The concrete arrived at the construction site at about five o'clock in the afternoon, but because the pump truck was late, it was not until six o'clock that the pouring work was carried out.

Fortunately, there is not much concrete, the tankers are waiting on the side, and the pouring will be completed in half an hour, and the rest of the work is to let the construction level and plaster the surface by itself.

At the same time, when Zhang Tianhu left, the jacking construction was postponed for a day, today because of the reason for pouring concrete, there was no test top, tomorrow the top test, the day after tomorrow began to officially jack the construction.

For the top test, Shu Cheng was still extremely nervous, after all, the steel bars and thickness of the sliding bed board were all designed by him, in case the top does not move the frame culvert, this matter will be a big deal.

Or the cracking of the concrete between the sliding bed slab and the distribution beam will also lead to the failure of the jacking work.

At ten o'clock in the morning, the trial started on time, and the project department did not receive it, and even Wei Jian did not arrive until now, only Zhang Xiaoyun and Shu Cheng.

The top pickaxe is already in place at this time, and a 400t top pick, four on the left and four on the right, are evenly arranged, so that the top pickaxe will be evenly forced, so that the frame will not be offset by uneven force.

"Let's start trying the top, eight pickaxes working together." Zhang Xiaoyun and Shu Cheng both stood in the frame culvert and said to the master who was trying the top.

With a rumbling sound, the engine began to work, and rows of hydraulic hose switches were turned on.

I saw that under the action of hydraulic oil, the stretched out, the top was pressed on the steel plate of the distribution beam, and the steel plate was placed on the distribution beam, in order to increase the stress area, and protect the concrete of the distribution beam from being crushed.

When all the top pickaxes were on the steel plate of the distribution beam, Shu Cheng knew that the top pickaxe was about to exert force, and success or failure was in one fell swoop!

Shu Cheng squatted on the bottom plate of the frame culvert, but his eyes looked at the place where the frame culvert and the sliding bed board met, once it was moved, the frame culvert could be seen moving forward.

"It's moving!"

Suddenly, Zhang Xiaoyun's excited voice sounded in Shu Cheng's ears, Shu Cheng was stunned, and saw that where the frame culvert and the sliding bed board met, a piece of fresh paraffin wax appeared, which was less than five centimeters, obviously the frame culvert was pushed in, revealing the paraffin wax under the frame culvert.

Suddenly, Shu Cheng's nervous mood relaxed, and he moved, and the test pickaxe was successful, indicating that there was no big problem with jacking.

Although the frame was moved, Zhang Xiaoyun did not let the master who controlled the pickaxe stop, he was ready to take a look at the pickaxe after he finished it.

Jacking once, almost jacking 1 meter, after jacking, need to install the force transmission column, continue to carry out the next round of jacking construction, so that the jacking over and over again, install the force transmission column again and again, until the jacking is completed.

After about eight minutes, the length of the top pickaxe reached a limit, indicating that it was no longer possible to jack, so the top pick could only be recycled, and then the force column was connected, and then continued to be jacked.

Subsequently, the master who controlled the top pickaxe recycled it, and after all the eight top picks were recovered, the master who controlled the top pickaxe turned off the jacking equipment and stopped.

As soon as the jacking equipment stopped, Zhang Xiaoyun jumped down the bed board and walked forward, Shu Cheng was stunned for a moment, then he knew what Zhang Xiaoyun was doing, and he followed him.

"Shu, you see it's cracking." Zhang Xiaoyun pointed to the sliding bed.

Shu Cheng looked carefully, and at the junction of the old and new concrete of the sliding bed slab and the distribution beam, there was a crack of about one centimeter.

Because when pouring the sliding bed board at that time, a one-meter sliding bed board was specially set aside and was not poured, and the one-meter sliding bed board left behind was poured together with the distribution beam, so this crack did not appear at the bottom of the distribution beam, but appeared at the place where the sliding bed board and the sliding bed board were handed over.

"It's not a big problem, it can be shaken, which means that the bearing capacity is still good." Shu Cheng commented.

"This also shows that in the process of pouring the sliding bed board and distribution beam in the future, it is better to pour it together, which is more secure." Zhang Xiaoyun said.

Regarding Zhang Xiaoyun's words, Shu Cheng did not deny it, but agreed with it. If Shucheng did not use 22mm steel bars to connect the sliding bed board and distribution beam during pouring, the roof test would not crack and fracture directly, and the roof test would not be successful.

