Briefly describe the characteristics of steel structure

First, the introduction of steel structure

The steel structure is an engineering structure made of steel. It is usually composed of beams, trusses, columns, plates and other components made of steel and steel plates. The parts are connected by welds, bolts or rivets, and some steel structures are partially made of steel wire ropes. Or wire bundles, learn the steel structure should pay attention to its special point.

Second, the advantages and disadvantages of steel structure:

The steel structure has the following advantages and disadvantages: uniform material reliability, uniform steel structure, close to isotropic homogeneous body, the actual working performance of the steel structure is in line with the theoretical calculation results currently used, so the reliability is high. High strength, light weight and light steel have high strength and high modulus of elasticity. Therefore, the steel structural members are small and light. Under the same force, the steel has a small self-weight and can be made into a structure with a large span. Installation and transportation. Good plasticity and toughness The steel structure has good plasticity and toughness, is suitable for bearing impact and dynamic loads, and has good seismic performance. Solderability Solderability refers to the property of steel to maintain the integrity of the welded portion without cracking during and after welding. Due to the development of welding technology, the use of welded structures greatly simplifies the connection of steel structures. It is easy to mechanize the manufacture of steel structure. It is made in the factory by the profiled profile and steel plate. It is easy to mechanize manufacturing, with high production efficiency, high speed, high precision of finished products and easy quality assurance. Easy installation and short construction period The steel structure is easy to install and the construction period is short. The economic benefits of investment can be realized as soon as possible. The water tightness and airtightness of the steel structure with good sealing properties are better as normal pressure and high pressure vessel structures and large diameter pipes. Good heat resistance experiments have confirmed that the steel does not change much at normal temperature to 150 degrees, so the steel structure is suitable for use in hot workshops. After the surface temperature of the steel with poor fire resistance reaches 300-400 degrees, the strength and elastic modulus decrease significantly, and the temperature drops to zero at 600 degrees, so the fire resistance of the steel structure is poor. Poor corrosion resistance Corrosive in the environment of wet and corrosive media, requiring regular maintenance.