综合指标体系下基于AHP-熵法的桥型选择研究  

Study of Bridge Type Selection Based on AHP-Entropy Method Under Integrated Index System

作　　者：杨敏[1,2] 李雅娟[1] 王春生[2] 蔡雯 赵晓林[4] 

机构地区：[1]中交第一公路勘察设计研究院有限公司,陕西西安710068 [2]长安大学,陕西西安710064 [3]中国水电建设集团十五工程局有限公司,陕西西安710065 [4]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《世界桥梁》2015年第1期48-54,共7页World Bridges

基　　金：西部交通建设科技项目(2011 318 490 1030);西部交通建设科技项目(2012 318 365 20)

摘　　要：针对目前桥型选择评价指标不全面、指标权重不明确、客观评价标准缺失、主观经验依赖性强、对单个指标评价结果敏感度高的问题,提出了一种基于综合指标体系下的桥型选择方法。首先,建立了包含安全、适用、经济、耐久、美观及环保六大方面的综合评价指标体系;然后采用级联式层次分析法-熵法、专家调研法计算指标体系权重;最后通过与其它方法比较,并结合工程实例应用检验,表明采用该方法能够有效地进行桥型选择,较现有桥型选择方法具有对决策者依赖性低、系统可靠性更高、对指标误判及评价误差敏感度更低的特点。At present ,there are several underlying problems in bridge type selection ,such as the lack of an integrated evaluating index system ,the uncertain weights for indexes ,the lack of objective evaluating norms ,the strong dependence on subjective experience and the high sensitivity to the evaluating results of the single index .For these reasons ,a bridge type selection method based on the integrated index system was proposed .Firstly ,an integrated evaluating index system w hich covers the six aspects of safety ,applicability ,better economic performance ,durability ,aes‐thetic effect and environmental protection was established .Then ,the entropy method （a kind of analytical hierarchy process） and the expert interview method were adopted to calculate the weight of each index .Based on the comparison of the method with other methods and the verification of the actual project application ,the aforementioned method was proved effective in bridge type selec‐tion .Compared with the current bridge type selection methods ,the method presented has distinc‐tive features of low dependence on decision makers ,higher systematic reliability ,lower rate of in‐dex misjudgement and lower evaluating error sensitivity .

关 键 词：桥梁选型 综合评价指标体系 层次分析法 熵理论 权重 

分 类 号：U442.54[建筑科学—桥梁与隧道工程]