The influence of structural form
Different structural forms are one of the important factors affecting the cost of Steel Structural Parts. For example, the portal-type rigid frame structure is relatively simple, and the amount of steel may be relatively small. It is more suitable in some small industrial plants and other buildings that do not have extremely high space requirements. The beam-column connection of this structural form is simple, and the processing and installation costs are also low. Although the grid structure has good mechanical performance in large-span spaces, it is difficult to design and process due to its large number of rods and complex nodes, which will increase manufacturing costs. In addition, like a truss structure, if the design is unreasonable, it may lead to uneven distribution of internal forces in the rods. The cross-section size of the rods needs to be increased to ensure safety, thereby increasing the amount of steel and cost.
Influence of load values and design standards
The difference in load values and design standards in the design plan has a significant impact on the cost. If the design is too conservative and the wind load, snow load or live load is overestimated, the cross-sectional size of Steel Structural Parts will increase. For example, in some areas with low wind speed and little snow, if designed according to the load standards of areas with high wind speed and heavy snow, the beams and columns of the steel structure will be thicker and the amount of steel will increase significantly. Moreover, higher design standards may require the use of higher strength grades of steel or more stringent quality inspection methods, which will undoubtedly increase costs. On the contrary, if the load value is too low, although the initial cost is reduced, there may be safety hazards, and the subsequent maintenance and reinforcement costs may be very high.
The impact of node design
Node design plays a key role in the cost of steel structures. Reasonable node design can reduce steel waste and processing difficulty. For example, although welding nodes have high connection strength, the welding process requirements are high and the inspection cost is also high. If a large number of complex welding nodes are used, labor and inspection costs will increase. Bolted joints are easy to install and disassemble, and the construction speed is fast, which can reduce on-site installation costs. However, improper selection of bolt quality and quantity, or unreasonable node design that requires special customized bolts will also increase costs. In addition, the design of nodes will also affect the overall stability of the structure. Unreasonable nodes may require additional support members to ensure stability, thereby increasing costs.
Impact of material selection
The choice of materials in the design scheme has a direct impact on the cost of Steel Structural Parts. The prices of steel products of different strength levels and materials vary greatly. Although the price of high-strength steel is high, it can reduce the cross-sectional size and reduce the amount of steel used; the price of ordinary steel is lower, but more amount may be needed to meet the structural strength requirements. For example, in some steel bridges where there are strict weight restrictions, it may be more cost-effective to use high-strength steel. At the same time, the choice of steel surface treatment materials and fireproof and anti-corrosion coatings will also affect the cost. High-quality anti-corrosion coatings can extend the service life of Steel Structural Parts but are more expensive. When designing, the use environment and life requirements of the steel structure need to be comprehensively considered when selecting. Suitable materials.
