匈牙利铁路从1978年开始研究测定无缝线路实际锁定温度的方法。运用这种测定方法,可以在无缝线路初始条件未知的情况下,判定它的实际锁定温度。1981～1982年,匈牙利铁路曾在现场运用过这种测定方法。1.原理设将一段钢丝“L”的两个端点水平地固定,在其中点加垂直作用力 P,加力点便沿垂直方向移动 y 的距离(图1),如钢丝张力为 H,则:P=2 Hsinα The Hungarian Railroad began researching the method of determining the actual locking temperature of a seamless line from 1978. Using this method of determination, it is possible to determine the actual lock-in temperature of a seamless line without any initial conditions. From 1981 to 1982, Hungarian Railways used this method on site. 1. Principle Let a section of wire “L ” the two ends of the horizontal fixed, in which the point of vertical force P, force points will be moved in the vertical direction y distance (Figure 1), such as the wire tension H, Then: P = 2 Hsinα