No Regrets In Flourishing Tang

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The Great Tang has a total of ten or five lanes. Each lane has a large area. Of course, it also contains a lot of resources. Lime and clay are available in each lane. Of course, there is no shortage of sand and gravel.

In order for the Great Tang Empire to popularize cement workshops, Li An trained 300 talents while building cement workshops near the capital, and planned to let them learn the process of making cement, and then went to build cement workshops in various ways. Then, step by step Within the prefectures and counties within the jurisdiction suitable for the construction of cement workshops, a certain number of cement workshops will be built to promote road construction and improve the housing conditions of the elderly 100 people.

Because the manufacture of cement is so simple, 300 talents were quickly trained and dispatched to each Dao Realm on a scale of 20 people.

After dealing with the issues related to cement promotion, Li An began to consider the plan to build a large number of bridges. Of course, all the bridges currently built are for the future construction of the railway to Laizhou. Without these bridges, the railway to Laizhou Can’t be laid.

Since the purpose of laying these bridges is to build railway services, the location of these bridges must be on the railway line, that is, the railway line to Laizhou must be determined before the construction of the bridge can begin.

Of course, when the two strategic railways began to be laid, Li An had already dispatched two exploration crews to start investigating the railway lines, one of which was the strategic railway in An Western border and the other was the strategic railway to Laizhou.

Almost all of the Western border is desert, simply does not need to care about the problem of bridge building, and the railway line to Laizhou is different. This line has to pass through many Water Elements, and there is also Jishui, which is nearly 2 miles wide. Dahe is almost vertical and horizontal, so Li An put more energy on the eastern railway line and immediately invented cement and concrete, of course, and higher-end reinforced concrete, in order to A large bridge is built on the Water Element, so that the rails can pass smoothly along the way.

The officials of the railway bureau exploring the railway line have returned to Beijing and handed over the best route for exploration to Li An, and let Li An make the final decision.

Li An didn’t have much time to ran to inspect the route himself. Since the talents of these railway bureaus had already determined the route, he would not raise objections and immediately agreed.

After the railway line from Luoyang to Laizhou is determined, the 1st Step is to build the bridge. Only when the bridge is repaired first, various materials for laying the railway can be smoothly transported along the railway line, thereby speeding up the process of laying the rails.

When constructing the Longshouqu Bridge outside the Chunming Gate, these participating craftsmen already had some experience in building concrete bridges. However, Longshouqu is a very narrow river and cannot be compared with Luoshui and the Grand Canal Therefore, to build the Luoshui Bridge and the Grand Canal Bridge, some research must be carried out.

Luoshui is not far from Luoyang, and the section of the Grand Canal to be passed is also near Luoyang City. For this reason, the two bridges that Li An must first build are.

In order to build these two railway bridges, Li An first dispatched a team of people to build a cement plant near Luoyang City and called for manpower for large-scale production. In addition, a Cutter Suction dredger was used near the city of Luoyang. The river channel is to wash sand to supply the need for bridge building, and it is to transport a large amount of black gunpowder to Luoyang, and explode the bluestones in the nearby mountains. In this way, there are broken stones. As for the manufacture of steel bars, Chang’an The workshop near the City has been prepared for a long time, and can be shipped to Luoyang City in large quantities by train freight.

After the materials and materials were arranged, Li An led more than 1000 bridge-building talents and took a passenger train to Luoyang City to prepare on-site guidance and gave ideas and methods for building the bridge for the craftsmen to complete.

According to the current train capacity, only one train is enough for more than 1000 people, and a variety of freight trains are used for the various machinery required for bridge construction. These are arranged by Yu Chaoen without Li An. Need to go by car.

In the comfortable soft sleeping car, Li An picked up a pen and paper and drew a bridge shape on a piece of white hard paper, that is, the railway bridge of later generations, divided into 2 layers, the lower layer is the railway, the upper layer is The road for horses and horses.

The construction of such a railway bridge is quite complicated, and the difficulty of construction and the materials consumed must be very huge, but the construction of such a bridge has extremely important strategic significance. Therefore, no matter how high the cost is, these The bridge was built.

