October 27, 2022
1. High structural strength
Compared with the I-beam, the section modulus is large, and the metal can be saved by 10-15% under the same bearing conditions.
2. Flexible and rich design style
With the same beam height, the steel space is 50% larger than the concrete space, thus making the building layout more flexible.
3. Light weight of structure
Compared with the dead weight of concrete structure light, the reduction of the dead weight of the structure, reduce the internal force of the structure design, can make the foundation of the building structure treatment requirements are low, the construction is simple, the cost is reduced.
4. High structural stability
The steel structure based on hot rolled H-section steel, its structure is scientific and reasonable, good plasticity and flexibility, high structural stability, suitable for bearing the vibration and impact load of the building structure, strong ability to resist natural disasters, especially suitable for some of the earthquake occurred zone of the building structure. According to statistics, in the world occurred 7 magnitude above the devastating earthquake disaster, H - shaped steel structure building mainly suffered the least degree.
5. Increase the effective use area of the structure
Compared with concrete structure, steel structure column section area is small, thus 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 obviously save labor and material, reduce the consumption of raw materials, energy and labor, low residual stress, good appearance and surface quality.
7. Easy for machining
Easy structural connection and installation, but also easy to remove and reuse.
8. The environmental protection
The use of H steel can effectively protect the environment, specific performance in three aspects: one is compared with concrete, can be used dry construction, the noise is small, less dust; Second, due to the weight reduction, the foundation construction of soil is less, the destruction of land resources is small, in addition to a large number of reduce the amount of concrete, reduce the amount of rock excavation, is conducive to the protection of the ecological environment; Third, after the service life of the building structure expires, after the structure is dismantled, the amount of solid waste generated 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, convenient installation, easy to ensure the quality, and can be built into real housing manufacturing factories, bridge manufacturing factories, industrial plant manufacturing factories, 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, less affected by climate conditions. The construction speed of steel structure made of hot rolled H-section steel is about 2-3 times that of concrete structure, the capital turnover rate is doubled, the financial cost is reduced, and the investment is saved. Taking the Jinmao Building in Pudong, Shanghai, as an example, the top of the structure is completed in less than half a year, while the steel-concrete structure needs two years.
