Technical parameters of highway guardrail boards

The highway guardrail board is the foundation for ensuring the overall size and appearance quality of the anti-collision guardrail. From the beginning of template production, high standards and strict requirements must be met. In the past, anti-collision guardrail templates were generally made of wooden formwork, wrapped with galvanized iron sheet or cold-rolled black iron sheet. Wooden formwork has advantages such as low investment, easy processing, and easy repair, but it also has significant shrinkage deformation of wood, manifested in easy deformation of iron sheet, poor surface flatness, and more edge deformation. Due to the fact that wood is an elastic material, the overall stiffness of the formwork made is poor, so it is difficult to ensure the straightness and flatness of the guardrail after pouring concrete. In recent years, steel formwork has been used instead of wooden formwork in guardrail construction.

highway guardrail boards have the advantages of high stiffness and smoothness, which are not easily deformed during use. They ensure that the concrete surface is flat and smooth, and the lines are straight. Secondly, the steel formwork has more turnover times and good long-term benefits, but the one-time investment is large. When processing and manufacturing steel formwork, it is necessary to consider the characteristics of the project itself and the turnover usage situation to determine the material selection.

The conventional practice is to use 3mm thick ordinary new steel plates on the front of the template. Depending on the size and shape of the guardrail, it is decided whether to use whole or broken plates for splicing. Regardless of the method used, it is necessary to ensure that the dimensions of each part of the steel template are absolutely accurate, its edges are straight, and the surface of the steel plate has good smoothness. The spacing of its reinforcement strips depends on the situation, mainly to ensure that the highway guardrail boards cannot deform during use and lifting.