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Section 172 Ten Thousand People Stadium

 Section 172 Ten Thousand People Stadium

After understanding the leader's intention, the people of the construction company fully understood the focus of the construction.

"After all, this is a conference venue, not a stadium." Mei Wan looked at the drawings piled in front of her. These were the drawings that her subordinates had drawn over several nights. There is no large-format wide-format printer in this time and space.

It was drawn stroke by stroke on the drawing board head-on.

"Do we need to build a runway?" Li Xiaolu, who is responsible for planning and design, asked.

"The runway still needs to be built for military parades and mass demonstrations. The material is cinder." Mei Wan held her chin and thought about it. "The site should be paved with sand and gravel mixed with lime and rolled. It will be fine if it doesn't accumulate water when it rains."

.No other facilities are required.”

There is a shortage of building materials, so the large-scale terraced stands surrounding the stadium are not being built for the time being. The focus is on the rostrum. According to Ma Qianzhu's vision, this rostrum must be majestic and sturdy, and make people admire it at first sight.

"Majestic, spectacular, and it needs to feel very stable, do you understand? Stability symbolizes the great power of our new regime and its prosperous prospects..." Ma Qianxu gestured, not knowing what language to use to describe it.

"Like Tiananmen Square?"

"Yes, but don't give the copy a day to set up shop."

"You want me to copy it, but I can't." Mei Wan complained a little, "Where do you get so many resources?"

"Make it as effective as possible. You can brainstorm ideas."

So in the evening everyone began to brainstorm the structure of this large rostrum. The most common one is naturally the common appearance of a stadium rostrum. There is a high platform in the middle, with slightly lower and extended stands on both wings. There are overhanging eaves above the rostrum. It is very traditional.

, but quite practical. However, this design is too ordinary and obviously cannot satisfy Ma Qianzhu's ideas.

However, after the news about this building spread, many architecture enthusiasts came to the construction company to offer suggestions. Various renderings were released one after another.

The last thing to be built was a neoclassical building. A huge masonry step, 300 meters long and 12 meters high. The top step is a colonnade that runs through the entire step. In the middle of the colonnade is a huge screen wall -

―Used to hang symbols of political power, national emblems and the like. There are 12 smaller rectangular screens evenly distributed on the entire colonnade for hanging flags and things.

At both ends of the steps, a square pedestal similar to the shape of a beacon tower is set up. According to the design, two huge torch cages will be installed here.

A model of this design was made and brought to the meeting of the Executive Committee. As soon as the plaster model appeared, there was an awkward silence at the meeting - everyone in this group had seen the film of the Nuremberg Party Congress and recognized it immediately.

This thing is a replica of the viewing platform at Nuremberg Zeppelin Airport - it was designed by Dr. Speer.

Everyone present was careful not to mention the blueprint of this building. In fact, everyone liked the spectacular feeling in the movie of the Nuremberg Party Congress, but they were afraid that once this layer was lifted, the universal fig leaf would force everyone to abandon it.

.

"It's spectacular." Ma Qianzhu agreed, "But is the structure too big?"

"It's okay. According to the scale of this stadium, we can design the steps to be 24 meters high," Mei Wan pointed to the rendering hanging on the blackboard. "Now the steps are only 12 meters high, which is half less."

Wen Desi also liked this design. It was indeed spectacular. He had already imagined what he would look like when he was standing on the rostrum during a military parade and delivering a speech: "I think the best is 24 meters. This length is a little short with 12 meters."

"The main reason is that the materials and labor are limited, so we can only reduce the scale a little." Mei Wan said,

"I think it doesn't matter. This is a century-old plan. It would be beneficial to invest more," Wen Desi said.

"That's right. Just increase the height." Ma Qianzhu was quite generous when it came to this question, "What about the building materials? It looks like they are made of stone. How many cubic meters of stone are needed?"

"This can't be a pure stone building. There are not enough masons. Although quarrying with black gunpowder is more efficient now, grinding and cutting also requires manpower. Therefore, we plan to use a rammed earth structure with simpler technology. It is similar to building a city wall, with stone cladding on the outside.

Block." Mei Wan was already prepared for this problem.

"What's the color of the stone? Can it match? It's best to have an almost white effect."

"The color of the stone mined in Bairentan is bluish-gray, but we can use lime to whiten it, and the effect should be OK."

"Why should it be painted white? People in this time and space think white is an evil color."

