【作者】 陈鹏；

【导师】 易思蓉；

【作者基本信息】 西南交通大学 ， 道路与铁道工程， 2005， 硕士

【摘要】 铁路运输及其建设在中国经济社会发展中具有极为重要的地位和作用。铁路运输是运输网的骨干和主体,是建设中国综合交通运输网的关键。随着国民经济和对外贸易的不断扩大,客货运量也逐年大幅度增长。今后除大量修建必要新线外,改建既有线以提高铁路能力,是投资少、见效快的一项重大措施,也是我国铁路建设的一个长期任务。既有线改造问题复杂、牵涉面广、投资巨大。因此,如何利用先进的科学技术手段和方法快速的给出高质量的改建设计方案就成为既有线改建设计的关键,是目前迫切需要研究的问题。 本论文在对国内外的大量研究资料进行探讨和分析的基础上,尝试采用一些方法对既有线拨距整正和增建二线线间距计算进行优化改进,以达到计算数据精确的目的。 对于既有线拨距整正计算,本文在拨距图逼近法的基础上,采用级差的方法进一步改进优化,通过编写相应的程序验证了本方法的正确性和准确性,对于曲线半径取整对拨距的影响问题和缓和曲线的优化都进行了认真探讨和分析,同时针对特殊路段的多曲线联测的特点,研究了相应的拨距计算优化方法。 对于增建二线的线间距优化计算,尝试引入迭代法来解决缓和曲线段线间距的严密计算以提高误差精度。对计算系统中的线间距计算进行了简单介绍,同时针对几种特殊路段,提出了反向曲线群线路平面改建的线间距计算方法。 根据本文提出的理论方法编制了一个软件系统。通过用实例进行计算,证明了本文理论方法的正确性。更多还原

【Abstract】 Railway transportation and build in China it has to be extremely important status and function in the socio-economic developmenting. Railway transportation is backbone and subject of the transport network, is the key to building the comprehensive transportation network of China. With the constant enlargement of national economy and foreign trade, Volume of passenger transport and goods transported increases by a large margin year by year. Besides building essential new line in a large amount in the future, reconstructing the existing railway lines in order to improve the transport capacity of the railway, it is a great measure with little investment , with instant effect, and a long-term task of the railway construction of our country too. It has a lot of problem in reconstructing the existing railway lines such as the wiredly complicated questions, a lot of things widely involved ,and enormous investment. So it is key to reconstructing the existing railway lines that getting high-quality design plan of reconstruct fastly by advanced scientific and technical means and method, that is the problem needing to study urgently at present.This thesis is on the basis of analysing and discussing to a large number of research materials both at home and abroad, adopts some methods improve and optimize to calculating on setting right the distance to put in order in reconstructing the existing railway lines and the distance of space in expanding the second-line, in order to achieve the goal of calculating the data accurately.As to calculating on setting right the distance to put in order in reconstructing the existing railway lines, this text adopts the differential method to improve and optimize further on the basis of the method set right the distance before pursueing to approach, exactness and accuracy of this method that corresponding procedure has proved through writing, serious analysis and discuss the issue such as influence of curve radius intercepted into integer and optimization of relaxative更多还原