Chapter 825

After the construction of the defense line in the Middle East began to go smoothly, Chen Xin had some ideas about the dome urban design map that was turned out and rearranged.

The state wants to restart the construction of the dome city. He has confirmed this intention to the high-rise. The high-rise does have this idea, but the high-rise wants to adjust the original design scheme of the dome city.

As has been said before, this design scheme was originally experimental in nature. The purpose is to study the coexistence between human beings and the ecological environment and the restoration of the ecological environment after a disaster.

According to the original design, after the dome city is built, it will not be finished. A large number of scientific research institutions and staff will maintain it, cultivate and reproduce species in it, so as to establish the ecosystem designed by Chen Xin, so that it can maintain its self circulation and stability.

In general, this is not so much a city as a large research facility.

For today's Yanguo, the restart of the construction of the dome city is obviously not to continue the research project, but to accommodate the people.

Since the sky was purified and the sun rose again, the country has been planning to bring people living underground back to the ground.

After all, as we all know, people need to bask in the sun. Living underground for a long time will have various negative effects on their bodies. There is no way to live in underground shelters, but if the situation improves, people should return to the ground to live again.

In fact, after the sun came out again, people in some areas and cities began to transform their shelters and prepare to return to the ground.

If it had not been delayed by the war with alien creatures, the country would have wanted to start promoting this aspect.

Restarting the construction of the dome city is an attempt to this end.

After all, life in the dome city is basically no different from that in the city before the disaster, except that there is a cover on the top of the head.

Therefore, it is now necessary to adjust the functions of the Dome City from an experimental scientific research city to a more professional living city.

In fact, it is not difficult to do this. Today's dome new city is such a city. The dome new city, which accommodates more than 100000 immigrants, is now an out and out living city, but in some aspects, it is different from a simple living city because of the limitations of the original urban design and the needs of supporting war.

Chen Xin's drawings after "optimization" again are very appropriate.

After all, this is a city designed simply to accommodate the population and meet the needs of life.

This drawing was not only sent to the senior level responsible for repairing the defense line in the Middle East, but also received by the senior level in China.

However, the cost of Dome City is still too high. Even if China can afford to build a new dome, it is still a heavy burden.

Therefore, the senior management expressed to Chen Xin whether the cost can be reduced, hoping that he can optimize the drawings again, so that the country can at least afford to build two dome cities at the same time.

Facing the request put forward by the high level, Chen Xin did not refuse, but it was not easy to realize.

To reduce the construction cost, in addition to reducing the material input, it is to reduce the labor cost. After all, the construction cost is mainly these, and the land does not need to be included in the cost now. The land belongs to the state and does not need to be counted as money.

However, both materials and labor are not good for compression.

In terms of labor cost, there is no room for compression, unless we can improve the current construction mode on a large scale and complete more work with fewer workers, which can reduce the cost.

But this is not an easy thing to do, and even if the labor cost is reduced, it will certainly not meet the requirements that the high-level hope that the country can afford the construction of two dome cities at the same time.

After all, the labor cost does not account for the majority for the Dome City, and the greater cost is actually in the materials for building the dome.

When designing the supporting structure of the dome, Chen Xin deliberately chose light materials, and even the outer layer of the dome was made of EFTE airbag and light thermal insulation materials instead of heavy materials such as glass.

These lightweight materials greatly reduced the self weight of the dome itself, while maintaining sufficient structural strength. In addition, some designs added by Chen later, there was the large dome of the dome new city, which sheltered more than 100000 people in the whole city.

However, the use of these materials is also the largest part of the construction cost of the dome city.

Even before the disaster, these materials themselves were relatively high-cost materials, but at that time, there was enough industrial scale to produce in mass, which could naturally suppress the cost to an acceptable level.

However, the industrial scale is obviously not as large as that before the disaster, and the domestic industrial production capacity also supports Europe and the Middle East. There are not many resources that can be squeezed out.

If we can not reduce the cost, with the current affordability of the country, we can only afford the construction of a dome City, and even some are tight.

However, if these materials are replaced with cheaper materials, it will affect the weight and structure of the dome. If you want to do so, you must overturn the original design, which is tantamount to pushing everything down and starting over.

Even for Chen Xin, this is not an easy thing to accomplish.

However, he convened relevant researchers to study this issue and see how to meet the requirements put forward by the high-level.

The first issue raised is the construction. Some people think that the current 3D printing technology can be used for the construction of dome cities. After all, this printing technology is convenient and can save labor investment.

Chen Xin quickly adopted this suggestion and designed a new 3D printing equipment that can be used for dome construction. As long as the materials are complete, the supporting structure of the dome can be printed directly.

But this is not enough. Although this has effectively reduced some construction costs, it still can not meet the standards required by the high-level.

If you want to really reduce the cost, you still have to make an article on the materials.

In the face of this problem, these researchers convened by Chen Xin put forward two diametrically opposite schemes.

One party hopes to develop new materials. As long as it can develop materials that also meet the construction requirements and have low cost, it can meet the requirements of the high-level.

On the other hand, we hope to work hard on the structure. By optimizing the structure and replacing the originally expensive materials with cheap materials, we can also meet the requirements of high-rise buildings.

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