毕业设计论文-改建铁路陇海线k1688+800至k1696+400平纵面设计 .doc

摘 要 随着经济的发展和对外贸易的不断扩大，既有铁路的技术设施和运输能力往往不再能满足日益增长的运输量的要求；同时，因时间价值和时间观念的增强，旅客对提高行车速度、节约旅行时间的要求日益增强，加上铁路长期面对其他运输方式的激烈竞争，为谋求铁路自身的发展，客观上需要提高行车速度。而且，由于在长期的运营中，线路的平纵断面线型会产生较大的错动或变形，致使行车速度降低，旅客舒适条件下降。为此，我们有必要对陇海线进行改建来增大陇海线通过能力，提升行车速度等。 本次设计主要运用EXCEL，C程序设计，CAD软件等完成陇海线K1688+800至K1696+400段既有线的平面曲线整正和放大纵断面图设计这两部分内容。在平面设计部分，根据既有线拨距资料和轨道资料，结合EXCEL计算曲线拨距，运用C程序编写寻优半径源代码再次计算拨距，最后对两种方法的计算结果进行比较分析。在纵断面设计中，运用EXCEL进行坡段设计，计算轨道起落道量，再根据表格计算结果绘制放大纵断面图。 本次设计提交的最终成果主要有：设计说明书、曲线拨距计算表、源代码和放大纵断面图。 关键词：既有线改建；平面曲线整正；放大纵断面图 Abstract With the development of economy and the continuous expansion of foreign trade, both the technical facilities and transport capacity of the railway is often no longer meet the requirements of the growing transport volume;At the same time, due to an enhancement of the value of time and the concept of time, passengers requirement to raise the speed of train and save travel time is increasingly enhancing, coupled with the fierce competition from other modes of transport the railway have been facing for a long time, to seek the development of the railway itself, objectively need to improve the running speed.Moreover, due to the long-term operation, the line will have a larger displacement or deformation both in longitudinal section and plane , resulting running speed decreased , and passenger comfort conditions lowered.Therefore, we need to rebuild the Longhai line to increase its ability and enhance its speed , etc.. The design mainly apply EXCEL, C program design, and CAD software to complete the plane curve adjustment and amplified longitudinal design contents .of Longhai line K1688+ 800 to K1696+400 section.In the part of plane design, according to the existing move distance data and track data, applying EXCEL to calculate curve move distance ,and using C program to write source code to find optimal radius and calculate move distance again, finally comparing and analyzing.two kinds of calculation of methods.In the longitudinal design section, usin