Reborn in the 70s as a military doctor and meets a special soldier

Facing Teacher Lin's doubts, Lu Jiu smiled sheepishly.

"I flipped through it in the car that day, but I didn't finish it. But I did have some ideas, so I wanted to read this material again."

"Okay, I'll get it."

Lu Jiu had taken off his shoes and socks, and the soles of his feet were wrinkled and cracked, making it difficult for him to move around. Teacher Lin took the initiative to act as a messenger.

Of course, it cannot be ruled out that Teacher Lin was detained for a day and wanted to relax.

He brought over "Collection of Prestressed Concrete Bridges" and Lu Jiu started reading at night with the help of a flashlight.

This material comes from overseas. Teacher Lin has been talking about it a lot these days. It was brought back by a young man named Shen Baizhou, and he also translated it. It is said that Shen Baizhou is about the same age as him and grew up in the capital.

However, Lu Jiu had never met Shen Baizhou. He grew up in a military compound, while Shen Baizhou should have grown up in a government compound. The two of them were not in the same circle, so it was normal for them not to overlap.

However, his calligraphy was vigorous and powerful, and his translation was spot on. At least Lu Jiu had no trouble reading, and the obscure technical terms became simple and humorous.

It can be seen that Shen Baizhou does have amazing knowledge. Teacher Lin said that he brought back more than these materials and was responsible for more than these projects. He is an amazing young man.

Lu Jiu was even looking forward to meeting Shen Baizhou, hoping that he would have this opportunity in his lifetime.

After the short gap passed, Lu Jiu began to read seriously.

Speaking of bridges, there have been countless bridges from ancient times to the present. Let’s not talk about the past ones for now. There are currently two types of bridges that are widely used. The first type is the prestressed concrete bridge, which was born in the 20s. To put it bluntly, it is a combination of prestressed concrete and high-strength steel bars.

The development of steel-making technology has broken the single structure of wooden bridges, brick bridges, stone bridges and concrete bridges in the past, making steel and steel bars the main material for bridge construction.

This kind of bridge not only saves construction materials and reduces the weight of the bridge, but also predicts the depth of foundation sinking and determines the bearing capacity. In short, it is a very high-quality modern bridge.

What's more important is that it can be constructed using cantilever installation methods, push-up methods, prefabricated in sections, and can also be installed with light lifting facilities.

As there is a lack of transportation tools and heavy-duty cranes in China, choosing this type of bridge is the most suitable.

Of course, there are many types of prestressed concrete bridges, such as: simply supported beam bridges, continuous beam bridges, cantilever beam bridges, arch bridges, truss bridges, steel frame bridges, inclined suspension bridges, etc.

This book also includes several foreign bridges. For example, the Oleron Bridge in France, built in 66, is a continuous bridge with a total of 26 holes, each hole is 79 meters.

There are many world-famous bridges that I will not go into details here. Of course, these are not the only ones. In 68, the famous Nanjing Yangtze River Bridge was also built in China. It is a continuous steel truss bridge for both highway and railway purposes, with a total length of 6 kilometers.

However, steel bridges have strict requirements for domestic steel production technology. Not only must they have steel with high strength, high toughness, fatigue resistance and corrosion resistance, but also welded flat steel, angle steel, plate steel, etc. The Nanjing Yangtze River Bridge can be said to be made of the same steel as the whole country. Built with strength.

Its geographical location and role are indeed very important.

However, building a steel bridge on the tidal flat would be a waste of materials, and the domestic steel industry would not be able to support it fully because there is too much steel in the area where it is needed. Therefore, a double-curved arch bridge is more suitable than a steel truss bridge.

In 64, the country's first experimental double-curved arch bridge was completed in Wuxi, with a span of 9 meters. After the completion of Wuxi's first double-curved arch bridge, bridge construction experts had confidence and began to intensively build the Xiangjiang River Bridge. The Xiangjiang River Bridge was 16 years old. The double-curved arch bridge has a large hole span of 60 meters and a small hole span of 50 meters, with a total length of 1250 meters. It is said that it is still under construction and is expected to be completed next year.

Lu Jiu thinks that a double-curved arch bridge can be considered here. The span of the tidal flat is 13 meters, which is only 4 meters different from Wuxi. The comparison between the gourd and the gourd is also stronger.

Lu Jiu's thoughts were so concentrated that he didn't even know when Song Wei came.

Speaking of Song Wei, there was no need to worry about the commander-in-chief leading the way. On the way, the commander-in-chief also wanted to use the gas pedal to get there faster, but who knew that the road would become more and more difficult to walk, and it started to rain in the middle of the way.

The commander-in-chief was anxious in his heart, fearing that the heavy rain would come down like this and get stuck on the road, which would cause trouble.

However, the more anxious you are, the more things will go wrong. The commander-in-chief's car got stuck in the quagmire several times. Fortunately, there were two cars behind him, so he could get out of the car at any time and help push the car. Otherwise, Song Wei would have to rely on herself to push the car. When can we reach the 333 embankment?

At this time, we finally reached the river embankment, and the rain gradually became heavier. Most of the little soldiers were hiding from the rain in the Dongfeng car to keep warm. The arrival of the commander-in-chief alerted the little soldiers in the car, and everyone stood up and looked outside.

Then I saw 7 and 8 cars led by a jeep.

Everyone couldn't help but cheer outside happily.

For a moment, the cold night was filled with excitement.

In Song Wei's eyes, this scene seemed a little familiar. At this time, there were countless shirtless people cheering towards them in four Dongfeng cars parked in the wasteland.

Some even climbed out of the car excitedly. Speaking of soldiers, the buttocks are the whitest on the body. At this time, the white buttocks reflected the bright light under the car lights, which was very eye-catching.

Song Wei couldn't help but hissed and thought to herself, these young men are really awesome. They are welcomed with such high standards in such a cold weather. How should she respond to such enthusiasm?

However, before Song Wei could respond, the little soldier running over from the opposite side finally spotted Song Wei in the passenger seat of the jeep.

He said "Ah!" and then ran back in panic. His running speed was as fast as a rocket.

The others who came after him were all confused and couldn't understand what was going on.

As a result, the young man who had already hid in the car waited until he had pulled off his clothes before speaking: "Doctor Song is in the car!"

"!!!"

Someone uttered a curse word, and then the scene of savages escaping was staged again.

Only this time, instead of covering their crotches, everyone was covering their butts.

The commander-in-chief looked at the scene in front of him with a dark look on his face. He seemed to be reminded of the scene where Song Wei met everyone on the tidal flat for the first time. He couldn't help but smile awkwardly.

"Look at these young men, they are so rude, so rude. Awei, you should be used to it, right? Hehehe... Actually, don't look at them for being stupid or not. They are very useful at critical times. They must have just finished the rescue, and their clothes are all wet. ”

Song Wei smiled and nodded: "I understand."

"That's good..." The commander-in-chief nodded: "Well... you sit in the car for a while, and I'll go down and urge them."