After dinner, Shu Cheng did not rest, and after turning on the computer, Shu Cheng wrote today's investigation into the form of a report. Novel www.mеng.lā

After all, it has not been completely determined, and the station must choose the two three-story and third-floor buildings of the factory, what Shu Cheng is doing now is just a temporary brief introduction, and let Ren Changhong talk to Li Yifeng.

After it is settled, the area, floor plan, elevation plan, office area and living area layout of the station must be drawn and pasted into the plan.

At the same time, there are reasons for the preferred plan, which should be done in accordance with the specifications of the special temporary plan, and then reported.

It took about an hour for Shu Cheng to finish writing, carefully checked it, and some words and phrases, and after thinking that it was okay, Shu Cheng opened Q and passed the report materials to Ren Changhong.

After all that was done, it wasn't even eight o'clock in the evening.

Shu Cheng got up and went to the next door, ready to contact the technical person.

Next door to Shucheng lived Xu Jin and Wang Guangjian, and when Shucheng knocked on the door and entered, the two happened to be inside, looking at the drawings.

"Brother Shu."

"Shube!"

Seeing Shu Cheng come in, both of them got up and greeted Shu Cheng.

"Sit, I'm fine, I'm just coming to see you." Shu Cheng motioned for the two of them not to be restrained, and then sat on the edge of the bed and asked, "How does it feel about Guangjian's engineering quantity calculation?" What's the problem? ”

Since Xu Jin had done it with himself when he was in the Zetai project department, Shu Cheng asked Wang Guangjian first.

"Most of the reinforcement calculations of pile foundations can be reviewed, that is, some pile foundations, and the reinforcement calculations are not correct." was asked by Shu Cheng, and Wang Guangjian also directly said his question.

"Oh, tell me what's wrong." Shu Cheng asked.

"This pile foundation below 40 meters, the steel bar is no problem, that is, the pile foundation of more than 40 meters, the spiral stirrup is no problem, and the reinforcing rib and the main reinforcement are not matched." Wang Guangjian expressed his doubts.

In fact, Wang Guangjian and Xu Jin graduated from the same class, but Xu Jin came to the high-speed rail project department this time. is the technical director, and Wang Guangjian is still a technician. Both of them are undergraduates, and they became regular in half a year.

For piles such as unconstructed works. It is also normal that the quantity calculation is incorrect.

"I'll take a look at the drawings first." Shucheng Road.

Wang Guangjian handed the drawings to Shu Cheng, and Shu Cheng read the instructions of the drawings first.

As a construction technician, you must develop the habit of reading the drawings and reading the instructions first, whether it is the description at the front of the drawings. Or the instructions in each of the following drawings should be carefully read and understood.

Because in these drawing descriptions, there are many details hidden, some explanations, are in these instructions.

After reading the description and the rebar table at the back, Shu Cheng generally knew how the reinforcement of the pile foundation was calculated.

No matter how long the pile foundation is, it is a 20-meter steel cage, not a steel cage that is long to the end.

The reinforcement cage of the pile foundation is generally divided into three types of reinforcement, main reinforcement, spiral stirrup, and reinforcing rib.

Other than that. At the position of forty meters, there is a difference.

Below 40 meters (excluding 40 meters), there is no acoustic tube, and his detection method is a small chip, and there is no need for an acoustic tube.

The acoustic tube is a kind of hollow tube, which can be overlapped with each other and go straight to the bottom of the pile, and then it is necessary to detect whether the pile meets the design length, and the pipe that passes through the acoustic tube. Put the detected things in, you can detect the entire pile foundation and distinguish which types of piles are there.

This method is generally used in places where the pile foundation exceeds 40 meters. In a small number of special places, where the pile foundation is less than 40 meters, acoustic tubes will also be used.

The small chip is also a method of detecting the pile foundation, which is generally used on the pile foundation below 40 meters.

What Wang Guangjian didn't understand was here, less than 40 meters. The three types of steel bars of the steel cage are all calculated according to the length of 20 meters, which is completely okay.

It can be greater than or equal to 40 meters of pile foundation, because there is an acoustic tube, but the calculation method is different.

Like a pile foundation with a diameter of one meter, three acoustic tubes are needed, and these three acoustic tubes need to be stretched to the end.

When we were working, it was impossible to put the acoustic tube alone into the pile foundation, and it had to be tied to the reinforcement cage. Because the reinforcement cage is only 20 meters, if the pile foundation is 40 meters, there is no reinforcement cage for the other 20 meters, and the three acoustic tubes are closed, which is not firm, and even falls, which can easily cause the acoustic tube to be blocked and bent, affecting the detection of the pile foundation.

Therefore, in order to resolutely solve this problem, we use three main reinforcements with a long length, which are continuously welded on the basis of 20 meters, and the three main reinforcements form an equilateral triangle.

Three long main reinforcements, the length of the lower part of the pile foundation and the acoustic tube is the same length, however, the main reinforcement is still not enough, a single 20-meter steel bar, the acoustic tube is tied to it, or not firm, so it must be like the steel cage, every two meters, set up a reinforcing rib, the role of the reinforcing rib is to make the reinforcement cage more firm.

Therefore, the engineering quantity of Wang Guangjian's pile foundation reinforcement cage is not counted, mainly appearing here.

After reading the drawings, Shu Cheng said: "Guangjian, the pile foundation of more than forty meters, have you considered the acoustic tube?" ”

"Acoustic tubes?" Wang Guangjian looked at Shu Cheng with some doubts, and then looked at Xu Jin.

