The Yangtze River is passing away.

Zhu Yuanzhang issued an order to allocate millions of materials to Ying Tianfu Railway Engineering Group, and no one dared to disobey Zhu Yuanzhang's will.

Looking at the Yangtze River, Zhu Yuanzhang's face was full of doubts.

"I'm afraid that in the end, this bridge will not be built, and the manpower and material resources will be wasted." Zhu Yuanzhang has been very famous recently.

The engineering department knew that there was a little old man recently, who should be a noble family in the capital, pretending to be an ordinary squire and often coming to the construction site to wander around.

There are not many such people, some are hostile, some are curious, and every day people from the capital come to watch the construction of the railway.

After all, the famous blitzkrieg is already well known, as long as you are not a fool, you can know the power of the railway.

But the South is different.

There are many waterways in the south.

Then the difficulty of building a railway will be greatly increased.

Zhu Yuanzhang has made a lot of "friends" recently.

I also have a higher understanding of railways.

Lao Zhu came out of the temple, took a bowl and begged to become the emperor, and established the Ming Dynasty, which took only fifteen years.

Not to mention anything else, Lao Zhu's communication skills are definitely top-notch.

Many people had a good impression of the old man, and everyone felt comfortable chatting with the old man.

The exploration technicians transferred from the railway headquarters were exploring and planning everywhere, and there was a man in his thirties who was entangled by Zhu Yuanzhang.

"The slogan of our railway engineering department is not afraid of difficulties, overcoming thorns and thorns, just a Yangtze River, and it can't stop the footsteps of our railway people."

The man said loudly.

"Hahaha."

Zhu Yuanzhang couldn't help but pat the man's shoulder, "Xiao Liu, Xiao Liu, are you a newborn calf who is not afraid of tigers." ”

"No, we're confident."

Zhu Yuanzhang likes the self-confidence of a man.

However, Zhu Yuanzhang still couldn't help but preach: "I see, isn't your original plan very good." ”

The original plan was for a ferry.

Trains at both ends of the Yangtze River rely on ferries to cross the Yangtze River.

At the ferry terminals on both sides of the river, a crane is used to lift a car into a large cargo ship.

Zhu Yuanzhang has seen this plan, and he thinks it is already very good.

However, the railway engineering headquarters overturned this plan, removed the senior technical personnel of the headquarters, and sent them to the south in batches to brainstorm a solution to the construction of a bridge on the Yangtze River.

"If you want to build, you build the best."

The man said.

"In fact, our ancestors have long had a lot of bridge technology, which has been of great help to us in building railway bridges in the north."

"Really?" Zhu Yuanzhang asked curiously.

"During the Song Dynasty, the ancestors built the Guangji Bridge in Chaozhou, Guangdong, have the old people heard of it?" The man asked.

Zhu Yuanzhang shook his head.

"The flow of the Hanjiang River has changed a lot more than here, and the difference between dry water and flood is more than 100 times."

"The ancients described it: its flow is as fast as a horse's gallop and turbulent, and those who touch it are full of wood and stone. The water falls and the sand surges, a reed can be crossed, the water rises and the sand escapes, although the boat is set up, it can not be crossed three or four times a day, and the residence close at hand is like a thousand miles. ”

The man sighed.

Zhu Yuanzhang said with admiration: "I didn't expect you to recite poems." ”

"We have night studies, and we regularly participate in the training of the training club, not to mention anything else, this engineering knowledge, we must keep in mind when we eat this bowl of rice."

Zhu Yuanzhang couldn't help but ponder.

It seems that the Beiping model is not just a simple reason for building a few factories, no wonder Lian Zining failed to imitate Beiping to run a factory in Yingtianfu.

Listening to the man's words, it is a night school and a training club, so that even if it is an ordinary craftsman, the technical level is developing rapidly.

Zhu Yuanzhang couldn't help but think of the people-oriented often mentioned in the newspapers in Beiping, it seems that this people-oriented, not only in terms of work treatment.