"Is it painted the same red as Tiananmen Square?"

"It doesn't match this style, it's ugly."

"I think it's best to paint it golden yellow, a shining, sacred golden altar."

"The golden color is a blatant rebellion! Also, what are you going to use to paint this golden color? If it's not painted well, it will look like a temple. What's so sacred about it?"

In the design that was finally approved, it was decided to paint it white with lime water. Anyway, the houses of the ancients were also painted white with lime water. I didn't hear that they thought it was a sinister color.

In the official drawings, the colonnade above this large rostrum is removed. It is difficult to build such Roman columns in batches at the height. However, sufficient width was left during construction for future additions. The height of the entire building was also increased to 18

rice.

Although the colonnade above was not built, the screen walls for hanging badges still appeared in the official drawings. As for the screen walls for hanging flags, Mei Wan decided to temporarily replace them with wooden frames, each of which was 12 meters high, for hanging.

Of course, the flag can only be used when the wind is relatively light, otherwise the flag will be blown up like a sail.

Considering that there will be typhoons here in late summer and early autumn, these wooden frames are designed to be detachable. They can be disassembled and stored inside the building when not in use. Although it is a rammed earth internal structure, some rooms are also opened in it.

and channels.

After the design was approved, Mei Wan began construction. One advantage of the rammed earth structure is that workers do not need too many skills and can use ordinary laborers on a large scale. Hakkas from Fujian generally have the habit of building earth buildings and are more experienced.

Using these people as foremen for ramming soil, and cooperating with farmers recruited from the commune and outside, the project was carried out vigorously. At the busiest time, there were nearly a thousand migrant workers working on the entire construction site. In various quarries

There are also more than two hundred people quarrying and cutting stones. Another hundred people collect burnt lime from oyster shells on the beach.

In order to strive for progress, Mei Wan also used construction machinery to assist. Excavation, piling and simple compaction were all done using machinery, which greatly improved the efficiency.

Restricted by the masons' processing capabilities and technical level, Mei Wan found that some large and complex structures could not be processed by masons. The largest stone that the local masons had processed was only stone arch beams for bridge repair, and they had not done so for many years.

.

"It would be great if there were steel bars and we could just make prefabricated concrete parts." Mei Wan came back from the stockyard and felt very sorry.

"Steel is so scarce now that the metallurgical department is not willing to make steel bars at all," Yanquezhi said.

"How about making it out of bamboo?" Mei Lin said. He came from a small background as a construction worker. Naturally, he could only serve as a low-level engineering technician in the Lingao Construction Company where there were so many people.

"Bamboo reinforced concrete?" Mei Wan thought for a moment. He had indeed heard of this technology, which uses bamboo to replace steel bars to make prefabricated structures. It was popular in the 1930s and 1940s, and during the Great Leap Forward, in order to solve the problem of materials

The problem of scarcity has also gone through a stage in China.

"No, the yield strength of bamboo is far inferior to that of steel -" Bingfeng said quickly. He himself was engaged in steel frame structures, and of course he had heard of this evil. However, it has been abandoned by the construction industry for a long time, and it is obviously not up to the point of use.

requirements.

"How will you know if you don't try it?" Mei Wan thought that if the test was successful, it would be great news for construction companies and time travelers - there would no longer be a need to waste a large amount of wood to make beams, columns and floors.

"Boss, if things like cement prefabricated parts collapse, it will kill people." Bingfeng remonstrated bitterly. Could it be that the scumbag projects of later generations have not been enough, and they have to go to a new time and space to toss.

"Ice technician, when this issue is raised to an overall level, it won't work to just stick to the safety standards of past time and space." Merlin said.

"What?! Safety standards are still different from the modern and the past?" Bingfeng was furious.

Mei Wan tried to dissuade her: "Don't get angry. This is a technical issue. Let's just discuss it and solve it." He turned to ask Li Xiaolu, who was drawing the overall structure diagram.

"This, take a look." Li Xiaolu carefully sketched the drawing, "I majored in planning and environment, but I don't understand architectural structures."

Yan Quezhi said from the side: "Boss, you have to be careful. Construction is a century-old plan. Once something goes wrong, it will be infamy for thousands of years."

Merlin was still calm: "The question now is to solve the problem of whether there is or not, right? The executive committee has many projects to be launched next, and using wooden boards is not the answer - Lingao doesn't have that much wood, so it must be built

It’s made of prefabricated panels. Since it’s still unknown when the Ministry of Metallurgy will be able to produce enough steel bars, it would be a good idea for us to give it a try. If it succeeds, everything below will be easier to handle.”

