Lin Gao Qiming

Chapter 210 Ten Thousand People Stadium

After understanding the intention of the leader, the people of the construction head office fully understood where the focus of the building was.

"In the final analysis, this is a conference venue, not a stadium." Mei Wan looked at the drawings piled up in front of her. These were drawings drawn by her subordinates for several nights. There is no large-scale wide-format printer in this time and space. It was drawn stroke by stroke on the drawing board head-on.

"Do you want to build a runway?" Li Xiaolu, who was in charge of planning and design, asked.

"The runway still needs to be built, and it will be used for military parades and mass demonstrations. Cinders will be used as the material." Mei Wan thought about it with her chin in her hand. "The site should be paved with sand and gravel mixed with lime, and it will be fine if it rains without water accumulation." .No other facilities at all.”

Building materials are scarce, so the large terraced stands that surround the stadium will not be built for the time being.Focus on the rostrum part.According to Ma Qianzhu's vision, the rostrum must be magnificent and strong, so that people can feel reverence at a glance.

"Majestic, magnificent, and feel very stable, do you understand? Stability symbolizes the great power of our new regime and the prospect of prosperity..." Ma Qianju gestured, not knowing what language to use to describe it.

"Like Tiananmen Square?"

"Yes, but don't let the duplication come out one day."

"If you want me to copy it, I can't copy it." Mei Wan grumbled a bit, "Where do we get so many resources?"

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

So in the evening everyone began to brainstorm the structure of this large rostrum. The most common one is naturally the common appearance of the stadium rostrum. There is a high platform in the middle, and the two wings are slightly lower extended stands.Overhanging rain eaves are set above the rostrum.Very traditional, but quite practical.However, this design is too ordinary, obviously not satisfying Ma Qianzhu's idea.

However, after news of this building spread, many architecture enthusiasts came to the construction company to offer advice.All kinds of renderings came out one after another.

The last thing put into construction was a neoclassical building.A huge masonry step, 300 meters long and 12 meters high, the uppermost level is a colonnade that runs through the entire step.In the center of the colonnade is a huge screen wall - used to hang the signs of the crossing regime, the national emblem and the like. There are 12 smaller rectangular screen walls evenly distributed on the entire colonnade to hang flags.

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

The design was modeled and brought to the executive committee meeting.The appearance of the plaster cast elicited an awkward silence at the meeting—everyone in the group had seen the film of the Nuremberg Party Congress and immediately recognized the object as a replica of the viewing stand at Nuremberg Zeppelin Airport— ―It was designed by Dr. Speer.

All those present were careful not to mention the blueprint of this building.In fact, everyone likes the grandeur of the Nuremberg Party Congress film, but they are afraid that once this layer is uncovered, the universal fig leaf will force everyone to abandon it.

"It's spectacular." Ma Qianju agreed, "But isn't 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 renderings hanging on the blackboard. "Now the steps are only 12 meters high, which is less than half."

Wen Desi also likes this design, it is indeed spectacular enough, he has already imagined himself standing on the rostrum to parade and give a speech: "In my opinion, 24 meters is the best, and this length is slightly shorter than 12 meters."

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

"I don't think it matters. This is a century-old project. It is also beneficial to invest more." Wen Desi said.

"That's right. Just increase the height." Ma Qianzhu was very generous about this question, "What about the building materials? It looks like it's made of stone. How much stone does it cost?"

"This can't be a pure stone building. There are not enough masons. Although black powder is used to quarry stones, it is efficient, but it also requires manpower for grinding and cutting. Therefore, we are going to adopt a rammed earth structure with simpler technology. Similar to building a city wall, the outside is covered with stones. block." Mei Wan had already prepared for this question.

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

"The stones mined at Bairentan are bluish-gray, but we can paint them white with lime, and the effect should be fine."

"Why paint it white? The common people in this time and space think that white is a fierce color."

"Could it be painted the same red as Tiananmen Square?"

