Prefab Steel dome building
A steel dome building is a common building structure that resembles the upper half of a hollow sphere. The cross-section of the dome is not necessarily a completely spherical shape, but can also be an ellipse. In history, the first famous dome structure was the Pantheon in ancient Rome. At that time, the ancient Romans used concrete arch technology to construct a dome with a diameter of more than 40 meters, which broke through the architectural concept at that time and made the dome technology Begin to replace the original flat roof and become the protagonist of Western churches and palace buildings. However, due to the technical level at the time, the dome of the Pantheon was very heavy, and the load was carried through the overall continuous load-bearing wall. It can be said that it was still an immature prototype dome technology. It was not until the central dome of Hagia Sophia in the middle of the 6th century that the new technology of sail arch was used, and the dome building began to get rid of the load-bearing wall and began to form an extended and compound space, and the solid line unified the practical function and religious aesthetics. After that, the ancient masonry dome technology reached its peak during the Ottoman Empire, but due to the limitations of materials, the scale of the dome also fell into a bottleneck. It can be said that the construction of higher and larger domes is no longer satisfied by masonry materials.