These words moved Mei Wan. The temptation was too great. He made up his mind:

"Okay, let's give it a try, starting with small pieces."

Most of the people in the Lingao Construction Company have a background in construction and have some understanding of bamboo reinforced concrete. Bamboo reinforced concrete has been an attractive topic since a long time ago as a substitute for steel bars. After all, bamboo has a fast growth period and is cheap.

, and it is easy to process and can be used to save a lot of costs.

However, bamboo bars have never been able to replace steel bars. The main reason is that the tensile strength is not as good as steel bars. The best bamboo bar materials are only equivalent to 80% of steel bars, and most are only 50%. Moreover, the elastic modulus of bamboo bars is

The weight is only one-tenth that of steel bars. This shortcoming is quite fatal. Moreover, bamboo reinforced concrete also has problems such as corrosion, insect infestation and difficulty in adhesion of concrete, so it is not that simple to use.

The first thing is to find suitable bamboo reinforcements. There are many kinds of bamboos, but the bamboos that can be used for bamboo reinforcement concrete are basically concentrated on bitter bamboo, Mengzong bamboo and light bamboo. Among these three bamboo materials, bitter bamboo has the best tensile effect. Japan

During World War II, people did a lot of tests on bamboo reinforced concrete and believed that bitter bamboo was the most suitable bamboo reinforced material.

Bitter bamboo is widely distributed in China. Although it is not everywhere in Hainan, it is not difficult to find. I immediately called the Forestry Department under the Ministry of Agriculture Committee.

"Want bitter bamboo? No problem, I will send someone to harvest it tomorrow." Wu Kuangming said on the phone.

"No, we will send the bamboo harvesting requirements to your OA later. You must make it clear to the harvesting team and harvest according to our requirements, otherwise it will be useless."

The raw material of bamboo tendons, bamboo, is very particular. First of all, it cannot come from too fertile soil. Bamboo in overly fertile soil has thick walls, softness and lack of elasticity. Bamboo joints are easy to turn black and break after being harvested - and

The bamboo joints are the parts with the highest tensile strength in bamboo.

According to the experience of the Japanese, the bamboo used for bamboo tendons is best harvested from mountainous areas where trees such as cedar trees are mixed. The bamboo poles are tall and straight, the bamboo joints are short, the walls are thin, and the elasticity is good. Harvesting time

, should be carried out on a dry, moonless night, because bamboo harvested on a moonlit night contains more water, the bamboo juice has a sweet taste and is easily eaten by insects.

The harvesting age of bamboo should be 5 to 6 years. If it is too short, it will be too soft, and if it is too long, it will gradually lose its oiliness and lack of elasticity. Even the harvesting itself has certain technical requirements. I saw the information Luo Duo found from the big library.

Mei Wan smiled bitterly and said to Merlin: "This thing is not easy at all."

Meilin didn't know what to do. Seeing how thick the bamboo reinforced concrete manual was, he felt guilty and was afraid that it would be too complicated and he would become the initiator. But since the work had already started, he couldn't be soft, so he had to act confident:

"The complicated procedures are indeed effective. Otherwise, it would be meaningless to write such a book. This is the accumulated experience of engineering and construction predecessors."

The harvested bamboo can be used as bamboo tendons only from the 2nd to 21st sections above the roots. The bamboo sections must be dense and well-proportioned, with no signs of decay or insect infestation. The harvested bamboo is sent to Bopu for timber.

Go to the processing plant, where it is first properly dried and dehydrated - it cannot be dried too much, and a certain amount of moisture must be retained. Then it is treated with anti-corrosion, waterproofing and alkali resistance in the chemical plant of Bopu.

Because of the peculiarity of the plant, bamboo bars absorb water and expand when concrete is poured. As the concrete gradually dries, the bamboo bars shrink and harden due to the loss of water. Moreover, the shrinkage of bamboo bars is greater than that of concrete.

The speed is also much faster, so it won't take long for the bamboo tendons to loosen and break away from the concrete, and the adhesion between the two is lost.

In addition to the problem of dehydration, bamboo reinforcements also face alkali corrosion. Japanese tests before World War II showed that untreated bamboo reinforcements were corroded by alkali and completely lost their strength after being in concrete for 6 months.


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