lower cloud point frame rail车架下梁
Point rail of switch转辙器
Point rail of frog叉心尖轨
long point rail长心轨
switch point rail辙尖钢轨
double-leg point rail双肢心轨
double-leg flexibility point rail双肢弹性可弯心轨
three rail point三轨转辙器
guard rail point梭头
A sharp increase happens at the (beginning of the point rail and there are three peak values totally. The maximum change rate of total rigidity reaches up to 200%.
辙叉区段基本轨的整体刚度沿线路纵向变化不大,里轨的整体刚度沿线路纵向的变化较大,从心轨尖端部位开始急剧增大,沿线路纵向共出现三个峰值,最大变化率约为200%。
参考来源 - 道岔轨下刚度平顺性与动态特性关系研究