Although the width of Luoshui and the Grand Canal is only a few hundred steps, even within a mile, in order to ensure the smooth flow of water transportation, the bridge deck of the railway bridge must be built higher, and in order to make it easy for the horses to ride on the bridge, just A very long approach bridge must be built, so that the total length of the bridge to be built will be much wider than the river.

Of course, how long the approach bridge needs to be depends on the difference between the height of the bank on the 2nd side and the water surface of the river before making a decision. If the water surface of the river is much shorter than the bank on the 2nd side, the approach bridge need not be too long If the 2 banks are almost equal in height to the river, a long approach bridge is required.

Detailed analysis of the specific situation, only after arriving at the scene, Li An can finally determine how long the total length of the bridge needs to be. At present, on the train, only a rough look can be drawn, and it cannot be finalized yet.

After all the drawings were drawn, Li An let several technical backbones enter the carriage, and told them the structure and characteristics of the railway bridge, without omission and in detail, to let them understand how the railway bridge should be laid and what might be encountered Technical Difficulties.

These craftsmen are experts in bridge construction. Although they used to build stone bridges and wooden bridges, the principle of bridge construction is still very clear. Therefore, after the Longshouqu Bridge was built, they soon understood the concrete Various characteristics of the bridge, and know that this advanced bridge building material is much stronger than stone and wood.

When Li An proposed to build bridges on Luoshui and the Grand Canal, these craftsmen were very shocked when they first started. They thought Li An was crazy, but after carefully analyzing the characteristics of concrete bridges, they were convinced that Li An ’s The concept is fully achievable and fully supports Li An. After all, as long as these advanced bridges are built, they will also be proud of these craftsmen. Any occupation has a sense of professional pride, and bridge craftsmen are of course no exception.

Before dark, the train arrived at Luoyang City Railway Station on time. Li An took more than 1000 craftsmen to stay for a while in Luoyang City. He was ready to go to Luokou in the early morning of the second day to investigate how to build the bridge.

After dinner, Li An continued to draw pictures to perfect the details of the railway bridge, find the best design ideas, and build the highest-end railway bridge at the lowest cost.

On the early morning of the second day, Li An led 2 craftsmen and a large number of bridge-building machinery, heading for Luokou. The craftsmen and machinery moved too slowly. Li An shook them off and only led a small number of technical backbones to lead the horse. There are dozens of talents with sword guards and several railway bureaus.

“Minister Li, this is the place. The river here is the narrowest and the most suitable for building bridges.”

A talent from the railway bureau pointed at Luoshui ahead and was introduced loudly.

Li An looked up and glanced, this position is indeed very good, not only the distance is only more than 100 steps, but also, the bank on the 2nd side is much higher than the river surface, so do n’t raise the deck too much, and the approach bridge is not needed. It’s too long.

After some observation, Li An finally determined the plan of the bridge. In this plan, the total length of the bridge is 2 miles, the lower level railway is flush with the side 2 road, and the upper level road is slightly higher. In this way, it is necessary to build a bridge for the upper road.

The approach bridge must be bent to one side and cannot be in a straight line with the main bridge. Otherwise, it will block the rails and trains. After all, it is a railway bridge. The main function is to let the train go, and the carriage can easily turn. The train can only go in a straight line, so of course, sacrifice the straightness of the road.

After the plan is determined, construction will begin, and at this time, a lot of materials for bridge construction have been prepared. Although it is not enough to support the entire bridge, the various materials required for early construction are still sufficient. .

The pier of the approach bridge is relatively easy to build. It only needs to dig the foundation and pour reinforced concrete, and the pier of the main bridge is not very easy to build. This requires the foundation to be laid in the water, and the height of the entire pier is relatively large. There are also many materials that are consumed, but these are difficult for smart construction talents. They already have experience in this area, and they can easily complete the construction of bridge piers in the water.

In order to increase the strength, all bridge piers are embedded with reinforced materials, and it takes a long time to build the piers. Li An used this time to travel to the coast of the Grand Canal not far away and investigate the construction plan of the second canal railway bridge.

