"Minister Shu, it shouldn't be a problem, because the drill pipe and the mast are not parallel, and with my construction experience, it can be seen.|For every two people who look at romance, there is an account that has registered a small ° say ° network. ◢

"It's okay, let's install the drill first, let's test it, what does the master think." Shu Cheng smiled slightly and said in a consultative tone.

For this kind of on-site operation of the individual, Shu Cheng is still very admirable, although they have not read much books, but their construction experience is very rich, sometimes, the sound of the drilling rig, you can know that there is a fault in that part, which is the ability of the project department technicians can not be compared.

"Yes, since Minister Shu said it, let's give it a try." Seeing that Shu Cheng was so modest, the operating uncle was also very cheerful, so he began to get busy.

The process of installation was very complicated, during which Lao Huang, the boss of the construction team, drove his sullen Mercedes-Benz to the construction site.

Ren Changhong directly explained the reason to Lao Huang, let Lao Huang deal with it himself, and finally Lao Huang called the rotary drilling drill manufacturer and told the manufacturer about the situation, the manufacturer responded to send someone to come and see, although this rotary drilling drill is new, but who knows if the drill pipe is not straight caused by on-site construction?

In this way, the rotary drilling drill will not work for a few days, but fortunately, Lao Huang will enter two rotary drilling drills in the past two days, and the impact on the construction progress is not very large, Ren Changhong and others can also accept it.

However, in this case, there is no way to do it, it is completely a malfunction.

The problem of rotary drilling with non-perpendicular drill pipes was solved, and the drilling rig that was not so strict was also installed, and then started with a rumbling sound.

To judge whether the drill pipe and the mast are parallel, as long as the gap between the drill pipe and the mast is checked during the drilling process, if the gap is large and small, alternately, you can judge that the drill pipe and the mast are not parallel.

But after drilling for five minutes, Shu Cheng and the others didn't find out what caused this drilling rig to lead to Zì's super square.

Know the evening. didn't discuss a result, Ren Changhong directly said a word, let the drilling rig start construction, and no longer care about super-square things.

Because this drilling rig is about seven percent over-square. In places where the geology is relatively poor, there are more than 5 percent of the square, which is two percentage points more than the poor geology, which is quite acceptable.

Another reason is that Lao Huang is about to come in two rotary drilling drills. These two rotary drilling drills were transported after the last construction site was finished, the geological conditions of the previous construction site were similar to this side, and the super side was only two percent, Ren Changhong wanted to see how the two rotary drilling drills were super square.

Since Ren Changhong said so, Shu Cheng couldn't help it, mainly because Shu Cheng couldn't find the reason.

Two days later, Lao Huang brought two more rotary drills, and the construction began the next day.

But in the pouring process, the excess amount of these two rotary drilling drills is actually between 5% and 7%. It suddenly made people confused.

In other words, these two drilling rigs are similar to the previous super square drilling rig, and in the end, Shu Cheng asked the on-site technician to control the length of the pile head, which was originally one meter, and now it is guaranteed that there is a fifty cm pile head, which is equivalent to a reduction of fifty centimeters of concrete.

In this way, the concrete of the super square is barely controlled within five percent, which barely meets the requirements.

However, in this case, the control of the pile head and the control of the hanging bar are very important.

Hanging bars. To put it bluntly, it is two steel bars hanging on the steel cage, which are used to control the elevation of the steel bar of the pile foundation.

At present, the methods used at the construction site are all to use steel bars to make zuò. After pouring and breaking the pile heads, these rebars are discarded, and some of them are sold by individuals on site, which is equivalent to waste.

In the previous life, there was an engineering bureau that designed a reused suspension bar, which was also made of steel bars. Just by adding some equipment, you can control the length of the hanging ribs at will, and the stability is also good.

After Shucheng Baidu, I didn't find any information about the reuse of hanging bars, and I couldn't help but think that I would design one myself, and when the time comes, I can report it to the company and let the company help get a national patent!

You know, a hanging bar is calculated by 2.5 meters, a pile foundation is five meters, the total amount of pile foundation is calculated by 2400, the use of steel bars with a diameter of 12, steel bars are calculated according to a ton of 2900 (time and now are different), calculated to save more than 30,000 yuan, and the on-site construction is also very convenient.

So, Shu Cheng began to design reusable hanging bars according to the memories of his previous life!

In the afternoon, Hao Hongwei called Shucheng again.

"Magnificent."

"Brother Shu, we have poured 20 square meters of concrete on the site, and half of it has not been poured, but the concrete tanker has not come to the site until now, and more than an hour has passed." Hao Hongwei said anxiously.

For pile foundation construction, although Hao Hongwei is the deputy minister of the technical department, but before this only did the percussion drill, did not do the rotary drilling, the rotary drilling problems do not know how to deal with, under normal circumstances, Hao Hongwei is to ask Shucheng.

