Chapter 19 Steel Pipe Pile Ningde Revenge

Duan Jingzhong built a bridge when he was in office, and he also had some research on building bridges, and he made up his mind to build a bridge here so quickly, and asked puzzledly: "Mr. Zhang, the water depth here is eight meters, how to build this bridge pier, and you still said that you want to build a bridge with a span of 50 meters?" ”

Zhang Zhimu knew that they couldn't understand it yet, but the span of fifty meters was simply pediatric in his previous life, and he said with a smile: "We will use the method of piling to build bridge piers this time." ”

"During the Qin Dynasty, in front of the north gate of Xi'an, the Weishui Bridge was built on the Weishui River, and the piles were driven into the bottom of the river to make piers, and the bridges built are still in use today. But we only have a three-meter layer of mud and sand at the bottom of the river, and there are stones underneath, so it is unstable to drive such piles? Not to mention the construction of a bridge with a span of 50 meters. ”

Li Yunhe didn't speak, he was different from Duan Jingzhong, he knew that the reason why Zhang Zhimu said this, there was a way to solve this matter.

Zhang Zhimu looked at Duan Jingzhong and said, "If we drive the pile into the bedrock, will it be stable?" ”

"Driving the stakes into the bedrock?" Duan Jingzhong looked at Zhang Zhimu in surprise.

"Well, you'd better listen to me." Zhang Zhimu said to Li Yunhe: "Yunhe, you also need to build a large-caliber drilling rig, with an outer diameter of 200 mm. Once we had chosen the location of the piers, we used a large-diameter drill rig to drill the hole, no matter how deep the bedrock was, to a depth of five meters, and then inserted a steel pipe with an outer diameter slightly smaller than 200 mm and a wall thickness of 20 mm. Of course, after this hole is drilled, some sediment will be entered, and then the pipe can be drilled into the hole with the help of a steam hammer. Keep in mind that the front section of this steel pipe needs to be drilled around the perimeter for about a meter. After the pipe is entered, a rubber pipe is used to extend from the hole in the pipe to the bottom of the pipe, and the mud in the pipe is pumped out with a mud pump. Then extend the rubber pipe from the mouth of the pipe to the bottom of the pipe, and drive the quick-setting cement into the pipe. Then quickly pressurize the nozzle, then the quick-setting cement will be pressed out of the small hole at the bottom of the pipe to fill the gap between the outer diameter of the pipe and the bedrock hole wall, this process must be fast, because the quick-setting cement will solidify in a few minutes. We can build a 10x5 array at intervals of one meter for each pier, how much force can be borne by pouring cement into such steel pipe piles? ”

Zhang Zhimu was talking as he drew a schematic diagram for the two of them with a pencil.

"Oh my God, fifty steel pillars, it's okay to drive ten rollers." Li Yunhe said.

Duan Jingzhong was obviously shocked by what Zhang Zhimu said, and said: "I estimate that Li Yunhe can solve the drilling rig, and there is no big problem with the steel pipe, but we don't have the cement that you said can solidify in a few minutes?" Nowadays, cement health care takes seven days. ”

"I'll take care of the quick-setting cement." Zhang Zhimu said, "The cement in these steel pipes is finished. We can weld a steel platform on top of the steel pipes, so that these steel pipes are evenly stressed. Then cement piers are built on this steel platform, and between the two cement piers, two steel round arches are erected. This not only increases the height of the bridge deck, but also allows it to easily span 50 meters. Our bridge deck is made of steel box girders, and the bridge deck is between the two round arches, and the middle of the round arch passes. As he spoke, Zhang Zhimu drew another picture for them.

Pointing to the picture, Zhang Zhimu said: "We can hang some steel cables on the round arch to hang these welded box girder bridge decks, there is no steel cable hanging part between the two round arches, we use the method of support." ”

Zhang Zhimu's bold idea had obviously made Duan Jingzhong and Li Yunhe take a breath of cool air.

