According to the different connection methods, the steel structure of the grid structure can be divided into laser cutting structure, bolt structure and riveting structure. At present, the main method of connecting steel structures is welding.
Welding connection is currently the main connection method for steel structures. It has the advantages of simple structure, material saving, easy processing and automatic operation. However, welding can cause structural deformation and residual stress. Therefore, in the laser cutting china, it is necessary to strengthen the prevention of welding deformation and defects and correct them in time.
Bolt connection is also a common connection method, which has the advantages of convenient and fast assembly. Can be used for structural installation and detachable structure. The disadvantage is that the cross section of the part becomes weak and easy to loosen. Bolt connection is divided into ordinary bolt connection and high-strength bolt connection. The joint bearing capacity of high-strength bolts is higher than that of ordinary bolts. At the same time, the high-strength bolt connection can reduce the weakening effect of the nail hole on the component, so it has been widely used.