steel structure is mainly composed of steel materials, which is one of the main types of building structure.The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of section steel and steel plates. The components or parts are usually connected by welds, bolts or rivets.Because of its light weight and simple construction, it is widely used in large factories, stadiums, super high-rise buildings and other fields.

      Steel is characterized by high strength, light self weight, good overall rigidity and strong deformation ability, so it is particularly suitable for building large-span, super high and super heavy buildings; good homogeneity and isotropy of materials, ideal elastomer, in line with the basic assumptions of general engineering mechanics; good plasticity and toughness of materials, large deformation, good ability to bear dynamic loads; short construction period;It has a high degree of industrialization and can carry out specialized production with a high degree of mechanization.High strength steel should be studied in steel structure to greatly improve its yield point strength; in addition, new types of steel should be rolled, such as H-shaped steel (also known as wide flange steel), T-shaped steel and profiled steel to meet the needs of large-span structures and super high-rise buildings.

In addition, there is no heat bridge light steel structure system, and the building itself is not energy-saving. This technology solves the cold and hot bridge problem of the building with smart special connectors; the small truss structure makes the cable and the water pipe pass through the wall, and the construction and decoration are convenient.

      ① Before installation, the construction unit shall check the product certificate, design documents and pre assembly records of the components, and recheck the dimensions of the components.If the deformation and defect of steel structure exceed the allowable deviation, it shall be treated.Before installation, the detailed measurement and correction process shall be prepared. Before welding and installation of thick steel plate, the process test of simulating product structure shall be carried out and the corresponding construction process shall be prepared.A certain camber should be preset for the assembled roof truss. 

      ② After the hoisting of Guiyang steel structure in place, the control points required by the component positioning axis and elevation design shall be measured and marked, and the quality of the hoisting butt joint shall be inspected before welding.Install the temporary support and steel wave cable to make the steel roof truss safe and stable in the construction process.

      ③ During the installation of steel structure, the construction unit shall submit the elevation dimension, welding and coating of each member after hoisting to the supervisor for acceptance