How many workers like the man in front of him are there in Beiping?

It's like the truth of war.

The workers in Beiping are like this man, why not the world's most elite army, a little bit of everything, Zhu Yuanzhang feels that he has learned a little more.

"This bridge across the river and the sea in the Song Dynasty has a total length of 1,600 feet, two sections in the east and west, all stone piers and stone beams, but the middle section is a pontoon bridge organization."

"Pontoon?" Zhu Yuanzhang didn't understand very much, how could he build a pontoon bridge again, mainly because he hadn't seen it.

"The wisdom of the ancestors."

The man's face was full of pride.

"The Song Dynasty is exactly what the little prince said, the most brilliant era of our ancestors' culture and technology, the splendid civilization itself, and the worship of the ancients in the Song Dynasty."

"The Song Dynasty even posthumously sealed up the famous scientists among the ancestors, which shows the degree of civilization of the Song Dynasty."

Zhu Yuanzhang was a little confused.

That's right, why did you get to the Great Song Dynasty again.

Although he said that he wanted to restore the Song system, he also hated the failure of the Song Dynasty.

But the people of Peking are different, the people of Peking don't know why, and they are proud of their ancestors when they mention them.

But this is also very good, Zhu Yuanzhang smiled on his face.

Only then did the man explain why he was so amazed.

"That's the Han River, it's connected to the sea, and there is an endless stream of big ships coming and going, and if a bridge across the river is built, wouldn't it block the boats."

"Therefore, the middle section of the cross-river bridge of the Great Song Dynasty was built as a pontoon bridge that could be opened and closed."

"The pontoon is made up of eighteen large wooden boats, and when the big boats arrive, the wooden boats in the middle can be unmoored and moved, making way for navigation in the river."

If Zhu Gaochi were here, he would say that in fact, it is the so-called bridge construction viewpoint put forward by the modern West, which is open to traffic at the right time, and the boat is open when driving, and does not hinder both water and land transportation.

Zhu Yuanzhang heard for the first time that there was such a cross-river bridge, and he couldn't help but be amazed.

"There are a total of 21 piers on the Guangji Bridge, which stand under the river."

"There is also the Luoyang Bridge built by the Great Song Dynasty in Quanzhou, Fujian, a 3,600-foot-long bridge across the river, and there are 48 piers standing under the river alone."

"The Song Dynasty was able to build such a long bridge across the river, is my Ming Dynasty inferior to the Great Song Dynasty?" Hearing the length of the second bridge, Zhu Yuanzhang asked dissatisfiedly.

The man shook his head.

"The total length of the Luoyang Bridge is 3,600 feet, and the water flow at the mouth of the Luoyang River in Quanzhou is turbulent and turbulent, so it is very difficult to build a bridge, not to mention a stone bridge of such a length."

"If there is no breakthrough in materials, this bridge is great, but it is not enough to support the railway."

"Can't it be repaired?"

Zhu Yuanzhang was anxious.

The man laughed and began to smug again.

"It can be repaired, now we have reinforced concrete technology, and we have built railway bridges in the mountains, so naturally we can also build them in the river."

Zhu Yuanzhang couldn't help but smile, although this man was a little panting when he spoke, he was still relatively reliable.

I don't know when I'll see you.

Our Ming Dynasty can not be worse than the Great Song Dynasty, not only to build a cross-river bridge, but also to make the cross-river bridge of the Great Song Dynasty longer and higher.

Zhu Yuanzhang wanted to win.

The support for Ying Tianfu Railway Engineering Group has increased by three points.

……

Peiping.

Xu Ning led more than a dozen stewards and technicians, carrying boxes of reports, and everyone looked serious.

"The bridge across the river in Yingtianfu cannot be repaired at present."

Zhu Gaochi was not angry, and calmly asked the reason.

"Through the exploration of water currents, riverbeds, flood seasons, etc., as well as the organization of local craftsmen who understand hydrology, even the most suitable area is more than 13,000 feet wide."