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

"I think it's best painted in golden yellow, shining, holy gold altar."

"Golden yellow is blatant rebellion! What else are you going to use to paint this golden yellow? If it is not painted well, it will be like a temple. What is sacred?"

In the final approved design, it was still decided to use lime water to paint white. Anyway, the houses of the ancients were also painted white with lime water. I have never heard that they think it is so ominous.

In the official drawings, the colonnade above this large rostrum was removed.It is really difficult to build such Roman columns in batches in Lingao.However, there is enough width left for future additions when building.The height of the entire building has also been raised to 18 meters.

Although the upper colonnade was not built, the screen wall used to hang the badge still appeared in the official drawing.As for the screen walls where the flags are hung, Mei Wan decided to temporarily replace them with wooden frames, each of which is 12 meters high, to hang the flags. Of course, it can only be practical when the wind is relatively small, otherwise the flags will be blown like sails Gotta drum up.

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

After the design was approved, Mei Wan started construction.One advantage of the rammed earth structure is that the workers do not need too much technology, and ordinary labor can be used on a large scale.The Hakka people from Fujian generally have the habit of building earthen buildings and are quite experienced.Use these men as foremen for ramming the earth.Coupled with the farmers recruited from the commune and outsiders, the project was carried out vigorously.At the busiest time, nearly a thousand migrant workers were working on the entire construction site.There are also more than 200 people quarrying and cutting stone at various quarries.Another hundred people collected burnt lime from oyster shells by the sea.

In order to strive for progress, Mei Wan also used construction machinery to assist. The excavation, stacking and simple compaction all use machinery to work, which greatly improves the efficiency.

Restricted by the mason's processing ability and technical level, Mei Wan found that some large and complex structures could not be processed by masons.The largest stone processed by local stonemasons is only stone arch beams for bridge repairs, and they have not been made for many years.

"It would be great if there were steel bars, and we can directly make prefabricated concrete parts." Mei Wan came back from the stockyard, feeling very regretful.

"Now that steel is so scarce, the metallurgical department is not willing to make steel bars at all." Yan Quezhi said.

"How about making it out of bamboo?" Merlin said.He was born as a small construction worker.Naturally, in the Lingao Construction Company, where there are so many talented people, they can only serve as low-level engineers and technicians.

"Bamboo-reinforced concrete?" Mei Wan thought for a while, but he had indeed heard of this technique, using bamboo instead of steel bars to make prefabricated structures. It was popular for a while in the 20s and 40s of the [-]th century. In order to solve the problem of lack of materials during the Communist Party of China, a stage was also carried out in China.

"No way, the yield strength of bamboo is far inferior to that of steel—" Bingfeng said hastily.He himself was born in steel frame structure, of course he has heard of this crooked way.However, it has been abandoned by the construction industry for a long time, and it is obviously not up to the requirements for use.

"If you don't try it, how will you know?" Mei Wan thought that if the experiment was successful, it would be great news for the construction company and the traversers—there would be no need to waste a lot of wood to make beams, columns and floors.

"Boss, if things like cement prefabricated parts collapse, people will die." Bing Feng bitterly remonstrated, could it be that the bean curd projects of later generations have not caused enough trouble, and they have to go to the new dimension to toss.

"Ice technicians, when this problem is brought up to a general level, it is not feasible to blindly stick to the safety standards of the past time and space." Merlin said.

"What?! Safety standards are still divided into modern and past?" Bingfeng was furious.

Mei Wan dissuaded: "Don't get angry, this is a technical problem, we should discuss it." He turned to ask Li Xiaolu who was drawing the overall structure diagram.

"Here, take a good look at it." Li Xiaolu carefully sketched the blueprint, "I study planning and environment, and I don't understand architectural structures."

Yan Quezhi said aside: "Boss, you have to be careful, construction is a hundred-year project, once something happens, it will be infamous for thousands of years."

