Steel space frame is one of the key building structure types at the present stage. It is composed of beam steel, steel column, steel pipe truss and other prefabricated components, and is made of channel steel and thick steel plate. Space frame manufacturers adopt silanization, pure manganese phosphating, water cleaning and drying, hot-dip galvanizing and other anti-rust and anti-rust treatment processes, and then generally use intermediate welding, anchor screws or riveting of each component or component. Due to the light weight of the steel frame and simple construction, it is widely used in infrastructure projects in large and medium-sized manufacturing plants, sports venues, multi-storey buildings and other industries.
- According to the composition of the steel structure space frame, it can be divided into a cross truss structure system consisting of a two-way or three-way plan truss structure, an indoor space pyramid system composed of a triangular pyramid or a quadrangular pyramid, etc.
- According to the structure, it is generally divided into double-layer or three-layer space frame.
- According to the support situation, there are mixed methods such as peripheral support, point support, peripheral support and point support.
- Double-layer space frame is an indoor space steel frame composed of upper chain, lower chord and web, which is a common space frame method.
- The three-story space frame is a space plan composed of upper chain, middle chord, lower chord, upper web bar and lower web bar.
- Space frame processing According to the different accumulated layers of chords, it can be divided into double-layer space frame and three-layer space frame.
- When the span of the space frame is very large, the volume of steel used for the three-story space frame is enlarged, and the steel content of the double-layer space frame is saved. However, due to the increase in the number of nodes and components, especially the large number of components connected to the management nodes, the structure is complicated and the project budget will be significantly increased.
