市域(郊)铁路最小线间距及曲线加宽方法研究

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摘要 研究目的:随着我国城镇一体化建设进程的加快,城市圈市域(郊)铁路建设需求逐渐增大,市域(郊)铁路在经济性、实用性以及功能性等方面要求严格。为此,本文对市域(郊)铁路最小线间距、加宽值及加宽方法进行研究,优化线路条件,合理利用有限资源。
研究结论:(1)市域A、B型车最小线间距不需要曲线加宽;市域C、D型车加宽值建议根据计算结果对应选用;CRH2型动车最小线间距建议取4.2 m;(2)市域(郊)铁路曲线加宽值推荐采用加宽计算结果进行对应选择;(3)线间距不变同心圆加宽方法,根据缓和曲线取整十反求曲线半径,这样可以求得最经济实用的圆曲线参数且唯一;该方法不受偏角影响;(4)变线间距非同心圆加宽方法,根据限制条件结合MATLAB程序进行计算求解二线曲线半径范围,根据不同工况选取最为经济、实用的曲线要素;研究发现大偏角小曲线半径会导致曲线半径取值范围变小;该方法线间距最大值出现在YH处附近(或HY处附近)的缓和曲线上;(5)本研究成果对补充《市域(郊)铁路设计规范》及合理优化资源具有参考价值。

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	于宝兴

关键词 ：市域(郊)铁路, 最小线间距, 曲线加宽, 同心圆, 非同心圆

Abstract：Research purposes: With the acceleration of China's urban integration construction process, the demand for urban (suburban) railway construction is gradually increasing, and the urban (suburban) railway has strict requirements in economy, practicality and functionality. Therefore, this paper studies the minimum line spacing, widening value and widening method of urban (suburban) railway, so as to optimize the line conditions and make rational use of limited resources.
Research conclusions:(1) The minimum line spacing of type A and B vehicles in the city does not need curve widening; The widening values of C and D vehicles in the city area are recommended to be selected according to the calculation results; The minimum line spacing of CRH2 train is recommended to be 4.2 m. (2) It is recommended to select the curve widening value of urban (suburban) railway according to the widening calculation results. (3) In the concentric circle widening method with constant line spacing, the curve radius is inversely calculated by rounding ten according to the transition curve, so that the most economical and practical circular curve parameters can be obtained and unique; This method is not affected by deflection angle. (4) The non-concentric circle widening method with variable line spacing is used according to the limiting conditions and MATLAB program to calculate the radius range of the second-line curve, and the most economical and practical curve elements are selected according to different working conditions; It is found that large deflection angle and small curve radius will reduce the value range of curve radius; The maximum line spacing of this method appears on the transition curve near YH (or near HY). (5) The research results have reference value for supplementing the Code for Design of Suburban Railway and reasonably optimizing resources.

Key words： urban (suburban) railway minimum line spacing curve widening concentric circles non-concentric circles

收稿日期: 2021-08-13

PACS:

U212.31

作者简介: ^**于宝兴,1991年出生,男,工程师。

引用本文:

于宝兴. 市域(郊)铁路最小线间距及曲线加宽方法研究[J]. 铁道工程学报, 2022, 39(9): 93-99.
YU Baoxing. Research on the Minimum Line Spacing and Curve Widening Method of Urban (Suburban) Railway. Journal of Railway Engineering Society, 2022, 39(9): 93-99.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2022/V39/I9/93

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