Advantages and classification of grid structure

Grid structures are mainly used in large and medium-span public buildings, such as gymnasiums, clubs, aircraft hangars, exhibition halls and waiting halls. Small and medium-sized industrial plants have also begun to be popularized and applied. The larger the span, the more obvious the superiority and economic effect of this structure.

The grid structure has the characteristics of light weight, high strength, good overall rigidity and strong deformation ability, which can be used in complex plane forms. It is suitable for structures with various spans, especially for complex plane shapes. These spatial intersecting rods support each other, which organically combines the stressed rod with the support system, so the material consumption is economical. At present, the demand for grid structure is also increasing. The structural roof is all composed of cold-formed thin-walled steel member system, and the steel bones are made of super anti-corrosion high-strength cold-rolled galvanized sheet, which effectively avoids the influence of corrosion of steel plates in the process of construction and use, and increases the service life of light steel members. The service life of the structure can reach 100 years.

According to different shapes, the grid structure can be divided into double-layer plate grid structure, single-layer and double-layer shell grid structure. The members of plate type space truss and double-layer shell type space truss are divided into upper chord, lower chord and web member, which mainly bear tension and pressure; The members of single-layer shell space truss bear not only tension and pressure, but also bending moment and shear force. At present, most of the grid structures in China are plate grid structures.