基于最优传递矩阵的层次分析法在桥梁震害评估中的应用
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摘要
影响桥梁抗震性能的因素众多,鉴于传统的定量方法无法精确权衡各因素的影响程度,因此,考虑将不确定型层次分析法引入桥梁的震害评估中,对区间标度的合理选择作了简要讨论,运用1～9标度采集数据,兼顾10/10～18/2标度的精确性,对初始判断矩阵进行折算。利用最优传递矩阵的概念,对传统的AHP进行改进,直接求出各指标的权重值。并将此方法应用到实例当中,建立基于地震波、墩台基础、支座、结构因素、环境因素等多因素影响下的桥梁震害评估模型,得到桥梁最终的综合评估值。
Earthquake resisting behavior of a bridge is influenced by many factors. As the traditional quantitative methods can not accurately fix influence degrees of various factors,the uncertain analytic hierarchy process is adopted. Reasonable selection of interval scales is briefly discussed. By using 1 ～ 9 data collecting scales,and considering the accuracy of 10 /10 ～ 18 /2 scales,a convert to original judgment matrix is made. Using the concept of optimal transfer matrix to improve the traditional analytic hierarchy process,the weights of assessment indices are directly obtained. By using this approach practically,a seismic damage evaluation model based on seismic waves,piers and foundation,bearing,structural factors,environmental factors,etc. is built, and the final comprehensive evaluation results are obtained.
Earthquake resisting behavior of a bridge is influenced by many factors. As the traditional quantitative methods can not accurately fix influence degrees of various factors,the uncertain analytic hierarchy process is adopted. Reasonable selection of interval scales is briefly discussed. By using 1 ～ 9 data collecting scales,and considering the accuracy of 10 /10 ～ 18 /2 scales,a convert to original judgment matrix is made. Using the concept of optimal transfer matrix to improve the traditional analytic hierarchy process,the weights of assessment indices are directly obtained. By using this approach practically,a seismic damage evaluation model based on seismic waves,piers and foundation,bearing,structural factors,environmental factors,etc. is built, and the final comprehensive evaluation results are obtained.
引文
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[14]刘健新,赵国辉.“5·12”汶川地震典型桥梁震害分析[J].建筑科学与工程学报,2009,26(2):92-97.
[2]姜忻良,王丙兴,窦远明,等.综合评价指标体系在桥梁选型中的应用研究[J].土木工程学报,2009,42(7):65-68.
[3]黄侨,任远,林阳子.大跨径桥梁综合评估中的不确定型层次分析法[J].公路交通科技,2008,25(3):79-83.
[4]谢全敏,夏元友.边坡治理决策的改进层次结构模型及其应用[J].岩土工程学报,2002,24(1):86-88.
[5]高晓红,信春华.提高层次分析法有效性的一种方法[J].技术经济,2004(8):59-62.
[6]王龙涛,陶熹.基于改进层次分析法的舰载信息系统作战效能评估[J].舰船电子对抗,2009,32(1):48-50.
[7]许树柏.层次分析法原理[M].天津:天津大学出版社,1988.
[8]杜红珊,李洪杰,郑庆玉.不确定型AHP的最优传递矩阵法[J].曲阜师范大学学报,1997,23(4):37-40.
[9]张鹏.桥梁加固方案的层次分析优选法[J].公路交通科技,2006,23(7);92-95.
[10]马继兵,蒲黔辉,宋大炜,等.既有中(下)承式混凝土拱桥耐久性模糊贴近度的综合评价[J].公路交通科技,2008,25(2):79-84.
[11]李绍勤,王大伟.基于最优传递矩阵层次分析法的改进及应用[J].云南民族大学学报:自然科学版,2007,16(3):193-196.
[12]范立础,李建中.汶川桥梁震害分析与抗震设计对策[J].公路,2009,5(5):122-128
[13]陕西省公路局.JTGH11-2004公路桥涵养护规范[S].北京:人民交通出版社,2004.
[14]刘健新,赵国辉.“5·12”汶川地震典型桥梁震害分析[J].建筑科学与工程学报,2009,26(2):92-97.
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