铁路选线方案比选指标权重确定及灵敏度分析

doi:10.3969/j.issn.1674-0696.2015.06.14

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摘要: 为了解决目前铁路选线方案比选中指标权重的确定偏于主观经验, 且权重的细微变化会直接影响比选结果的问题，引用离差法与G1法理论的基本思想，提出了一种基于离差-G1法的铁路选线方案比选的指标权重计算方法。该方法综合考虑了指标取值数据的客观信息以及专家的主观意见，使权重的确定更加科学、合理。然后利用线性优化方法对所求出的指标权重进行灵敏度分析，计算维持既定方案排序的权重变化范围, 以判断比选结果的稳定性。最后通过一个走向方案的比选实例说明了该方法的作业程式。

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	罗圆
	姚令侃
	魏永幸

关键词 ：铁道工程, 铁路选线, 方案比选, 指标权重, 离差-G1法, 灵敏度分析

Abstract：In order to solve the problems that the current methods of index weight determination overemphasized subjective experience in scheme comparison for railway rout selection, and subtle changes in weight would directly affect the selection results, a method of index weight determination for scheme comparison in railway location designs based on deviation-G1 method was proposed through introducing the basic idea of above two theories. From this method, the objective information of index data and subjective opinions of experts were all taken into account, which made the determination of index weight become more scientific and reasonable. Then, the linear optimization method was used for sensitivity analysis on the obtained weights. The range of index weight to ensure the taxis result of scheme was worked out so as to judge the stability of the decision-making conclusion. Finally, an example of local alignment scheme comparison was used to illustrate the operation procedure of the method.

Key words ： railway engineering, railway route selection, scheme selection, index weight, deviation-G1 method, sensitivity analysis

收稿日期: 2014-02-21

PACS:

U212.32

基金资助:中国铁路总公司科技研究开发计划课题(2013G014-A); 国家自然科学基金重点项目(41030742)

作者简介: 罗圆(1986—)，男，四川广安人，博士研究生，主要从事铁路、公路勘察设计新技术方面的研究。 E-mail: ly986727@126.com。

引用本文:

罗圆，姚令侃，魏永幸. 铁路选线方案比选指标权重确定及灵敏度分析[J]. 重庆交通大学学报（自然科学版）, 2015, 34(6): 73-78.
Luo Yuan, Yao Lingkan, Wei Yongxing. Weight Determination and Sensitivity Analysis of Scheme Comparison Index in Railway Location. Journal of Chongqing Jiaotong University(Natural Science), 2015, 34(6): 73-78.

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http://xbzk.cqjtu.edu.cn/CN/10.3969/j.issn.1674-0696.2015.06.14 或 http://xbzk.cqjtu.edu.cn/CN/Y2015/V34/I6/73

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