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本文研究了我国时速160公里铁路最小曲线半径与缓和曲线的设计原则和标准。关于最小曲线半径:从满足列车运行安全、乘客舒适和经济合理的要求出发,根据理论分析、试验资料和我国铁路运营情况,提出了曲线最大允许超高、欠超高和过超高的推荐值。同时,提出了三个满足不同条件的最小曲线半径计算公式。还根据客运专用线、客货混运线和新、旧线的不同特点,推荐了我国时速160公里铁路最小曲线半径的设计标准。关于缓和曲线:对不同线形缓和曲线的理论分析和试验实测资料证明,对于最高时速160公里的铁路,继续采用三次抛物线形缓和曲线是能满足运行要求的,采用半波正弦形缓和曲线能创造更好的运行条件。并提出决定缓和曲线长度的主要参数(β)及(ω)值及最小长度的计算公式。
This paper studies the design principles and standards of minimum curve radius and easing curve of China’s railways at an annual speed of 160 km. About the minimum curve radius: From the requirements of meeting train safety, passenger comfort and economic rationality, based on the theoretical analysis, test data and the railway operation in our country, the recommended values of the maximum allowable curve, the under-high and the under-high are proposed . At the same time, three formulas for calculating the minimum curve radius that satisfy different conditions are proposed. According to the special passenger line, passenger and freight mixed transport line and the new and old lines of different characteristics, recommended the minimum curve radius of 160 km per hour design standards. About the easing curve: The theoretical analysis of the different linear easing curves and the experimental data show that for the top speed of 160 km, the continuous use of three parabolic curves can meet the operational requirements, and the use of a half-sine smoothing curve can create more Good operating conditions. The formulas for calculating the main parameters (β), (ω) and the minimum length of the curve are proposed.