基于模糊层次分析法的公路梁式桥地震震害预测研究
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摘要
收集整理了我国汶川、唐山、海城等大地震中6度至11度区遭受不同程度震害的240座公路梁式桥样本,建立了公路梁式桥震害数据库.采用模糊层次分析法,对影响桥梁震害的主要因素进行层次分析,明确各因素对结构震害的影响程度,建立震害评估模型.根据震害样本统计结果,确定各层影响因素的模糊评语矩阵与模糊判断矩阵,进而对公路梁式桥在特定地震作用下可能出现的破坏情况进行预测.经算例验证,基于模糊层次分析法的公路梁式桥震害预测方法可获得较好的预测结果,可为此类桥梁的抗震加固提供设计依据.
The database of earthquake damage for highway girder bridges was established.The range of intensity from 6 degree to 11 degree,and the number sample is 240 highway girder bridges collected from Wenchuan,Tangshan,and Haicheng earthquake,etc.Fuzzy hierarchy analysis approach was employed to establish the damage assessment model based on classified the main effect factors and confirmed the incidence of them.Fuzzy evaluation matrix and fuzzy judgement matrix of different level factors were formed based on the statistic results,and then the damage under some earthquake of highway girder bridges can be forecasted.The research conclusion has been verified by two examples and it can be seen as the design basis for seismic reinforcement for such bridges.
The database of earthquake damage for highway girder bridges was established.The range of intensity from 6 degree to 11 degree,and the number sample is 240 highway girder bridges collected from Wenchuan,Tangshan,and Haicheng earthquake,etc.Fuzzy hierarchy analysis approach was employed to establish the damage assessment model based on classified the main effect factors and confirmed the incidence of them.Fuzzy evaluation matrix and fuzzy judgement matrix of different level factors were formed based on the statistic results,and then the damage under some earthquake of highway girder bridges can be forecasted.The research conclusion has been verified by two examples and it can be seen as the design basis for seismic reinforcement for such bridges.
引文
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[9]王宇.变墩高公路桥梁的地震易损性分析[D].上海:同济大学,2007.
[10]Hose Y D,Seible F.Performance evaluation database for concrete bridge components and systems under simulated seismicloads[R].Berkeley:University of California,1999.
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[14]四川省交通厅公路规划勘察设计研究院.国道G213线都江堰至映秀段地震灾后恢复重建检测报告[R].成都:四川省交通厅公路规划勘察设计研究院,2008.
[15]张吉军.模糊层次分析法(FAHP)[J].模糊系数与数学,2000,14(2):80-88.
[16]王东升,冯启民.桥梁震害预测方法[J].自然灾害学报,2011,10(3):113-118.
[2]刘恢先.唐山大地震震害[M].北京:地震出版社,1986.
[3]庄卫林,刘振宇,蒋劲松.汶川大地震公路桥梁震害分析及对策[J].岩石力学与工程学报,2009,28(7):1 377-1 387.
[4]胡勃,袁万城,王君杰,等.大型桥梁结构抗震分级设防与安全评定标准[J].世界地震工程,1998,14(1):1-9.
[5]姜淑珍,林均岐.城市桥梁震害预测方法的探讨[J].世界地震工程,2004,20(4):64-66.
[6]朱大奇,史慧.人工神经网络原理及应用[M].北京:科学出版社,2006.
[7]FHWA-HRT-06-032 Seismic retrofitting manual for highway structures[S].
[8]张玮.公路混凝土梁式桥基于性能的抗震设计研究[D].福州:福州大学,2009.
[9]王宇.变墩高公路桥梁的地震易损性分析[D].上海:同济大学,2007.
[10]Hose Y D,Seible F.Performance evaluation database for concrete bridge components and systems under simulated seismicloads[R].Berkeley:University of California,1999.
[11]游福科.在役公路混凝土梁式桥震害预测与抗震鉴定研究[D].福州:福州大学,2010.
[12]李乔,赵世春.汶川大地震工程震害分析[M].成都:西南交通大学出版社,2008.
[13]唐永建.“5.12”汶川大地震四川灾区公路应急调查与抢通[M].北京:人民交通大学出版社,2008.
[14]四川省交通厅公路规划勘察设计研究院.国道G213线都江堰至映秀段地震灾后恢复重建检测报告[R].成都:四川省交通厅公路规划勘察设计研究院,2008.
[15]张吉军.模糊层次分析法(FAHP)[J].模糊系数与数学,2000,14(2):80-88.
[16]王东升,冯启民.桥梁震害预测方法[J].自然灾害学报,2011,10(3):113-118.
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