Zhang Zhimu asked, "How is it?" Technically possible, right? ”

Li Yunhe's eyes didn't leave the few sketches drawn by Zhang Zhimu, nodded and said, "It is technically feasible. However, the difficulty of construction may not be ordinary. There may be more problems to solve than you draw on paper. Let's talk about this 50-meter span steel arch, how do we use to hang it. ”

"We'll figure out how much it weighs later. Let's see if we can weld it and then hang it? However, after our piers are built, we can build several tower cranes on the piers to complete this work. When the time comes, let's study the specific issues in detail. Zhang Zhimu said, "This plan is only a rough plan, and you have to ask Lu Bingyi to organize people to help calculate the specific design, such as how heavy the round steel arch itself is?" How much weight can they hold? How much force is on the piers? What is the horizontal thrust of an arch bridge? Because the problem with arch bridges is that gravity is turned into gravity and horizontal thrust. These need to be calculated, and I can only give you a solution. I think we should ask Mr. Lu Bingyi to participate in the design of this bridge as soon as possible, otherwise they will soon have to design the Hutuo River dam, and then they may not have time. After we finished designing the bridge, we could just in time for the cement from the kiln cement plant, and then we could start building the bridge. ”

Li Yunhe said: "At that time, Lu Qi can withdraw, and we will let Lu Qi be in charge of the technical person in charge of this bridge." ”

"I originally wanted Lu Qi to participate in the construction of the Hutuo River dam. But the project over there is not so fast, so it's okay to let him be in charge first. Zhang Zhimu said, "To be honest with the two of you, we built this bridge to train the team, and our goal should be the Yellow River Bridge and the Yangtze River Bridge." ”

"Oh my God, Mr. Zhang is really ambitious!" Duan Jingzhong exclaimed.

"By Mr. Zhang's side, I have become accustomed to witnessing these miracles." Li Yunhe also said sincerely.

Suddenly, Li Yunhe asked, "Is it for the sake of building the bridge, you have already started to prepare?" I think so. ”

"You're right, we need to use roads and railways to connect all the places in the Ming Dynasty, not only is it convenient for everyone to travel, only then will the era of large-scale industrialization come, so that our national strength can become stronger, and our country will be more cohesive, even if someone wants to split, they can't do it. Let's talk about Genghis Khan back then, he laid down such a big country, and our entire Ming Dynasty was one of his four khanates, why he couldn't rule, of course, there were many reasons. However, it cannot be ruled out that there are reasons why the means of governance cannot meet the requirements, such as means of communication, means of transportation, etc., which cannot meet the needs of such a large national rule. There are also reasons why we have not been able to attack for a long time, and there are also reasons why our technical means are not ready. ”

Duan Jingzhong heard Zhang Zhimu say this for the first time, and this time he completely admired Zhang Zhimu. He said: "Mr. Zhang, I just put my life on the line, and I will do my best to build this bridge." ”

"I don't agree with the way you come up and play desperately. This is our first starting bridge, and if you build such a bridge, you will be lost, and who will do the rest of the work? I always feel that people come first, we have to do things well, and people have to live well. Everything has to go according to plan. Zhang Zhimu said.

Duan Jingzhong was even more moved, no one had ever cared so sincerely about his subordinates before. Even the hearts are all official articles, and no one takes them seriously. But Zhang Zhimu is different, what he cares about is real.

Li Yunhe brought a few sketches drawn by Zhang Zhimu and said, "I took these pictures, and I will go and study them with Mr. Lu immediately." ”

"Okay! Go ahead, I'll also go to the command center to see if they have made contact with General Ningde? Zhang Zhimu said as he got up to see them off.

General Ningde is really not a reckless man as Li Yunhe said. Getting the news that the reclamation site was attacked, Ning De's heart tightened. He hurriedly led people to the scene on horseback. On the way, Ningde judged that this must be the work of the Dashun army on the other side. Because after the governance of the kiln gang, there are no bandits here who can become a climate. Although the Mongols of Prince Tori were not satisfied with the occupation of Baotou and Dongshengzhou by the Yaogang people, they also understood that only the Yaogang people were safe here, and those Chahar people did not dare to fight them. So they won't do it.

When he arrived at the scene, Ningde was even more sure that this was the Dashun army on the other side of the river. There are a lot of weapons left here, and at first glance it is Dashun's. Judging from the scene of the scene, there had been a fierce fight, it was clear that they had been attacked, and there was no trace of musket fire here. Because this is an independent garrison, there are a few veterans in charge, at least four or five muskets, but there is no trace of the muskets being fired. The chaotic scene shows that they were all killed by someone who suddenly burst into the room. Although they put up fierce resistance, in the face of the elite soldiers, they had no chance of winning without preparation, and none of them died here.

