- 丝经:
- 8mm
- 孔经:
- 200*200mm
Reinforced steel mesh is also called welded steel mesh, steel bar welded mesh, steel bar welded mesh, steel bar welded mesh, steel bar welded mesh, steel bar mesh, etc. It is a mesh with longitudinal steel bars and transverse steel bars arranged at a certain distance and at right angles to each other, and all intersection points are welded together.
Reinforced mesh is a mesh made of longitudinal and transverse steel bars that are crisscrossed and tied or welded. It is one of the new technologies promoted and applied in the construction industry of the Ministry of Construction.
Reinforced mesh is used in industrial and civil housing beams, columns, floors, roofs, walls, concrete pavements, bridge decks, airport runways, tunnel linings, box culverts, wharf floor prefabricated components and other fields.
The application of welded steel mesh in my country is still in its infancy, and the current application volume in our country accounts for less than one-tenth of the total steel consumption. In the early 1990s, welded steel mesh was listed as a key promotion project by the National Science and Technology Commission and the Ministry of Construction, and national standards and regulations were formulated. my country's infrastructure is developing rapidly, and the state's investment in infrastructure continues to grow to implement the strategy of developing the western region. As the country's economic construction enters a new stage, the demand for welded steel mesh in basic construction such as energy, transportation, water conservancy, housing and municipal engineering will surely increase exponentially. Its market application prospects are very broad. Welded steel mesh is suitable for factory-scale production. It is an emerging industry with high efficiency, environmental protection requirements and adapts to the industrialization development trend of the construction industry.
The welding network method for steel bar construction is the development trend of the world's steel bar industry.
Steel mesh, a new form of reinforcement, is particularly suitable for large-area concrete projects.
The widespread and rapid promotion and application of cold-drawn ribbed steel bars and hot-rolled grade steel bars in my country provides a good material foundation for the development of welded mesh. The formal implementation of welded mesh product standards and usage procedures has played a positive role in improving product quality and accelerating the promotion and application.
my country's market has great potential for demand for steel mesh.
Reinforced mesh is aesthetically pleasing.
my country is the world's largest steel country.
The development of steel mesh in China already has both soft and hard conditions.
The advantages of steel mesh can significantly improve the quality of steel bar projects
Significantly increase the construction speed
Enhance the crack resistance of concrete
Have good comprehensive economic benefits
Anping County Yongyu Steel Bar Application of mesh Application of steel mesh in highway cement concrete pavement engineering
The minimum diameter and maximum spacing of steel mesh for reinforced concrete pavement should comply with the current industry standard "Code for Design of Highway Cement Concrete Pavement". When cold-rolled ribbed steel bars are used, the diameter of the steel bars should not be less than the longitudinal steel bar spacing, and the transverse steel bar spacing should not be greater than the spacing of the longitudinal steel bars. The longitudinal and transverse steel bars of the welded mesh should be of the same diameter, and the thickness of the protective layer of the steel bars should not be less than that of the welded mesh used for reinforcing reinforced concrete pavement. The relevant regulations for welded mesh used for reinforced concrete pavement can be implemented.
When the expansion joint connecting the concrete pavement and the fixed structure cannot be equipped with a dowel rod, a double-layer steel mesh can be installed in the end of the plate adjacent to the structure or the length can be gradually extended within a range of approximately one times the thickness of the plate. The plate thickness increases.
When the concrete pavement is connected to the bridge and there is a lap plate at the bridge head, a reinforced concrete surface transition plate of one length should be set between the lap plate and the concrete surface slab. When the bridge is diagonal, the acute angle portion of the reinforced concrete slab should be reinforced with steel mesh.
When there is a box-shaped structure crossing horizontally under the concrete surface layer, and the distance from the top surface to the bottom surface of the surface layer is less than or embedded in the base layer, a double-layer steel mesh should be laid in the concrete surface layer at the top width and both sides of the structure. The upper and lower layers of steel mesh are separated from the top and bottom surfaces of the surface layer by a thickness of /1/.
When there is a circular tubular structure crossing horizontally under the concrete surface layer, and the distance from the top surface to the bottom surface of the surface layer is less than The thickness of /a/ on the top surface of the surface layer.
Excerpted from the industry standard "Code for Design of Highway Cement Concrete Pavement"
Application of steel mesh in bridge engineering
Mainly used in deck paving of municipal bridges and highway bridges, renovation of old bridge decks, and bridge piers Anti-cracking, etc. The quality inspection of thousands of domestic bridge application projects shows that the use of welded mesh significantly improves the quality of the bridge deck pavement layer, the pass rate of the protective layer thickness reaches above 1, the flatness of the bridge deck improves, the bridge deck has almost no cracks, and the pavement speed increases above 10%. Reduce the cost of the bridge deck paving project by approx. The steel mesh on the bridge deck pavement should be welded mesh or pre-cold-rolled ribbed steel mesh, and tied steel mesh should not be used. The diameter and spacing of the steel mesh for bridge deck pavement should be determined according to the bridge structural form and load level. The spacing of the steel mesh can be 1, and its diameter should be 1. The steel mesh should be equally spaced vertically and horizontally, and the thickness of the protective layer from the top surface of the welded mesh should not be less than that of the welded mesh.
Application of steel mesh in tunnel lining
According to the national standard "Code for Design of Highway Tunnels".
Ribbed steel mesh should be installed in the shotcrete to help improve the shear and bending strength of the shotcrete, improve the punching resistance and bending resistance of the concrete, improve the integrity of the shotcrete, and reduce the damage of the shotcrete. Shrinkage cracks to prevent local pieces from falling off. The steel mesh grid should be arranged in a rectangle, and the spacing between the steel bars of the steel mesh should be ~. A combination of,,,, can be used. The overlap length of the steel mesh should not be less than (the diameter of the steel bar.
The thickness of the shotcrete protective layer of the steel mesh should not be less than .