H-shaped steel application characteristics

Hot rolled H-beam steel has excellent mechanical properties and excellent service performance by distributing the aspect ratio of section size reasonably according to different applications.

The design style is flexible and rich. In the case of the same beam height, the opening of the steel structure is 50% larger than that of the concrete structure, which makes the building layout more flexible.

Light structural weight. Compared with the concrete structure, the weight of the structure is lighter, the reduction of the structure's weight reduces the internal force of the structure design, which can make the building structure foundation treatment requirements are low, the construction is simple, and the cost is reduced.

The steel structure based on hot-rolled H-shaped steel has scientific and reasonable structure, good plasticity and flexibility, and high structural stability, which is suitable for building structures with large vibration and impact loads and strong resistance to natural disasters, especially for some building structures with multiple earthquake zones. According to statistics, in the world's devastating earthquake disaster of magnitude 7 or more, the H-shaped steel mainly steel structure buildings have the least degree of damage.

Increase the effective use area of the structure. Compared with the concrete structure, the section area of the steel structure column is small, which can increase the effective use area of the building, depending on the different forms of the building, can increase the effective use area of 4-6%.

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

Easy machining, structural connection and installation, but also easy to remove 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, resulting in less noise and less dust; Second, due to the reduction of self-weight, less soil extraction for foundation construction, less damage to land resources, in addition to a large reduction in the amount of concrete, reduce the amount of rock excavation, conducive to the protection of 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 based on hot rolled H-shaped steel has a high degree of industrial production, which is convenient for mechanical manufacturing, intensive production, high precision, easy installation, easy quality assurance, and can be built into a real house production factory, bridge production factory, industrial plant production factory, etc. The development of steel structures has created and driven the development of hundreds of new industries.

The construction speed is fast, the area is small, and it is suitable for all-weather construction, and it is little affected by climatic conditions. The construction speed of the steel structure made of hot-rolled H-shaped steel is about 2-3 times that of the concrete structure, the capital turnover rate is doubled, and the financial cost is reduced, thus saving investment. Taking the "Jinmao Tower" in Pudong, Shanghai, as an example, the main body of the structure with a height of nearly 400 m was completed in less than half a year, while the steel-concrete structure took two years to complete.