多因素影响下的旧桥改造方案的决策  

Under the influence of many factors the old bridge rebuilding project decision-making

作　　者：吴跃梓[1] 章劲松[1] 

机构地区：[1]安徽交通职业技术学院土木系,安徽合肥230051

出　　处：《安徽建筑工业学院学报（自然科学版）》2012年第6期11-14,共4页Journal of Anhui Institute of Architecture(Natural Science)

基　　金：安徽高校省级自然科学重点研究项目(项目编号:KJ2012Z053);2010年安徽省级教学团队建设项目(项目编号:20101598)

摘　　要：桥梁结构随着服役年限的增加,由于材料性能的自然退化、汽车等级的提高及交通量的增长等因素的影响,造成桥梁承载力、适用性及通行能力不足等病害,为确保桥梁预定功能的实现,旧桥改造势在必行。影响桥梁改造方案的因素很多,许多因素又具有模糊性这一特征,采用基于模糊理论的数学分析法,可以很好的解决模糊因素对方案的影响。主要把模糊的因素定量化,赋予因素的权值,用模糊综合评价法对方案决策。详细介绍了该法的应用原理及主要步骤,并结合具体工程实例进行验证分析,结果表明,该法简单实用,结论明晰,应用于旧桥改造时,具有一定的参考价值。Bridge structure with the increase in service life,because the material properties of natural degradation,auto levels increase and the increasing of traffic and other factors,resulting in the bridge carrying capacity,adaptability and capacity is insufficient and so on,to ensure that the bridge a predetermined function realization,the old bridge must be reconstructed.Impact of bridge reconstruction scheme of many factors,many factors and fuzziness of the characteristics,based on the theory of fuzzy mathematics analysis method,can be a very good solution to fuzzy factors on program impact.The main use of the fuzzy factors quantitative,gives the weight of factors,fuzzy comprehensive evaluation method to decision making.Presents in detail the method principle and the main steps,and combined with the specific project example to validate the analysis results show that,the method is simple,practical,the conclusion is clear,used in old bridge reconstruction,has a certain reference value.

关 键 词：旧桥改造 方案决策 模糊综合评价 多因素 层次分析法 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]