"Not to mention the height of the construction, the wind and waves that will be encountered, and the forced construction of this cross-river bridge is only afraid that there is a high probability of failure."

After listening, Zhu Gaochi understood the questions that everyone said.

However, Zhu Gaochi still couldn't help but accuse: "It was the people who wanted to build the cross-river bridge at the beginning, and now it is you who oppose the construction of the cross-river bridge." ”

"Please punish the little prince."

Xu Ning took the initiative to take responsibility.

"I punish you for what to do, what I want is that you are responsible for your intentions, in this matter, did you have the original intention of great joy, which caused the dilemma now."

"Not really."

Another steward stepped forward and said: "At present, the technicians of our engineering department are making every effort to study the Anping Bridge, which is a cross-river bridge built by the Great Song Dynasty in Quanzhou, Fujian Province, with a length of more than 8,100 feet, and is called the Wuli Bridge by the locals. ”

"The water area of Anping Bridge is wider than that of Luoyang Bridge, the hydrological conditions are more complex, and the sediment is piled up in many places, and it is not only time-consuming and labor-intensive to pile up with stones, but also easy to sink when the stones at the place where some sediment are piled up, and it is difficult to form a joint force at all."

"Because this bridge has taken a clever way to avoid the wind and waves, the Yangtze River Bridge we want to build cannot be learned, but this bridge has many things worth studying in terms of technology, such as the sleeping wood sinking foundation method."

"If we can thoroughly study the method of sleeping wood sinking, then it is no longer a problem to build a stable stone pier on the Yangtze River, and the key problem of stone pier sinking will be solved."

"There is also the Jiangdong Bridge, which is 80 feet high, and in addition to the sea ships in Jinzhou, the inland river boats can be unimpeded."

"When we understand the technology of these bridges, then the core problems encountered in the construction of the Yangtze River Bridge we want to build will be solved."

Whether it is Guangji Bridge, Luoyang Bridge, Jiangdong Bridge, or Anping Bridge, they are all sea-crossing beam stone bridges built in the Song Dynasty, and they are world-famous sea-crossing beam stone bridges.

Many of the later theories of bridge technology are basically similar.

For example, the sleeping wood sinking base method.

Many Yangtze River bridges in later generations also adopted this piling method.

"But in response to the railway bridge in Tianfu, we suggest that the ferry method should still be adopted, and the first Yangtze River bridge should be built in Huguang."

Xu Ning said at this time: "According to the opinions of colleagues in the exploration department, the Yangtze River Bridge in Huguang only needs 5,000 feet in length, and the ship is an inland river boat, whether it is height or length, it is a technology that can be mastered. ”

"So you're asking me to go to Emperor Shu's grandfather?" Zhu Gaochi understood.

Zhu Yuanzhang can be said to be a strong supporter of the Tianfu Railway Engineering Department, and now he suddenly said that he would not build a railway bridge in Tianfu, and the people below did not dare to come forward.

It is true that there are many waterways in the south.

However, the Jianghuai region's economic development has a foundation.

What foundation?

Since the Southern Song Dynasty built bridges across rivers and seas such as Luoyang Bridge and Anping Bridge, it has set off enthusiasm for the construction of "super projects" such as Yulan Bridge, Stalagmite Bridge, Dongyang Bridge and Sudai Bridge.

And many of the bridges are better than the blue.

Some scholars have counted that nearly 100 large and small bridges were built in the Quanzhou area of the Southern Song Dynasty, which was the peak of the previous dynasties.

It is precisely because of the innumerable bridges of all sizes in the South, and the bridge technology that cannot be compared with the completion of the first industrial revolution in Britain.

Only then can we have the foundation for the economic development of the south.

Thousands of years ago, the south was a wild land, and it was the superior and comfortable living environment created by the ancestors, not given by nature.

"It looks like I'm going to disappoint Grandpa Huang." Zhu Gaochi pointed to the group of people in front of him and sighed helplessly.

(End of chapter)