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在曲线上合理地设置超高度,是使行车平稳、线路稳固、左右股钢轨垂直磨耗均匀、钢轨承载均衡的重要措施。工务部门根据行车速度的变化,钢轨磨耗不匀的反映,常需调整超高度。因此,怎样合理地设置或调整曲线超高度是值得探讨的。下面介绍我们在使用“优选法”设置超高度中的一些体会。一、采用“优选法”的理由 1.铁路工务规则规定,曲线超高度h按下式计算: 式中:V_p——列车的平均运行速度; R——曲线半径。这一公式的前提,是假定曲线里外股钢轨所受垂直压力相等。但公式的推导,忽略车辆弹簧的作用,视车辆为平面,集其质量于一点,把列车的曲线运动,当作质点的曲线运动,这些假定与实际情况相差很大,因此,按这一公式设置曲线超高时,是不可能得到与公
Reasonably setting the super height on the curve is an important measure to make the traffic smooth, the line solid, the vertical vertical wear of the left and right strands and the even load of the rail. Public Works Department according to changes in traffic speed, rail wear uneven reflection, often need to adjust the ultra-high. Therefore, how to reasonably set or adjust the curve height is worth discussing. Here are some of our experiences with using the “preferred method” to set super heights. First, the use of “Law of Choice,” the rationale 1. Railway Works Regulations, the curve h is calculated according to the following formula: Where: V_p - the average train speed; R - curve radius. The premise of this formula is to assume that the vertical pressure on the outer and inner rails in the curve is equal. However, the derivation of the formula neglects the role of the vehicle spring and regards the mass of the vehicle as a plane and the curve of the train moving as a curve of the particle. These assumptions are quite different from the actual situation. Therefore, according to this formula Set the curve is high, it is impossible to get with the public