In some cases, the strength and bearing capacity provided by 12mm steel bar is sufficient, which can achieve the same or even better effect as 16mm steel bar. However, 16mm steel bar may be needed in some cases with heavy load or high design requirements. The use of 2mm steel bars also needs to consider the welding quality and anchorage, because the anchorage effect will have a key impact on the strength of the whole floor. For welding problems, it is necessary to ensure the quality of the weld and the compactness of the steel bar to ensure the strength and stability of the weld. For the anchorage problem, it is necessary to ensure that the reinforcement inside the bottom plate can reach a certain depth and density, and adopt appropriate joint and welding technology to deal with it.

Using 12mm instead of 16mm for high-speed rail floor reinforcement requires detailed design calculation and practical consideration, and must meet the requirements of relevant quality standards and safety specifications. After use in place, the design should be improved and strictly implemented in accordance with the specifications to ensure that the effect and firmness of assembly and installation meet the standards and eliminate any potential safety hazards.