開発 of 鋼 構造

しかし、 中国 持っていた 傑出した 成果 in iron structure in the early days, it remained at the level of iron buildings for a long time. Until the end of the 19th century, China began to use modern steel structure.After the establishment of New China, the application of steel structure has been greatly Developed, both in quantity and quality are far beyond the past.でも、 The floor of the light steel structure is composed of cold-formed thin-wall steel frame or composite beam, OSB structural plate on the floor, support, connecting parts, etc. The materials used are oriented particleboard, cement fiber board, and plywood. These lightweight floors can withstand loads of 316 to 365 kilograms per square meter..これらの 軽量 床 缶 耐え忍び 負荷 of 316 to 365 kilograms per square meter.
The number of steel structure buildings marks the economic strength and economic development of a country or a region. After entering the year 2000, China's national economy has grown significantly, the national strength has increased significantly, steel production has become a world power, in the construction put forward to "actively and reasonably use steel", from now on got rid of the "restriction of steel" constraints, steel structure building in the economically developed areas gradually increased. Especially around 2008, under the promotion of the Olympic Games, there has been a boom in steel structure construction, strong market demand, to promote the rapid development of steel structure buildings, built a large number of steel structure venues, airports, stations and high-rise buildings, among which, some steel structure buildings in the production and installation technology has a world-class level, such as the Olympic National stadium and other buildings.
After the Olympic Games, steel structure building has been popularized and sustained development, steel structure is widely used in construction, railways, Bridges and housing, etc., there are tens of thousands of steel structure enterprises of various sizes, and the world's advanced steel structure processing equipment is basically complete, such as multi-dimensional drilling machine, multi-dimensional steel pipe intersecting line cutting machine, corrugated plate automatic welding machine. And now the processing and production level of hundreds of steel structure enterprises has the world's advanced level, such as steel structure production and first-class enterprises. In recent years, steel production has reached more than 600 million tons per year, and steel varieties can fully meet construction needs. Steel structure design specifications, steel structure material standards, steel structure engineering construction quality acceptance specifications, as well as various professional specifications and enterprise construction methods are basically complete.