Manufacturer [153*7341*4170] Zhangjiakou Railway Concrete Guardrails (Origin Stock) High-Speed Rail Cement Ballast Fence Manufacturer
High-Speed Railway Bridge Undercrossing Protection Fence Application Range: This product is suitable for railway closures on dry bridges with bridge pier heights of 3 meters or more under high-speed railway bridges.
Barbed wire cages, metal mesh protection fences, reinforced security fences, and protective fences under railway bridges collectively form the main materials for the protection along the high-speed railway.
High-Speed Railway Bridge Underpass Protection Fence; Technical Standards:
General Reference Drawing for Railway Construction Engineering (Underpass Protection Fence, Main Line (2012) 8002).
2; Technical requirements for protective railing under high-speed railway bridges:
3; Reinforced concrete column metal mesh security fence, consisting of columns, mesh panels, and connecting parts, with a protective height of 1.8 meters.
4; Poles are prefabricated with C30 reinforced concrete, with a cross-sectional size of 120mm x 120mm and a height of 2.5m. Four φ12mm round holes are pre-drilled during prefabrication, which are then secured during installation through bolts to the connecting plates on both sides.
5; Metal mesh panel with Q235 rectangular tube frame, size 30mm*50mm, tube thickness 2.0mm; internal wire mesh made of HPB300 Φ4.0mm high tensile cold drawn steel wire, size 75mm*150mm.
6; Connector plates and bolts. The column connection plates and mesh connection plates are made of 90° bent Q235 steel plates with a thickness of 4.0mm, available in two types, A and B, depending on the usage location. Both the connector plates and bolts are made of Q235 steel and are galvanized, with a galvanizing amount of 270g/m².
Precision requirements for the connector plate: Length tolerance ≤ 1.0mm, width tolerance ≤ 0.5mm, thickness tolerance ≤ 0.5mm, hole position deviation ≤ 1.0mm.
Barbed wire roll cages, metal mesh protective fences, dense protective mesh fences, and under-rail protective fences collectively make up the main materials for the protection along the high-speed railway.
The railway protection fences are made of high-quality low-carbon steel wire焊接, mainly divided into two types: galvanized protection fences and coated plastic protection fences. They are constructed by connecting posts with mesh panels.