The situation encountered by the Grand Canal is completely different from that of Luoshui. The shore and the water surface here are almost the same height. To ensure the smooth passage of the transportation vessels, the height of the bridge deck must be raised upwards. In this way, the length of the approach bridge It needs to be greatly increased.

Li An initially estimated that to build a canal railway bridge, the approach bridge and the main bridge at this level of the railway will require 5 miles, while the upper road and the approach bridge will require a seven-eight li distance.

In other words, the construction difficulty and engineering volume of the Canal Railway Bridge are much greater than that of the Luoshui Railway Bridge. Only after the construction of the Luohe Railway Bridge is successful can manpower be built to build the Canal Railway Bridge.

Of course, the Luohe Railway Bridge was built first, without the need to recruit manpower to build it together, in order to verify the technology of bridge construction, to see how the effect of the railway bridge built by such a construction method is, on the basis of summing up enough experience, and then Build the second bridge, and then continue to summarize experience.

Li An believes that as long as the Luoshui Railway Bridge and the Grand Canal Railway Bridge are all successfully constructed and put into use, the following bridges do not have to worry about themselves. These skilled bridge-building craftsmen are fully qualified to build these bridges. .

The construction of the pier of the Luoshui Railway Bridge is in an orderly manner, and the modular reinforced concrete deck structure is also under construction.

After inspecting for a few days, Li An confirmed that there would be no major problems, so he returned to Chang’an City by train and handed over the responsibility of building bridges to these skilled craftsmen, and believed that they could complete the construction of the bridge without disappointment. Mission, and Li An will return to Luokou Bridge again after a few months to check the construction quality of the bridge.

In the evening, the train arrived at Chang’an City Railway Station on time, and Li An walked down the carriage under the escort.

“Minister Li, what a coincidence!”

As soon as Li An walked to the train, he saw Assistant Minister Guo Xuji of the Ministry of Industry, and hehe came over with a smile.

“Assistant Minister Guo, why are you here, the train at night seems to be open at not all!”

Li An looked at Guo Xuji very curiously.

He felt that Guo Xuji was here intentionally, in order to see himself immediately, but Li An ’s return to Chang’an City was a temporary intent, not at all tell anyone in advance, in this era of no mobile phone, Guo Xuji is absolutely impossible to be notified in advance.

Did Guo Xuji really happen to pass by here? Or is there any unknown prophetic ability, will pinch the kung fu.

“Minister Li, This Official just happened to pass by. When you see the Minister getting off, you are greeted. How is the construction of the Luokou Bridge going smoothly!”

Guo Xuji casually confessed and asked about the bridge.

“Haha! The construction of the Luokou Bridge is relatively smooth. The craftsmen are rushing to work day and night. It is estimated that the construction can be completed in a few months.”

Li An introduced very confidently. He has absolute confidence in the railway bridge he designed and believes that the craftsman responsible for building the bridge will be able to complete the task well.

“Everything goes well on the bridge, everything goes well. This is really the blessing of the Great Tang!”

Guo Xuji said happily, smiling a little bit shut.

“Assistant Minister Guo, do you need to be happy like this?”

Li An frowned, looking towards Guo Xuji.

“Hehe, Minister Li, I have something to discuss with you.”

Guo Xuji said flatly.

“What is it, Assistant Minister Guo but it’s okay.”

Guo Xuji brewed for a while, opened the mouth and said: “Minister Li, the construction of the bridge is a big project, and, in the future, a larger bridge will be built, so the Imperial Court should specifically set up a bridge building office, just like the railway bureau That’s enough. “

“Yamen building the bridge?”

Li An suddenly stunned, and immediately understood that Guo Xuji simply did not pass by, but waited here deliberately, and his purpose here was to build a bridge gate.

“The meaning of Assistant Minister Guo, This Official understands very well that Imperial Court is also very necessary to build the bridge ’s bureau, but whether this bridge bureau will be affiliated with the Ministry of Industry, This Official cannot guarantee, everything depends on What your Majesty means. “

Li An said with a smile.