Merlin was still calm: "The problem now is to solve the problem of whether there is or is not, right? There are a lot of projects that the executive committee will launch next, and it is not an option to always use wooden boards—there is not so much wood in Lingao, so it must be used." Prefabricated panels. Since it is still unknown when the Ministry of Metallurgy will be able to produce enough steel bars, it is not bad for us to try. If it succeeds, the following things will be easy to handle.”

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

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

Most of the people in this Lingao construction company are from construction background, so they have some understanding of bamboo reinforced concrete.Bamboo bars as a substitute for steel bars have been an attractive topic since a long time ago. After all, bamboo has a fast growth period, is cheap, and is easy to process. It can save a lot of cost if it can be used.

But bamboo reinforcement has not been able to replace steel bar all the time, and its reason mainly is that tensile strength is not as good as steel bar, and the best bamboo bar material is also only equivalent to the level of 80% of steel bar, and majority is only 50%.Moreover, the modulus of elasticity of bamboo reinforcement is only one-tenth of that of steel reinforcement.This shortcoming is quite fatal.Moreover, bamboo reinforced concrete also has problems of corrosion, moth-eaten and difficulty in attaching concrete materials, so it is not so simple to use.

The first is to find suitable bamboo tendons. There are many types of bamboo, but the bamboos that can be used to make bamboo reinforced concrete are basically concentrated on bitter bamboo, Mengzong bamboo and light bamboo. Among these three kinds of 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 is 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 it.Immediately, a phone call was made to the Forestry Department under the Ministry of Agriculture Committee.

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

"No, we will send the requirements for harvesting bamboo to your OA in a while. You must make it clear to the logging team that you will harvest bamboo according to our requirements, otherwise it will be useless."

Bamboo is very particular about the raw material of bamboo tendons. First of all, it cannot come from too fertile soil. The bamboo wall of bamboo in too fertile soil is thick, soft and lacks elasticity.The bamboo joints are easy to blacken and break after harvesting - and the bamboo joints are the parts with the highest tensile strength in bamboo.

According to the experience of the Japanese, the bamboo used as bamboo tendons is best harvested from mountain areas where there are mixed cedars and other trees. The bamboo poles are tall and straight, the bamboo joints are short, the wall flesh is thin, and the elasticity is good.The harvesting time should be carried out on a dry and moonless night, because the bamboo harvested on a moonlit night contains more water, and the bamboo juice has a sweet taste and is easy to be eaten by insects.

The harvesting age of bamboo is 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 elasticity.Even logging itself has certain technical essentials.See the materials that Luo Duo found from the big library.Mei Wan smiled wryly and said to Mei Lin: "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. He was afraid that it would be too complicated and he would become the instigator.But now that the work has started, we can't be soft-hearted, so we have to make a confident appearance:

"Complicated procedures show that it is indeed effective. Otherwise, it would be meaningless to write such a book. This is the experience accumulated by predecessors in engineering and construction."

The felled bamboo can only be used as bamboo tendons from the 2nd to the 21st section above the bamboo root. The bamboo joints are required to be dense and well-proportioned, and there are no traces of rot and insects. The plucked bamboo is sent to Bopu for timber Go to the processing factory, where first moderate drying and dehydration - not too dry, must retain a certain amount of moisture, and then in the chemical plant in Bopu to carry out anti-corrosion, waterproof and alkali-proof treatment.

Because of the particularity of the plant, the bamboo tendon absorbs water and swells when the concrete is poured. As the concrete gradually dries, the bamboo tendon shrinks and hardens due to the loss of water, and the shrinkage of the bamboo tendon is larger than that of the concrete. The speed is also much faster, so that, in a short time, the bamboo tendons will loosen and separate from the concrete, and the cohesive force between the two will be lost.

In addition to the problem of dehydration, bamboo tendons also face alkali corrosion.The Japanese test before World War II showed that after 6 months in concrete, the untreated bamboo tendons were eroded by alkali and completely lost their strength.

(End of this chapter)