Spaceframe-SAFS

 There are a number of differences between bolted ball grids and welded ball grids in terms of fabrication, construction and design. The following are specific comparisons: 1. Manufacturing process: The manufacturing of bolted ball net frame is mainly carried out in the factory, using mechanical shot blasting to remove rust, and then spraying paint, plastic spraying or zinc spraying treatment to enhance corrosion resistance.  The steel pipe and welded seam of welded ball mesh frame can only be descaled manually on site, and then paint or fireproof coating is brushed. For the welded part, it needs to be descaled and brushed at a stage to maintain, which increases the cost of later use and affects the safety of the structure. 2. Construction process: 70% of the workload of bolted ball grid frame is prefabricated in the factory, 30% of the workload is installed at the site, only a wrench is needed to tighten the bolts at the site, which is easy and fast, and can be constructed ...

  Structural features: The spatial stiffness is smaller than that of the square pyramid grid , and the internal force of the lower chord increases. When the perimeter is arranged into a full cone, the stiffness is better. This grid has a short upper chord under compression and a long lower chord under tension, which can give full play to the role of the cross section of the rod and bear reasonable force.   Applicable conditions: Applicable to peripheral support grids with a rectangular plane shape, a side length ratio greater than 1.5, and small and medium spans.

  Despite the many advantages of steel structure design in modern buildings, there are some design difficulties. The following are the main difficulties in steel structure design: steel structure 1. Complex mechanical analysis · Multi-directional force: Steel structures are usually subject to multiple loads, including vertical loads, wind loads, seismic loads and so on. The combination and transfer path of these loads are complex and require accurate mechanical analysis. · Large-span structures: Large-span steel structures such as stadiums and exhibition centers require precise force analysis to ensure the stability and safety of the structure. 2. Node design · Node Complexity: The design of nodes (connection points) in steel structures is very complex, especially for space frames and shaped structures. Nodes need to transmit and distribute multidirectional loads, and have high design and construction requirements. · Welded and bolted connections: nodes are connected in various wa...

In the process of development, whether in the early stage of business or expanding the scale of operation, enterprises need an efficient, safe and flexible workplace, which is when the multi-storey steel structure plant has great advantages. warehouse I. High space utilization rate Multi-storey steel structure workshop can greatly improve the space utilization efficiency of enterprises. As it can be utilized through the height, it makes the enterprise under the same land area, whether it is production, storage or workplace can be greatly improved. Not only that, the self-weight of steel structure plant is lighter, compared with concrete structure plant, it greatly reduces the foundation investment, thus saving the cost of enterprises. II. Stronger flexibility Multi-storey steel structure workshop is more flexible, the internal partitions of steel structure workshop can be changed according to the needs, and adjusted in real time according to the needs of the development of the enterp...

  The steel space frame  has the following characteristics:   space frame 1. Uniform load transfer of space structure: space frame structure can distribute the load evenly to all the members, so that the whole grid is uniformly stressed. 2. Quick and convenient construction: the space frame structure can be produced by prefabrication or modularization, which greatly shortens the construction period and can be repeatedly disassembled and reused. 3. High degree and anti-seismic performance: due to the characteristics of steel structure itself, the space frame structure has high load-bearing capacity and anti-seismic performance, and can adapt to all kinds of harsh environment and climate conditions. 4. Large span and flexibility: the  space frame structure  can be adapted to a variety of large-span buildings, and can be adjusted to meet different needs by adjusting the form and size of the structure. 5. Recyclable materials: the steel used in steel structure spa...

  As a structural engineer, I would look at the following aspects of analysing a steel tube joist : I. Structural characteristics: 1. Simple structure: Pipe truss structure is connected by several sets of pipe rods and nodes, which does not need a large number of parts, so the structure is very simple. This design not only makes installation and dismantling faster and more convenient, but also reduces the manufacturing cost. 2. Light weight: Pipe trusses are made of lightweight materials and the overall weight is light. This helps to reduce the load of the building itself and improve the load-bearing capacity of the building. 3. High Strength: The tube truss structure is made of high strength materials such as steel pipe, so the whole structure has high load bearing capacity and wind resistance. It can withstand larger loads and external impacts to ensure the stability and safety of the building. 4. Good anti-seismic performance: Due to the stability and flexibility of tube truss ...

  (1) Cross-section design of rods: The cross-section form of truss rods should be selected according to the conditions of saving steel, convenient connection and simple manufacture, and attention should be paid to make the length and slenderness ratio of rods in two main axes direction (the ratio between calculated length of rods and radius of rotation of the cross-section) as similar as possible, and should meet the requirements of strength, stability and length and slenderness ratio. (2) Strength and stability check: in the calculation of the strength and stability of the bar, the internal force is considered according to the axial force, when the bar is subject to axial force and bending moment at the same time, it should be considered according to the eccentricity of the force and its common role. When calculating the stability and slenderness ratio of the bars, the in-plane and out-of-plane directions of the truss or the unfavorable direction of the larger slenderness ratio ...

Welded ball space frame is a form of structure, widely used in various fields, the following are its main application areas: Public buildings: such as sports venues exhibition centers, airports, terminals, libraries, etc. These buildings require large spans. High space grid structure: welded ball grid can provide solid and beautiful support. Industrial facilities: such as petrochemical, electric power, pharmaceutical, etc. Plant facilities in the industry: anti-corrosion, dust and fire protection are required. Welded ball space frame   can provide these protections for transportation, such as bridges, highways and railroads. Welded ball space frame   can be used to make a variety of support structures to improve the carrying capacity of the road. Space structures: such as satellite launch sites solar power stations, etc.. Need large span high space structure form, welded ball space frame   is the ideal choice. Commercial buildings: such as commercial street shopping cent...

  steel (1) Carbon: the higher the carbon content, the higher the hardness of the steel , but its plasticity and toughness is worse. (2) Manganese: can improve the strength of steel, can weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of steel, high manganese content of high alloy steel (high manganese steel) has good wear resistance and other physical properties. (3) sulfur: a harmful impurity in steel, steel containing high sulfur at high temperatures for pressure processing, easily brittle, usually called thermal embrittlement. (4) phosphorus: can make the plasticity and toughness of steel decreased significantly, especially at low temperatures is more serious, this phenomenon is called cold embrittlement. In high-quality steel, sulfur and phosphorus should be strictly controlled. But on the other hand, in the low carbon steel containing high sulfur and phosphorus, can make its cutting easy to break, to improve the cutability of steel is fav...