Chapter 495: Conception of Dome City

Genius remembers this site address in one second: []The fastest update! No ads! The concept of a dome city is not new. As early as the last century, some architects and sci-fi creators have already proposed such a concept.
However, it was limited by various factors such as the environment and technology at the time. Although some people tried it, they ended up without problems.
In the imagination of these people, the dome city should be covered by a huge dome to isolate the influence of unfavorable weather such as rain and snow outside, and at the same time can control and adjust factors such as light and temperature to construct a perfect living environment.
There are not many such plans and designs, but because of the huge capital investment and the need for strong industrial and technical support, so far, this idea has always remained on paper.
Although there are also some buildings that can be called domes, they do not meet Chen Xin's requirements.
One of the most important points, of course, is that the scale is not large enough.
The domes currently built by human beings are mostly just individual buildings. No matter how large they are, they are almost on the scale of a stadium or an airport or station. Compared with the scale of a city-level predicted by Chen Xin, it is naturally a gap. Far away.
However, these dome buildings still gave Chen Xin a lot of reference.
In fact, an important reason restricting the emergence of dome cities is that the technology is not very useful under normal circumstances.
Although a huge dome covering the city sounds like a good thing to isolate from the intrusion of rain and snow and other disasters, the other impacts that follow need to be considered comprehensively.
Coupled with the constraints of various factors such as construction cost, construction difficulty itself, and the larger the city, the larger the dome needed, this kind of thing looks very beautiful and very future becomes unrealistic.
As for another important factor, that is the dome itself.
The dome used by Chen Xin’s scientific research center was a steel structure and a glass exterior wall. Although new materials were used, the overall weight was still not light.
Fortunately, the scientific research center is not too big, and it can be supported by steel structure and glass exterior wall. In addition, the exterior wall has snow removal measures, so there is no risk of excessive load bearing and overall collapse.
But to expand the dome to the point where it can cover an entire city, the total weight of the steel structure and glass exterior wall will reach an astonishing level.
So if you want to really build the dome, the material and structure of the dome itself need to be carefully considered and designed.
The simpler method is naturally to lower the height of the dome and enlarge its arc to make it into a flat arc similar to the dome of the scientific research center, instead of really making a hemispherical cover.
This can save materials and reduce the weight of the dome. Under the current circumstances, it can support the dome that covers a city.
The curved dome itself can effectively prevent the accumulation of snow. As long as it is equipped with a suitable snow removal system, the dome itself does not worry about the possibility of falling snow and collapse.
But even so, Chen Xin does not intend to continue to use the glass curtain wall as the outer wall of the dome.
The first is naturally the weight of the glass itself, and the dome to be built is a dome covering a city. This glass consumption is undoubtedly staggering. He doubts whether it is still possible to make up so much glass for composite construction needs.
Moreover, the use of glass domes, the difficulty of construction, and the construction period are issues that need to be dealt with seriously.
In contrast, another material is undoubtedly more suitable.
This material is the membrane, and the more formal name is ethylene-tetrafluoroethylene copolymer membrane.
The ethylene-tetrafluoroethylene copolymer film is a crystalline high polymer with a melting point of ~. It can self-extinguish when burning. Its high shear mechanical strength and low temperature impact resistance are the best among the existing fluoroplastics. It can have high impact strength from room temperature to -, with stable chemical properties, good electrical insulation and radiation resistance.
It can be said that it is the most ideal material for the dome among all the materials at this stage.
This material has been used in the 1990s, as a covering or greenhouse film material.
The Water Cube, one of the main venues of the Yan Guo Nian Olympic Games, is also an exterior wall made of this material.
If you use this material to make the dome, you can achieve the lightest quality while ensuring sufficient strength.
As for the problem of cold protection and heat preservation, it is only necessary to cover the outer layer of the membrane with a layer of heat preservation material to solve this problem.
With such a large dome that can be insulated and cold-proof, the area covered by the dome can leave the refuge deep underground and resume life on the ground before the disaster.
After all, it has been two or three years since the disaster came. Although there are still meteorites falling from the sky, the number has been greatly reduced, and the surface is no longer so dangerous. The safety of the dome city is still adequately guaranteed.
And even if it is hit, the repair of the membrane damage is undoubtedly simpler than that of the glass curtain wall, and it is also easier to maintain and repair.
After solving the problem of the dome, there is no need to worry about the remaining urban construction problems themselves. The city builders of Yan Country have enough experience in this regard to solve all these problems.
After such calculations, Chen Xin discovered that the conditions for building a dome city are actually available, and there is no technical barrier to step forward.
If the dome can be built with a dome to block the external cold, even without a large heating facility such as an energy tower, the temperature inside the dome will not be too low.
As long as the internal heat is not lost, the ambient temperature in the dome can be maintained within an acceptable range, so that people who originally needed to escape the cold in underground shelters can return to life on the surface.
Not to mention that as long as an energy tower is erected in the dome, the temperature in the dome can be made the same as that of the scientific research center, so that the four seasons are like spring, and even support a basic need to restore the ecological environment.
Thinking of this, Chen Xin couldn't help but sorted it out quickly, and planned to report it to the country to promote the construction of the dome city.
However, before submitting the report, Chen Xin felt that he should come up with a set of design plans first, rather than just handing in such a rough plan.
Although the construction of a dome city is theoretically feasible, how much impact such a huge dome will bring, how difficult is the construction, whether it can be successfully built in this environment, if it is to be built, where should it be built? How to complete the construction is something that needs to be considered.
So after Chen Xin hesitated for a while, he decided to perfect the whole plan first, and at least after completing the feasibility demonstration, he would report it.