How to choose space frame processing materials?

How should space frame processing be selected in the material selection process?

At present, in many steel structure projects, it is necessary to save costs in terms of construction and ensure the quality of the project, it seems a contradictory problem. Choose a variety of economical materials in the actual selection of materials. What are the aspects of today’s space frame processing in terms of material selection technology for? As my country’s steel production has exceeded 200 million tons, steel varieties tend to be diversified. Various new building materials, such as light-weight insulation wall panels, color-coated steel plates, and floor panels, have been continuously developed and applied. In the design stage, the steel structure has more room for material selection. The choice of material is different, the direct cost is different, and the total cost is different. Effective selection of building decoration materials in design, control of raw material prices and engineering quantities list are effective ways to control project budgets.

1. Steel structure space frame management system wall material: The cost of wall material generally accounts for 15%-25% of the construction cost. In the steel structure system, it is very important to choose auxiliary, economical and energy-saving wall materials. The key wall materials selected by the design plan at this stage are concrete insulation exterior wall panels, lightweight aerated concrete, NALC boards, etc. The key materials for interior and exterior walls are modified gypsum board, GRC interior wall panels, and concrete insulation sandwich cores. Board etc.
2. Steel specifications and materials: due to the increase in the number of steel varieties, the structural design of the components. For example, the frame column can be composed of hot-rolled h beam, welded h beam, spiral welded round steel pipe, and welded galvanized square steel. The material can be q235 pure carbon steel or q345 low alloy steel. When designing, high-strength materials should be used as much as possible. For example, using Q345 steel can save 15%-25% of steel than using Q235 steel, and the saving ratio for stretching or bending members is larger. Economic profiles such as hot-rolled H-section steel and T-section steel should be selected during design. In some cases, the use of hot-rolled H-beams and beams may be slightly more than the use of welded H-beams, but it may be more advantageous in terms of processing cost and construction time.
3. Space frame steel structure building floor: According to the function of the building cover structure system during design, the floor can adopt two forms.

The floor can be made of ordinary galvanized steel sheet as a permanent template, which has low requirements for the minimum galvanized amount and fire resistance time, and is cheap. Since the floor bearing plate is designed as a tension rod, its service life must be consistent with the service life of the main steel structure. Therefore, the minimum galvanizing quantity and fire resistance time are required to be higher, and the unit price is higher.

4. Color stamped steel plate: Color stamped steel plate is generally used for house panels and wall panels in light steel plants. The bottom plate has different plate type, thickness and steel number, thickness of galvanized sheet and galvanized sheet, and different coating types. In the form of veneer, thermal insulation composite board, veneer and inner insulation layer, there are also cost differences such as ultra-fine glass, hard rock, and wool. Therefore, the design should be based on factors such as the nature of the factory, the atmospheric environment and other factors, and the board should be selected reasonably to control the project cost.In the form of veneer, thermal insulation composite board, veneer and inner insulation layer, there are also cost differences such as ultra-fine glass, hard rock, and wool. Therefore, the design should be based on factors such as the nature of the factory, the atmospheric environment and other factors, and the board should be selected reasonably to control the project cost.