This scene made Ning De's blood rush directly to his head, and he gathered two cavalry regiments and crossed the river on ice to take revenge.

When the Yellow River was not frozen, the soldiers of the Dashun Army on the other side of the river got along well with the Yaogang people across the river. Because the Dashun army did not have many troops on the other side of the river, their defense focus was on the line of the Great Wall (Ming Great Wall), the west bank of the Yellow River opposite the meandering crossing crossed the southern edge of the Mu Us Desert to Ningxia Fu on the east bank of the Yellow River on the other side, where the Great Wall was more than 1,700 kilometers. Even if they arrange ten people for one kilometer, they also need more than 17,000 people. Therefore, the main force of the Dashun army was on the front line of the Great Wall, and the number of soldiers on the Great Wall was not large, and they mainly collected some silver from passing merchants at various ferries on the Yellow River. But their life was very hard, and they couldn't get enough to eat, let alone military pay. They had heard from the merchants who had passed by that the Yaogang people had lived a very good life here, so they were both envious and jealous. Before the Chinese New Year, some of their officers and men saw that there was nothing to do for the New Year, and they moved their hearts and minds. Through understanding, they know that the kiln gang people have a lot of independent outside the reclamation point, there will be some people left there in winter, but there are not many people, but the food is sufficient, it is said that although it is winter, but their meat and vegetarian are all, it is simply a fat sheep. That night, more than 100 of them rode horses, their sheepskin coats and fur facing outward, and stepped across the ice of the Yellow River to the outside of this reclamation site. Because the weather was too cold, the people in the reclamation site felt that it was freezing in such a desolate place, and it was impossible for anyone to come here. They have no guard.

As a result, the Dashun army suddenly rushed into their rooms, and by the time they reacted, it was too late. Weak resistance, where is the opponent of these soldiers of the Great Shun Army. They didn't fulfill their dream of cultivating land and making a fortune, and they were all in a different place.

The Dashun army was simply stunned after killing people, and a lot of food and materials were stored here, because it was here to prepare for a large number of immigrants next year. The horses and carts here are just right for them. Grain and other material supplies were taken away by carts, and many cattle and sheep were also driven across the river by them.

There were more than 1,000 people in their camp, which was a fat year. At first, they were also afraid that they would be retaliated against by the kiln gang people after the matter was exposed, so they did not dare to relax their vigilance when they enjoyed this good thing for the New Year. But after the New Year, they didn't notice any movement, and they slowly relaxed. They think it's over.

But what they don't know is that this is because the kiln people found out about this matter late, and the debts owed always have to be repaid, but sooner or later.

Ningde was a professional soldier after all, and he knew the distribution of troops on the other side of the river. He was very psychologically numerical with two regiments of cavalry. Because there were only more than 1,000 people in the camp garrisoned by the Dashun army on the opposite side, he took two regiments of nearly 3,000 cavalry, which was more than enough to deal with them.

After crossing the Yellow River, the south bank is also an empty snow field, and the wind blows the fine snow, and it hurts to whip people and horses. Ningde ordered everyone to put on white snow disguises. The scouts sent out came back and reported that there was no reaction in the camp of the Dashun army, and that they had not yet noticed us coming.

Ningde said: "Good! The rabbit cubs played sneak attack on Lao Tzu, and Lao Tzu also told them what a sneak attack was. ”

Ning De arranged the large group of men and horses into a sheltered ditch, and he took a few people to the back of a mound in front of the Dashun military camp, and took a telescope to carefully observe the camp.

Like many camps in the northwest, this is a dirt enclosure. It is a camp built with soil tamping, because the camp is not very large, there are only two gates in the north and south. The gate is also very simple, and although the gate is tall and has gaps, it is made of wooden rafts.

Ning De said to the two cavalry commanders beside him, we will attack from the north gate, and you will send out a battalion to set up an ambush outside the south gate, and don't let anyone run out from there. You see, they were all afraid of the cold, and they all hid in their houses, except for a few sentries on the top of the gate. You sent a good guy to climb up and finish off the sentries, and then open the gate and we rushed in and took them out with a burst of strafing.

The two regiment commanders nodded and said, "Yes!" "I went and made my own arrangements.

A platoon of soldiers, braving the smoke and snow blown up by the north wind on the snow, crawled in the direction of the north gate of the camp.

