The drawings include 52 pieces of anti-collision railing CAD drawings, including the central anti-collision wall reinforcement layout, the border anti-collision wall reinforcement layout, and the railing structural drawing. The materials include stainless steel and carbon steel composite pipes, rectangular steel pipes and flat iron, and concrete pouring in situ. At the center line of each guardrail section of large and medium-sized bridges, a 2cm wide transverse half break joint is set and filled with asphalt oakum. The anti-collision railing concrete shall be poured in place, but when pouring the side plate cantilever slab concrete, N3, N4, N8 and N5 reinforcements as shown in the figure shall be laid first, and the spacing between railing columns shall be 3m. The precision of embedded steel plate of railing is axis+5mm. N2 is welded with embedded steel plate. The pipes are stainless steel and carbon steel composite pipes, all of which are welded by manual argon arc welding. The welded joints and welds must be fully welded, and there is no leakage or slag in the penetration welding. The surface should be polished and polished. The column is made of 235-C steel plate, thick δ= 10mm, the surface is sprayed with plastic after hot-dip galvanizing. The hot-dip galvanizing refers to GB2694-8.1, and the surface at the galvanizing point is blue. Manual arc welding shall be adopted for handrail column and embedded parts, and the welding shall be firm. The pavement layer can be covered only after two times of anti rust treatment. The railing is a combination of welded rectangular steel pipe and flat iron. ...... 52 sheets in total