"It's good to add stretches this time, otherwise it is really possible to fail the top attempt!" Shucheng Road.

Since the top test was successful, Shucheng was not worried, when the migrant workers installed the force transmission column, Shucheng looked at the relative elevation with a level, and there was almost no change.

In fact, most of the frame culverts are still on the sliding bed board, and the elevation change is unlikely to be very large, and there will be no warping and planting phenomenon.

"Team Zhang, or I can get a few pickaxes on the top today." Shucheng built yì road.

Anyway, the top test is successful, you can't always stop working, a few more pickaxes today, and you will be able to top a few meters less tomorrow and the day after tomorrow.

"Okay, it doesn't matter anyway, just top it." Zhang Xiaoyun did not object.

As a result, the jacking construction continued, and the whole jacking process was quite smooth, and there was no situation where the force transmission column jumped off.

Because the force transmission column is connected several meters and several meters, in the process of jacking, if the force of the top pickaxe is in the same straight line with the force transmission column, the force transmission column will not be distorted, once the force of the top pickaxe and the force transmission column are offset, the force transmission column will jump off.

At the end of the day, a total of five meters were pushed in.

During this period, Zhang Tianhu and Wei Jian both arrived at the scene halfway, and when they saw that the top test was successful, they didn't say anything, but they just let Shu Chengkong not be able to plant his head.

As for the middle line, Zhang Tianhu even said that it doesn't matter if he is biased, as long as he guarantees that he does not plant his head and warp his head.

The night shift continued, but this time Shu Cheng and Zhang Xiaoyun both came to the construction site, because tonight not only had to put on the soil, but also had to hollow out the soil under the line, and after digging, if the soil was still sand, they had to continue pouring concrete.

So Shu Cheng and Zhang Xiaoyun had to keep an eye on the scene, Liang Shengjian was still in charge of the roadbed filling construction, and Han Zhao also came to the scene, but after staying for less than an hour, he was frozen back, this ghost weather is too cold.

Because they had to go to work the next day, Zhang Xiaoyun and Shu Cheng did not work overtime very late, when the earthwork of the line was excavated, they let the operators get off work, Zhang Xiaoyun and Shu Cheng went back to the station to rest together, leaving Liang Shengjian to continue the night shift.

The next day, the jacking construction continued, and what made Zhang Xiaoyun and Shu Cheng depressed was that during the jacking process, the force transmission column was constantly jumped off, and sometimes the jacking was carried out (one meter), and there were three jumps, which made people collapse.

"Team Zhang, it's really not good, take away the two power transmission pillars that often collapse, and use six pickaxes to push in." In desperation, Shu Cheng built yì road.

"Cheng, let's remove the two pickaxes first!" Zhang Xiaoyun agreed.

The less the top pick, the less the force transmission column needs to be installed, and the six 400t top picks can be jacked completely, you must know that the frame culvert is only 1800t, because the top has been tested, plus the lubrication of the paraffin under the sliding bed board, the real effort spent, at most and 1800t is about the same, or even less, six 400t top picks, can meet the requirements.

In the case of reducing the two jackaxes, the jacking construction became normal, which made Shu Cheng and others breathe a sigh of relief.

At the same time, in the construction of jacking, the excavator is still excavating the earthwork under the line, but the result is still a little unexpected for Shucheng, the earthwork below the line, no sand layer is seen, it is hard soil, and even close to the elevation of 50 centimeters, it is still this kind of soil, so that the line can be completely without pouring concrete, and it can be jacked directly.

In this way, a lot of time has been omitted, and it was originally prepared to be completed in six days (including the trial top), but now it can be completed in four days at most, after all, it is a four-strand line, and the top journey is relatively long.

After a busy day, the chief engineer finally completed two-fifths of the jacking, if it weren't for the fact that the transmission column always jumped off in the morning, he would have been able to finish half of the jacking today.

In the process of jacking, there was a relatively large deviation in the middle line, and in the jacking construction, the master who controlled the pickaxe was also regulated according to Shu Cheng's words, and the effect was not ideal.

Fortunately, the frame culvert offset is generally offset to one side, and in general, it is still orthogonal to the line (the frame culvert is perpendicular to the railway), rather than an oblique (not perpendicular).

In the jacking construction, the excavated earthwork was directly used by Boss Xu and filled into the roadbed on the southeast side of the crossing.

At that time, the roadbed of Shangyunzhuang will be filled, and the roadbed on the southwest side of the crossing will remain, and it will be no surprise that the roadbed filling construction can be completed in five days at most.