"It's been an hour, why is it so slow." Shucheng Road.

"Yes, I'm worried that the concrete will solidify, and it will be troublesome if the conduit can't be pulled out." Hao Hongwei said worriedly.

Because the conduit is inserted into the concrete before it is poured, once the concrete behind it cannot keep up, the poured concrete is likely to be initially set, and after a long time, it is indeed possible that the conduit cannot be pulled out.

"Did you rush the mixing plant?" Shu Cheng asked.

"Urgently, but the mixing plant said that the mixer was broken, and there was still half an hour to repair it, what should I do now, in case the concrete solidifies, and the conduit can't be pulled out, it will be troublesome." Hao Hongwei said.

"It's okay, you ask the migrant worker to turn the lower catheter and gently lift it down at the same time to make sure the conduit and concrete are solidified together!" Shu Cheng didn't think about it, so he paid attention to Hao Hongwei, and then said: "I'll contact the mixing plant here and see what's going on." ”

"Okay, Brother Shu." Hao Hongwei said.

After hanging up the phone, Shu Cheng made another call to the mixing plant, and got the news that the mixer was indeed broken, and the mixing plant could not be helped, and it might not be repaired in an hour.

Hearing this answer, Shu Cheng frowned slightly, and he directly dialed Ren Changhong's phone, because after an hour, the mixer was repaired, and when the concrete arrived at the site, two hours would not be enough.

For such a long time, even if the conduit can be pulled out, the quality of the pile foundation will not work, so Shucheng must contact Ren Changhong to see if he can transfer some concrete from other places to finish pouring the pile foundation first.

After Ren Changhong got the news, he directly called Hu Jin, the Minister of Material, and asked him to contact the commercial mixing plant immediately.

At seven o'clock in the evening, Hao Hongwei called Shu Cheng again.

"Brother Shu, the pouring of this pile foundation has been completed." Hao Hongwei said.

"It's good if it's poured, the concrete is enough!" Shu Cheng asked.

"Brother Shu, it's strange to say, at the beginning, twenty square meters were poured, according to the design, it is enough to have twenty square meters, but you also know that this pile foundation is super square, originally I was going to ask for twenty-two squares, but the mixing plant first sent twenty squares, which is exactly the design quantity, and after the pile foundation was poured, it actually reached the elevation, and the concrete was enough." Hao Hongwei said with his doubts.

"Enough, not overpowered?"

"No, but the pile head is still about fifty centimeters, which is equivalent to half a square of supersquare, compared to the previous supersquare a few squares, this pile foundation is no different from not supersquare." Hao Hongwei explained.

Hearing Hao Hongwei's words, Shu Cheng couldn't help frowning, why didn't this pile foundation go beyond the square? It stands to reason that the drilling process is the same, and the geology is the same, so there is no difference.

After hanging up the phone, Shu Cheng pondered for a moment, and suddenly, a bold guess appeared in Shu Cheng's mind!

The only difference between this pile foundation and its exceedance is that the concrete used in other pile foundations is supplied by the mixing plant of the project department, while half of this pile foundation is supplied by the mixing plant, and the other half is commercial concrete, which is bought outside.

That's the difference!

Why is the concrete of the mixing plant of the project department super square, but the commercial concrete outside is not too square?

It is difficult to make the concrete from the mixing plant of the project department, and it has done tricks and feet in terms of quantity.

Thinking of this problem, the more Shu Cheng thought about it, the more strange he felt, and when he entered the early stage, Li Yunqiang once told Ren Changhong that he would build a mixing plant for the project department for free.

But Ren Changhong didn't agree immediately, and as for what happened later, Shu Cheng didn't know. However, one thing is certain, that is, the technician who supplies concrete is indeed Li Yunqiang's person!

So what Li Yunqiang said in the early stage was to build a mixing plant for the project department for free, which may be true later, so it can also be understood why each pile foundation is super square.

Because when the mixing plant supplies concrete, the concrete batching plant does not use the amount of concrete supplied to the other side, so the final result is that each pile foundation is over-square.

Otherwise, how can Li Yunqiang make money, you must know that the cost of building a mixing plant for the project department for free is millions.

Although the amount of concrete of a pile foundation is not much, more than 2,000 can be accumulated, plus the cushion cap, pier body, stepping stone, bridge deck system, crash wall, ballastless track, this amount of concrete is unimaginable.

In this way, Li Yunqiang can not only earn back the money for the project department to build a mixing plant for free, but also earn millions more.

In the end, it is the company that loses, and in the whole process, no one can say what went wrong, anyway, it is the loser.

This also explains why, several rotary drills are super square at the same time, but there is no problem with rotary drills.

It's not a rotary drill at all, it's a trick on the side of the plant. Shu Cheng even suspected that Li Yifeng and Ren Changhong had known about these things for a long time, and they went to the scene to investigate, just going through the motions. (To be continued.) )