在轨道设计中,计算钢轨挠度、弯矩及轨下压力有两种方法,即“连续支承法”和“点支承法”。这两种方法的力学模型都没有考虑钢轨所承受的纵向荷载,而在无缝线路中,这一荷载是相当大的。它包括由轨温变化所引起的强大温应力和列车在加速或制动时,由机车 In track design, there are two methods for calculating rail deflection, bending moment and rail pressure, namely “continuous support method” and “point support method”. The mechanical models of both methods do not take into account the longitudinal loads on the rails, which are quite large in the case of seamless lines. It includes a strong temperature stress caused by temperature changes and train acceleration or braking, the locomotive