Reinforcement Technology Of Steel Structure Damage

If there are some damages in steel structure, we need solve problem in time. There are five factors that caused steel structure damage. Firstly, the load changed, the service extended, rules and regulations changed. Secondly, structure deformation,twist,disability or depression with various accidents. And it also section weaken, rod warping, connection cracking. Thirdly, component or connection deformation, cracking and warping which caused by temperature effects. Chemical corrosion make the section of steel structure weaken. Certainly, other illegal use and operation will lead to damage.

There are three reinforcement method to steel structure. They are section reinforcement, change the calculation diagram and prestressed cable method. Section reinforcement is using the steel to reinforcement in local or along the member length. The method of changing calculation diagram is that adding support, adjust load distribution,reduce stress levels, decrease the stress peak. Prestressed cable method is that strengthening weak links with high-strength cable or improving the whole structure bearing capacity, rigidity and stability.

Once the earthquake occurred, we must first maintain a clear, cool headed and determine shock condition promptly. Don’t jump off building in panic. This is very important. Besides you can hidden under solid furniture or corner. Certainly you can also transferred to the kitchen which has small hall and many load-bearing walls or even toilet. Because these places has strong combining power, especially the pipe has good support force after some treatment, and seismic coefficient is larger.

Steel Structure Of Bird Nest In China

Steel structure is very popular in developed country. There is very broad prospects of development to China steel structure manufacturer. Generally speaking, the beam use H type steel. And connected nodes use high-strength bolts or welding. At present steel structure housing is popular in the industrial developed countries. Fireproof material mainly adopts the fireproof paint or fire board coating. There are about 50% residential building with steel frame in Japan and 20% in America. It has been formed residential industrialization of steel structural system in Finland, Sweden, Denmark and France. The requirements to high-rise and long-span construction are also getting higher and higher because of human cultural life continues to improve.

Steel structure has the advantages of light weight, high strength and fast construction. So it is very ideal that adopt steel structure for high and long span, especially for super high and super long span. At present, the most highest and biggest constructions all adopt steel structure in the world. By the way, the Olympic Games venues also mostly use steel structure.

Bird nest which made by China steel structure manufacturer is regarded as main stadium in Beijing Olympic Games. Bird nest is a venues with largest investment and technological content. It is also a key project which is in highest concern, highest technical content and most difficult in the Olympic Games projects. Bird nest steel structure are all completed with welding and without any screw. Stell structure of bird nest has been coated antirust paint with five layers. The antirust paint has functions of anti-corrosion, moisture-proof and fireproof. Besides the bird nest has two two layer of the film. The upper lay is ETFE and the lower one is EPFT. These can prevent audience in bird nest from rain and sun.

Economy H Section Steel

H section steel is a kind of new economy construction steel. Section shape of H section steel is economic and reasonable. It has good mechanical properties. Each point extended uniform and internal stress is small when rolling. Compared to the ordinary I-steel, it has the advantages of big section modulus, light weight and saving metal. H section steel can make the building structure reduce about 30% to 40%. The inner and outer side of the leg are in parallel and leg end is a right angle. Assembled into components can save welding and riveting work. H section steel is often used for the large building which needs big bearing capacity and good stability of section. Such as factory buildings and high-rise buildings. Certainly H section steel is also suitable for bridge, ship, lifting transport machinery, equipment foundation, support, foundation pile.

H section steel is belong to efficient and economic cutting surface profile. It can make steel in higher performance and improve the bearing capacity due to its reasonable section shape. Flange of H section steel is widened, the inner and outer surface are both parallel. This can convenient to the bolt that connect with other members. Its size is reasonable and model is complete. So it is also easy to chosen by designers.