铁路曲线坐标法拨距约束优化方法研究

在铁路曲线整正中,不同组合的曲线要素得到的拨距值也不同,拨距优化可以选配更加合理的曲线要素,使拨量最小.在传统优化方法的基础上,研究了利用乘子法对坐标法拨距优化的方法,建立了对称优化数学模型,推导出相关的计算公式,并编制了相应的计算程序,将其优化结果与传统优化方法结果进行比较.结果表明:利用乘子法优化方法计算简便,得到的拨距与传统优化方法的拨距符合程度较高,且总拨距值更小,可以为铁路线路的养护维修提供参考.

Research on Constrained Optimization of Coordinate Method in Railway Curve Realignment

In the railway curve realignment,move distance by different elements of curves are different. Move distance optimization can be selected with more reasonable curve elements to minimize the move distance. Based on the traditional optimization methods,the study was carried out using multiplier method to optimize move distance in coordinate method,the mathematical model of the symmetrical optimization is established,the related calculating formula is derived and the relevant calculation program is deigned. Through practical data analysis,the results show that this method is simplified,the results has a higher degree of compliance with the traditional optimization methods,and the move distance is smaller,which can provide relerece for the main tenance of the railways.