由于使用刚性板式基础和钢轨弹性装置,因此,道碴轨道的非线性变形特性可大大地消除。由于轨枕底的道碴密实不好,而道碴又随着工作负载的增长而不断变化,从而产生了道碴轨道的非线性变形特性。这种非线性变形可描述为轨枕的暗坑(轨枕0位移时)或扣件松弛时的吊板。至于钢轨挠曲特性与动态车轮荷载间的相互关系,则仍是一个值得探索的问 Due to the rigid plate foundation and the rail elastic device, the nonlinear deformation behavior of the ballast track can be largely eliminated. Due to the tight ballast at the bottom of the sleeper, the ballast keeps changing with the increase of working load, resulting in the nonlinear deformation of the ballast track. This non-linear deformation can be described as a pit of the sleeper (when the sleeper 0 is displaced) or when the buckle is loosened. As for the interrelationship between rail deflection characteristics and dynamic wheel loads, it is still worth exploring