Low cost and fast assembling prefabricated steel warehouse building in Zimbabwe

The low-cost and fast assembling prefabricated steel warehouse construction industry in Zimbabwe mainly requires the performance of steel in the following five aspects: 1) structural stress performance. The yield strength requirements for building steel are increasing, and the use of high-strength structural steel can reduce the weight of the building structure and meet the stress requirements of special and complex structures; 2) Seismic performance. To meet seismic requirements, steel is required to have a lower yield to strength ratio, higher plastic deformation capacity, and plastic energy dissipation capacity, thereby improving the overall ductility of the structure and increasing the safety margin of low-cost and rapidly assembled prefabricated steel warehouse buildings in Zimbabwe under seismic loads; 3) Solderability. To ensure welding quality and simplify welding processes, it is required to further improve the weldability of building steel. In order to prevent layer tearing during the welding process, it is also necessary to have good Z-direction performance; 4) Corrosion resistance. In order to reduce the maintenance cost and improve the fire resistance performance of low-cost and quickly assembled prefabricated steel warehouse buildings in Zimbabwe, it is required to provide fire-resistant and weather resistant steel according to the needs of different building structures, greatly improving the corrosion resistance of the steel. It can be used exposed under general climatic conditions, and the yield strength at 600 ℃ can be guaranteed to be no less than two-thirds of the room temperature yield strength; 5) Low temperature performance. Can develop thick steel plates that do not require preheating welding or have lower preheating temperatures. A type of ultra-low carbon bainite non quenched and tempered TS750MPa thick high-strength steel plate developed in Japan does not require preheating during welding when the thickness is t ≥ 75mm.

In addition, Zimbabwe's low-cost and rapidly assembled prefabricated steel warehouse construction steel should be more diversified in terms of specifications and varieties, such as thick and ultra thick plates, cold-formed thin-walled steel, etc. Rolling plates should flexibly adapt to requirements such as varying thickness, width, and height according to design requirements, so as to provide multiple choices for the design performance of low-cost and quickly assembled prefabricated steel warehouse buildings in Zimbabwe. The construction section should be more reasonable, reducing the use of welded steel sections, improving work efficiency, and reducing engineering cost.