The sentry on the gate of the fortress was already in a state of numbness with the cold in his arms, and he was looking forward to the sentry below to change the guard. I didn't even think that someone would crawl over from the snow in such weather.

The soldiers of this platoon climbed under the city gate and stood up against the earthen wall, and the platoon commander looked around, and then looked through the gap in the gate to the inside of the stockade, and found that there was no one in the village. They began to build a ladder and set up a man along the gate. The person on the top climbed over the gap between the gate and the doorway, entered the gate with a rope, and stood against the door. So there were ten people in the doorway. The ten people were not in a hurry to open the door, they entered the stockade from the doorway, followed the stairs to the top of the doorway, and after easily solving the sentry, they found the number outside, informed Ningde that they had solved the sentry, and then came down and pushed the door open together. Ningde led the cavalry and rushed over. Ning De rushed into the stockade with his cavalry, just in time to see a few rubber wagons parked in the courtyard of the camp. Ningde was even more angry this time. Wave your hand to start killing.

When the cavalry rushed over, the sound of horses' hooves was drowned out by the sound of the howling north wind. It was only when they rushed into the camp that the officers and soldiers of Dashun who were huddled in the barracks noticed that it was not good, but those probes looked out and saw that the soldiers had all been shot in the head by rifles. It is even worse to hide in the barracks and not get out. Ningde's cavalry took out their hands and threw them into the house one by one through the window. The more than 1,000 people of the Dashun army who were blocked in the house were enough to kill the 2,000 cavalry armed with automatic rifles.

Finally, the cavalry dismounted and began to search for the remnants of the enemy in the barracks. According to Ningde's order, a few live mouths were left, and Ningde asked who took the lead in crossing the river to kill people? It doesn't matter if you don't ask, after asking, Ning De is angry. It turned out that the leader who took the lead in the sneak attack across the river was not in the camp, so he took a few men to drive the carriage and gave gifts to a camp to the west. As he left, the leader said: "You can't enjoy the good things for yourself, and you have to take care of the other brothers." "Actually, the ten-ba-chan chief went.

It was also because the leader of the camp felt that the matter was over and that it was okay that he dared to take out something to honor the chief.

Ningde knew that fifty miles to the west of this camp was a larger camp, with more than 2,000 people. Now they won't find out what's going on here. Ningde decided to attack the camp, so Ningde ordered all the captured things to be loaded onto the wagon as soon as possible, and the carriage was not enough, so it was carried on war horses. Before leaving, he set fire to the camp.

Unexpectedly, they saw a few carriages on the road, stopped them and asked only then that they knew that the road was narrow, and these carriages were gifts to the camp in front, but unfortunately, the leader stayed in the camp and was going to drink there tonight, and they came back first in a hurry. Ning De angrily asked people to deal with these people, and then continued to rush west. When they arrived at the camp, it was getting dark, and if they didn't take down the camp today, they would have to spend the night in the open. Ningde felt that he couldn't wait until tomorrow and decided to break into this camp.

Ning De took the two regiment commanders and observed this camp closely, Ning De said: "Don't look elsewhere, this camp is a square city with a total of four gates. There were more than 2,000 people in the camp. It's getting dark now, so let's set up this camp, spend the night here, and tell the brothers not to blow up the house for a while, and we're going to live today. ”

The two regiment commanders smiled and said, "Don't worry, commander!" ”

This time they sent a platoon of soldiers to crawl through the snow to the north gate of the camp. At the same time, a cavalry company was sent outside the east, west and south gates to block the leak detection.

This time, the soldiers of this platoon did not bring ropes or anything like that, and each of them carried a black ** captured from the previous camp. Although this camp is also a rammed earth walled city, it is much stronger than the previous one, and the big wooden gate is different. The two gates closed the city gate tightly, and these soldiers who crawled over quietly piled the black ** under the city gate, and fixed a few hands** under the door**. The platoon leader made a thin rope to pull the fire rope, and after slowly withdrawing far away, he looked back at Ningde behind. Ning De saw all this, and when he saw this platoon commander looking back, he knew that everything was ready, and ordered the cavalry to go up. Then he waved at the platoon leader.

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The Song army occupied Hokkaido, and Yuankou landed on the island of Kyushu. Opening up the Japanese battlefield. --Progress of "Memories of the Southern Song Dynasty".