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针对重载铁路小半径曲线和长大坡道线路的轨距、线型难于保持,外轨侧磨严重,养护维修工程量大的情况,研制了普通型和减振型2种形式的75 kg.m-1钢轨用轨撑。在大秦线的轨道动力特性试验和现场试铺表明:与既有Ⅱ型弹条扣件相比,安装2种轨撑后测试断面的轨头横向静刚均有大幅增大,其中,外轨轨头的横向静刚度增大40%～54%,内轨轨头的横向静刚度增大9%～113%;轨撑提高了钢轨的横向抗力和抗倾覆的能力,提高了行车安全性;钢轨横移和钢轨侧磨明显减小,轨距和轨向保持良好,减小了日常养护维修工程量。减振型轨撑的减振效果更好。
Aiming at the problems that the gauge of the small radius curve of heavy haul railway and the line of up and down ramps is difficult to maintain, the outer side rail is worn seriously and the maintenance and repair works are heavy, 75kg Rail for m-1 rails. The orbit dynamic test and on-site trial on the Daqin line show that compared with the existing type II bar fasteners, the horizontal static stiffness of the rail head after the installation of the two kinds of rail braces is greatly increased, in which the outer rail Rail lateral static stiffness increased 40% to 54%, the lateral rail head static lateral stiffness increased 9% to 113%; rail rail rail lateral resistance and anti-overturning ability to improve traffic safety; Rail traversing and rail side grinding significantly reduced track and track to maintain good, reducing the daily maintenance and repair works. Damping rail brace better damping effect.