Obviously, he was not familiar with this thing, after all, before this, Wang Guangjian had never done pile foundation, let alone pile foundation inspection.

"That's right, the acoustic tube, in our engineering unit, generally more than 40 meters of pile foundation, are to install the acoustic tube, and after the pile foundation construction is completed, the third-party testing can use the instrument, through the guò acoustic tube to detect whether there is a problem with the pile foundation." Shu Cheng slowly explained to Wang Guangjian.

Not only Wang Guangjian, but even Xu Jin also listened carefully to Shu Cheng's explanation at this time, Xu Jin didn't know these things, and it was the first time he heard of them, because when he was in the Jersey project department, Xu Jin had never built a pile foundation, let alone touched the acoustic tube.

Shu Cheng saw the two of them listening carefully, and continued to explain: "Because the pile foundation of more than 40 meters needs to be installed with an acoustic tube, and it is long to the end, it is impossible for us to tie it to the steel cage 20 meters above, and more than 20 meters below it, it is directly suspended in the pile foundation. In order to strengthen the acoustic tube, we generally set up three main reinforcements with a long length that extend to the bottom of the pile foundation, and the acoustic tube is also tied together with the three main reinforcements. At the same time, the stiffeners are also arranged, one every two meters, the same can not be less, so that the three acoustic tubes can be firmly fixed, otherwise it is easy to move and destroy. ”

After Shu Cheng finished speaking, he took out a piece of paper and drew what he described, striving to let the two of them understand it at one time.

"Oh, Brother Shu, I seem to understand, what you mean is that I didn't set up an acoustic tube for more than forty meters, and these extra steel bars are actually on the acoustic tube." After Shu Cheng's explanation, Wang Guangjian said.

"That's pretty much what it means, you can calculate it according to my method now, and see if the number of steel bars can be reviewed." Shu Cheng said with a smile.

"Okay." Wang Guangjian responded, and didn't care about Shucheng after speaking, and went directly to the computer to calculate.

Seeing Wang Guangjian go to review, Shu Cheng turned to Xu Jin and said, "Xu, are you encountering any problems?" ”

Last night, Xu Jin was assigned to review the quantity of the subgrade, including the excavation and filling, and at the same time, the total amount of fillers in groups A, B, and C was included in the filling.

There is also the calculation and statistics of the number of cement mixing piles, which Xu Jin is responsible for.

"Brother Shu, I'm still looking at the drawings, I haven't started calculating, I can't understand a lot of things, study for two days first, and if you don't understand it after reading it tomorrow, I'll ask you again." Xu Jindao.

Xu Jin's learning ability is very strong, when he was in the Zetai project department, Shu Cheng felt it, since he said so, Shu Cheng did not force it, let him calculate it himself, and then solve the problem for them when he encounters it.

"Brother Shu, it's really like you are right, according to your method, the engineering quantity of the reinforcement cage has been reviewed, you are too good." Shu Cheng and Xu Jin chatted for a while, and Wang Guangjian suddenly exclaimed, and couldn't help but praise Shu Chengdao.

"What is bullish or not, you just haven't done it, and after you do it, it's easy to calculate. Before looking at the drawings in the future, you must first read the instructions, many things, in fact, are written on the instructions, and many problems you encounter when you look at the drawings can be solved on the drawings. Shu Cheng explained carefully.

What Shu Cheng said is his own construction experience, because as a newcomer to engineering, he is used to ignoring the previous instructions and looking directly at the drawings, thinking that the drawings are the key.

Actually, no, many times, the essence is often in the description.

"Well, that's what I've overlooked." Wang Guangjian was convinced.

"It's okay, if you encounter any problems in the future, you can also go to Minister Hao if I'm not there, he also understands, don't be shy." Shu Cheng said with a smile.

Then, Shu Cheng chatted with the two for a while, then got up and left.

Because it was already half past nine, I originally planned to talk to Hao Hongwei and Liu Tao, but seeing that it was half past nine, Shu Cheng dispelled this idea again, maybe they were resting.

After returning to the room, Shu Cheng first took a bath, and then called Wu Qingling, which was sweet for about twenty minutes.

Wu Qingling usually sleeps after twelve o'clock at night, so Shu Cheng called before twelve o'clock, and she didn't rest, which happened to be in line with Shucheng's habit of night owls.

I have to say that since having a relationship with Wu Qingling, the relationship between the two has undergone substantial changes, and Wu Qingling is obviously more attached to Shucheng.

After hanging up the phone, Shu Cheng did not sleep, but turned on the computer and read the drawings of the ballastless track first, in fact, the ballastless track drawings are very simple.

The ballastless track is divided into two layers, the base board and the track bed board, the width is 2.5 meters, the length is three sizes, and there is a gap of 10 centimeters between the adjacent sizes, which is laid one by one.

The most difficult place of the ballastless track is the control of the elevation and the middle line, which requires the use of a rail inspection trolley, a rail inspection trolley, more than 1.5 million in foreign countries, and five or six hundred thousand even if it is a domestic rail inspection car.

Moreover, the rail inspection trolley has relatively high temperature requirements, and can only be used at night, and the elevation and center line of the rail are debugged and poured early the next morning.

After getting acquainted with the drawings, it was already half past eleven in the evening, Shu Cheng sent a good night to Wu Qingling, and went to bed. (To be continued.) )