H-shaped steel application characteristics

　　Hot-rolled H-shaped steel reasonably distributes the aspect ratio of the cross-section size according to different uses, and has excellent mechanical properties and superior usability.

　　The design style is flexible and rich. When the beam height is the same, the bays of the steel structure can be 50% larger than those of the concrete structure, making the building layout more flexible.

　　The structure is light in weight. It is lighter than the self-weight of a concrete structure. The reduction of the self-weight of the structure reduces the internal force of the structural design, which can make the foundation processing requirements of the building structure lower, the construction is simple, and the cost is reduced.

　　The steel structure mainly made of hot-rolled H-shaped steel has a scientific and reasonable structure, good plasticity and flexibility, and high structural stability. It is suitable for building structures that can withstand large vibration and impact loads. It has strong resistance to natural disasters and is especially suitable for some multi-purpose buildings. Building structures in earthquake zones. According to statistics, when a devastating earthquake of magnitude 7 or above occurs in the world, steel structure buildings dominated by H-shaped steel suffer the least damage.

　　Increase the effective use area of the structure. Compared with concrete structures, the cross-sectional area of steel structure columns is small, which can increase the effective use area of the building. Depending on the different forms of the building, the effective use area can be increased by 4-6%.

　　Compared with welding H-shaped steel, it can significantly save labor and materials, reduce the consumption of raw materials, energy and labor, has low residual stress, and has good appearance and surface quality.

　　It facilitates machining, structural connection and installation, as well as removal and reuse.

　　The use of H-shaped steel can effectively protect the environment, which is reflected in three aspects: First, compared with concrete, dry construction can be used, which produces less noise and less dust; second, due to the reduced weight, less soil is taken for foundation construction, which is The damage to land resources is small. In addition, the amount of concrete is greatly reduced, and the amount of rock excavation is reduced, which is conducive to the protection of the ecological environment. Third, after the service life of the building structure expires, the amount of solid waste generated after the structure is dismantled is small, and the recycling value of scrap steel resources is high. .

　　The steel structure mainly made of hot-rolled H-shaped steel has a high degree of industrialization, is convenient for mechanical manufacturing, intensive production, high precision, easy installation, and easy to ensure quality. It can be built into a real house manufacturing factory, bridge manufacturing factory, industrial plant manufacturing factory, etc. . The development of steel structures has created and promoted the development of hundreds of emerging industries.

　　The project construction speed is fast, the area is small, and it is suitable for all-weather construction and is less affected by climate conditions. The construction speed of steel structures made of hot-rolled H-shaped steel is about 2-3 times that of concrete structures. The capital turnover rate is doubled, which reduces financial costs and thus saves investment. Taking the "Jinmao Tower" in Pudong, Shanghai, my country as an example, the structural main body with a height of nearly 400 meters was completed in less than half a year, while the steel-concrete structure required a two-year construction period.