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A survey of the achievements of steel structure in foreign countries

before 2008, Russia, the usa and Japan were the most effective three countries in the world with regards to steel production, ranking first in the world in turn. Consequently , the construction of steel structures in these countries is booming.
In line with the data, the main market of metal buildings in the usa is situated in industries, such as for example production plants, warehouses and auxiliary facilities; commerce, such as stores, hotels, exhibition halls, hospitals and office buildings; communities, such as for example private and public community activity centers and buildings, such as schools, gymnasiums, libraries and churches; in addition , you will find comprehensive aspects; they respectively account for the steel structure of buildings 46%, 31%, 14% and 9% of the structure.
In the usa, the use of steel structure is extremely common in low-rise buildings. The American Institute of steel structure and the metal building Manufacturing Association jointly compiled the style recommendations for low-rise buildings. The alleged low-rise building refers to the industrial workshop, warehouse, office and other office and community buildings with a floor height of less than 18 meters and a floor quantity of no more than 5 floors, among that the non residential buildings with two floors or less account for 70%.
Light steel buildings have now been widely used in factories, warehouses, gymnasiums, exhibition halls, supermarkets and other buildings in certain developed countries. The alleged light steel identifies the color steel plate whilst the roof and wall, thin-walled steel as purlin and ring beam, to weld the building steel structure.
As a result of advantages of steel structure, such as for example lightweight, high strength and fast construction, additionally it is ideal to use steel structure for high-rise and large-span buildings, particularly for super high-rise buildings and large-span buildings. The highest and largest knot in the worldAll the structures are steel structures, and the stadiums of the previous Olympic Games are mostly steel structures. At present, several pure steel structure buildings in the world are super high-rise buildings: the 102 story, 381 meter high Empire State Building in Ny, USA, that has been built in 1931; the 110 story, 417 meter high World Trade Center in New York, USA, that has been built-in 1969; the 110 story, 443 meter high Sears Tower in Chicago, USA, which was integrated 1970; the 450 meter high double tower oil building in Malaysia, and so on �?
Mega steel structure is a fresh system of high-rise or super high-rise building, that will be produced to generally meet the special function or comprehensive function. Giant steel structure has good building adaptability and potential high-efficiency structural performance, such as for instance NEC building with 43 floors and 180 meters saturated in Chiba County, Japan. The building has large openings and large space courtyards. Its mega structure is a huge space truss system composed of four Mega structural columns and four giant space truss beams. Through analysis, this sort of system has very strong anti push rigidity. Another example may be the new commercial bank building built-in 1997 in Frankfurt, Germany, that has 63 floors and 298. 74 meters high. It's also the highest super high-rise building in Europe in those days.
Large span steel structure is mostly used in multi-functional stadium, convention and Exhibition Center, exhibition hall, waiting hall, aircraft hangar, etc . The first flat grid with the greatest span was 91 m × 122 m (square pyramid) of the Academy of California fitness center in La in the 1960s. In the 1990s, it built the greatest span in the world in Nagoya, JapanThe single-layer latticed shell with a building diameter of 229. 6 meters and a structure diameter of 187. 2 meters adopts a three-dimensional grid, and the joint is a rigid joint that can bear axial force and bending moment. The largest indoor gym in the world is the Atlanta gym, the key Fitness center of the 1996 Olympic Games in the usa. amjsteel It's a brand new form of space structure with promising future. It's mainly made up of cable, pole and membrane.
In 1972, Munich, Germany (cable net building complex covering 74800 square meters of stadium), 1976, Montreal, Canada, 1980, Moscow, 1984, La, USA, 1988, Seoul, South Korea (120 meter diameter gym and 93 meter diameter fencing hall are cable domes), 1992, Spain, Barcelona, San Jodi Stadium (128 meters), 1996, Atlanta, Georgia, USA Dome (186m × 235m cable dome), 2000 Sydney main stadium, Australia (110000 people, two 220m × 70m Hyperbolic Paraboloid Latticed Shells). Airport and hangar are long-span structures, and steel structures are ostensibly found in the project. Like London Heathrow hangar (phase I and phase II) must be a relatively large-scale steel structure project.
light steel house From the ability of the United States, Japan plus some developed countries in Europe, the construction industry has become the main market for steel application. Currently, there was still a gap between China and it. Consequently , the majority of the steel for high-rise buildings in China is imported from abroad. This case ought to be reversed quickly, because it isn't commensurate with the status of China as a significant steel country. Large span steelStructural steel is not as prominent as high-rise steel structures, but design schemes (including buildings and structures) are often awarded the bid abroad. This case is far from the decision of the central government to emphasize the establishment of our very own scientific and technological innovation system, that ought to attract the attention of the construction industry in China.