H beam is widely used in today’s steel structure construction. The surface of H-section steel has no inclination, and the upper and lower surfaces are parallel. The section characteristic of H – beam is better than that of traditional I – beam, channel steel and Angle steel. So what are the characteristics of H beam?
1. High structural strength
Compared with the I-beam, the section modulus is large, and the bearing condition is the same at the same time, the metal can be saved by 10-15%.
2. Flexible and rich design style
In the case of the same beam height,the steel structure is 50% larger than the concrete structure, making the layout more flexible.
3. Light weight of structure
Compared with the concrete structure, the weight of the structure is light, the reduction of the weight of the structure, reduce the internal force of the structure design, can make the building structure foundation processing requirements are low, the construction is simple, the cost is reduced.
4. High structural stability
The hot rolled H-beam is the main steel structure, its structure is scientific and reasonable, good plasticity and flexibility, high structural stability, suitable for bearing vibration and impact load of large building structure, strong ability to resist natural disasters, especially suitable for some building structures in earthquake zones. According to statistics, in the world of magnitude 7 or more devastating earthquake disaster, H-shaped steel mainly steel structure buildings suffered the least degree.
5. Increase the effective use area of the structure
Compared with concrete structure, steel structure column section area 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%.
6. Save labor and materials
Compared with welding H-beam steel, it can significantly save labor and materials, reduce the consumption of raw materials, energy and labor, low residual stress, good appearance and surface quality
7. Easy to mechanical processing
Easy to attach and install structurally, but also easy to remove and reuse.
8. Environmental Protection
The use of H-section steel can effectively protect the environment, which is reflected in three aspects: first, compared with concrete, it can use dry construction, resulting in less noise and less dust; Second, due to the weight reduction, less soil extraction for foundation construction, small 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 garbage generated after the structure is dismantled is small, and the recycling value of scrap steel resources is high.
9. High degree of industrial production
The steel structure based on hot rolled H beam has a high degree of industrial production, which is convenient for machinery manufacturing, intensive production, high precision, easy installation, easy quality assurance, and can be built into a real house manufacturing factory, bridge manufacturing factory, industrial plant manufacturing factory, etc. The development of steel structure has created and driven the development of hundreds of new industries.
10. The construction speed is fast
Small footprint, and suitable for all-weather construction, little influence by climate conditions. The construction speed of the steel structure made of hot rolled H beam is about 2-3 times that of the concrete structure, the capital turnover rate is doubled, the financial cost is reduced, so as to save investment. Taking “Jinmao Tower” in Pudong of Shanghai, the “tallest building” in China as an example, the main body of the structure with a height of nearly 400m was completed in less than half a year, while the steel-concrete structure needed two years to complete the construction period.
Post time: May-19-2023
