turnout.

It's that simple.

This method is the throat on one side, and the mileage of the new and old turnouts is given, so it can be done.

Like Haocun Station, only the mileage of the new turnout is given, but the mileage of the old turnout is not given.

However, at Haocun Station, the stock road only extends in the direction of the large mileage, and the small mileage side is only a changed turnout, but it does not extend forward.

A railway station with two directions, the place close to the railway Biquge www.biquge.info0, we call it the small mileage side, and the place far away from the railway Biquge.info0 www.biquge.info0, we call it the big mileage side.

There are only two strands of road in Haocun, in addition to the main line, there is only one station line, which belongs to the simplest station transformation. On the small mileage side of Haocun Station, the original No. 1 turnout did not move, but the No. 50-12 turnout was transformed into the No. 60-12 turnout.

Turnout No. 50-12, his meaning is, 50kg/m rail, turnout No. 12.

In China, the types of rails are generally divided into four types, 43kg/m, 50kg/m, 60kg/m, 75kg/m, what is the difference between these rails? At the very least, the height of the rail is different, the 43kg/m rail is the shortest, and the 75kg/m rail is the highest, but the general railway, 75 rail is generally rarely used, and the current rail, most of the current rails are 60 rails.

Of course, even the bottom width, head width, and waist thickness of the rails are different from one rail to another.

Haocun station is old, the main line not only has 60 rails, but also 50, 43 rails, not to mention the station line, most of them are 43 rails.

According to the design requirements, the main line must be guaranteed to be 60 rails, as for the station line, where the rails need to be changed, 50 rails must be used, but all 43 rails in the station are not required to be replaced with 50 rails.

No. 50-12 turnout, and No. 60-12 turnout, although it seems that they are all No. 12 turnouts, but the length of this turnout is different, No. 60-12 turnout, obviously longer than No. 50-12 turnout, the distance from the front to the center of the turnout and the center of the turnout to the back of the turnout is also completely different.

At Haocun Station, there are two sets of existing turnouts, and both sets of turnouts are No. 50-12 turnouts. For the other two stations, turnouts Zài 43-9 and 43-12 are still preserved.

After seeing that Haocun Station is only a large mileage side extension, and the small mileage of the No. 50-12 turnout does not move forward, Shucheng knows how this station has been transformed.

First of all, I would like to thank the book friends and book friends 150319, Blue Moon Wind Dance, Watch Tomorrow, Forever Red Sun and Li Cheng for their rewards, and the brothers and sisters who have praised this book. In addition, I have been writing this chapter for a long time, and I am always trying to find a way to make it understandable to readers who are not in engineering units, but when I write and write, I find that there is too much knowledge about station transformation, and it is not good if I don't explain it, and once I explain it, it is completely confusing. After all, it is difficult to accept so much fresh knowledge at one time, and readers who are not engineering units will just read it, and readers of engineering units will also want to point out that writing novels is not like work, and sometimes it is difficult to cover everything.

In the end, I will write more details about the knowledge of station reform, because when I first came into contact with station reform, I didn't understand anything, and Baidu didn't know anything, I wrote these chapters, just to see if I could help everyone.

Thank you again for your support, xh118