Several Forms Of Steel Structure Development

The steel structure construction industry has developed rapidly, and the steel structure form has also derived a variety of forms.
1. Light steel structure
Light steel structure can reduce the weight of the structure, give full play to the material characteristics, and reduce the project cost. Portal rigid frame steel structure has been widely used in industrial plants, supermarkets, etc., but it still needs to be finalized and industrialized; Light steel structures using high-efficiency and economical cross-sectional steels such as cold-forming steel and profiled steel plates will be widely used in light steel structure residential buildings; In addition, the color plate arch corrugated roof should also be vigorously developed due to its significant economic value.
2. Prestressed steel structure
The use of high-strength steel and the appropriate prestress of the steel structure can increase the bearing capacity of the structure, reduce the amount of steel used and reduce the weight of the structure. At present, China's prestressed steel structure still has a big gap compared with foreign applications, so prestressed technology is an important direction for the development of steel structure.
3. Combined structure
The combined structure of steel and concrete is to combine two materials with different properties to bear the common force and give full play to their respective advantages, so as to achieve the purpose of improving bearing capacity and saving materials. Profiled steel plate composite building cover has been widely used in high-rise buildings, profiled steel plate can be used as formwork and tensile steel bars, not only reduce the thickness of the floor, but also facilitate construction and shorten the construction period; Steel and concrete composite beams can save 4%-15% of steel, reduce beam height and save space; Steel tube concrete columns have good plasticity and toughness, good seismic performance, and their fire resistance is better than that of steel columns, which has good development prospects.
4. Large span spatial structure
The large-span spatial structure has developed greatly in China, and China has built a large number of various types of steel grid structures, which belong to the space structure system and save a lot of steel. In the future, in addition to improving the design method, we should also actively research and develop new spatial structures that are more steel-saving, such as hybrid structures that combine several different structures such as grid frame, suspension cable, and supply, which is a novel and unique structural form in architectural form and very reasonable force, which is a direction for steel structure form innovation.