Wood structure building is much superior to stone building in saving materials, labor and construction time. On the premise of achieving the same requirements and effects, China architecture is the most economical building in the world, in other words, it is also the most economical technical scheme. Especially in the construction time, contemporary buildings of the same scale in China are many times faster than those in the west. Therefore, even if there were enough stones and enough labor in ancient China, I believe I would not consider building a behemoth that can last forever.

In the Tang Dynasty, the wooden buildings in China have formed a set of strict production methods. The book Architectural Style, edited by Li Jie in the Northern Song Dynasty, is the first regulation on the design, construction, materials and number of quota of wooden structures in China and even the world.

It is stipulated in the house design that "the system of building houses is based on materials." There are eight grades of materials to measure the size of the house, so use. "There are eight kinds of component sections, which are selected according to the span size. According to the principle of material mechanics, the relationship between the cross-section and span of wood members at that time conformed to the principle of equal strength, which showed that China had been able to select materials through proportional relationship in Song Dynasty, which embodied the principle of bending strength of beams.

China's wood structure architecture art, which is a combination of beams and columns, has a unique style and has been further developed in pavilions, terraces, corridors and pavilions of palaces and garden buildings, and is an integral part of the splendid culture of the Chinese nation.

Extended data:

Classification of wood structure buildings:

1. Plate structure connected by split ring, toothed plate or nail:

A structure consisting of wooden boards with a thickness less than 10 cm. The thickness of the plate is small, it can be dried in a short time, the structural deformation is small, and the plate has no complete annual rings. Warpage caused by inconsistent tangential and radial shrinkage during drying can be controlled by pressurization. The internal stress caused by uneven drying is very small, and even if cracks appear, the safety of the structure will not be affected by slight cracking. .

2. Plate structure connected by split ring:

The split ring can transmit large internal force and can be used for joint connection and joint connection. The cracked ring can be standardized and the groove can be dug by machine, which can make the production of wood structure enter industrial production.

The split ring is supported by the ring groove and connected by wood shear, and its safety is controlled by the shear strength of brittle wood. The split ring is hidden after installation and is not easy to check. Therefore, it is gradually replaced by toothed plate.

3. Plate structure with toothed plate connection:

Punched toothed plate is directly pressed into wood by oil press, which is simple to manufacture. Compared with split ring connection, it has higher sealing performance, reduces structural deformation and is convenient for inspection. Toothed plate disperses load and transmits force through a large number of teeth, which has good toughness and is more reliable than split ring connection. In foreign countries, toothed plates are often used to connect truss joints and nodes.

4, nail connection plate structure:

Most of them are made on site. Because of its convenient processing, it can be made into reasonable structural forms such as arc truss, which has been widely used in the Soviet Union. China has been used in large-span roof structures such as gymnasiums and warehouses. Because of the large deformation of nail connection in the later stage, its application is limited to some extent.

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