The reinforcement mesh of tunnel is a mesh with longitudinal reinforcement and transverse reinforcement arranged at a certain distance and at right angles to each other, and all intersections welded together. The reinforcement mesh of tunnel has the following characteristics: significantly improve the quality of reinforcement works, significantly improve the construction speed, and enhance the crack resistance of concrete.
With better comprehensive economic benefits, the tunnel reinforcement mesh is made of longitudinal and transverse reinforcement by cross binding or welding. It is one of the contents of "2005 key promotion and application of 10 new technologies in construction industry" of the Ministry of construction. A welded mesh should be welded with the same type of reinforcement.
According to the shape and specification, the welded mesh can be divided into two types: setting and customization. The spacing and diameter of the reinforcement in two directions of the shaped welded mesh can be different, but the reinforcement in the same direction should have the same diameter, spacing and length, which has been stipulated in the relevant standards and regulations. The elongation of ribbed bar is larger than that of the same kind of cold processed steel.