基于人工神经网络的城市桥梁震害评估方法
|
摘要
为了使已有的桥梁震害评估方法适用于城市立交桥和高架桥,将桥梁结构是否规则考虑为评估模型的一项输入参数,并剔除了以往桥梁震害评估方法中不合理的影响因素以提高所提方法的可操作性。基于BP神经网络算法,以唐山地震和汶川地震中收集的54座梁式桥的震害资料作为网络训练样本,建立了梁式桥震害评估神经网络模型;通过讨论神经网络模型的泛化能力,得到了较满意的结果,表明该方法具有一定的准确度,可以应用于城市桥梁震害评估工作。
In order to adjust the existent methodology for seismic evaluation of bridges to the assessment of overpass and viaduct,as a parameter,the regularity of the bridge was considered in the assessment model.For the purpose of improving practicality of the methodology,improper influence factors which are taken into account in the existent methodology were removed.A three-layer BP neural network was built,and then trained with data of 54 bridges which were collected from literature of 1976 Tangshan earthquake and 2008 Wenchuan earthquake.The capacity of network generalization was discussed and the conclusion is that this methodology for seismic evaluation of urban bridges has proper accuracy and can be operated in practice.
In order to adjust the existent methodology for seismic evaluation of bridges to the assessment of overpass and viaduct,as a parameter,the regularity of the bridge was considered in the assessment model.For the purpose of improving practicality of the methodology,improper influence factors which are taken into account in the existent methodology were removed.A three-layer BP neural network was built,and then trained with data of 54 bridges which were collected from literature of 1976 Tangshan earthquake and 2008 Wenchuan earthquake.The capacity of network generalization was discussed and the conclusion is that this methodology for seismic evaluation of urban bridges has proper accuracy and can be operated in practice.
引文
[1]黄崇福,王家鼎.模糊信息优化处理技术及其应用[M].北京:北京航空航天大学出版社,1995.HUANG Chongfu,WANG Jiading.Optimization technology and applications of fuzzy information[M].Beijing:Beijing University of Aeronautics and Astronautics Press,1995
[2]兰日清,丰彪,王自法.震后公路桥梁通行能力快速评估技术研究[J].世界地震工程,2009,(25)2:81-87.LAN Riqing,FENG Biao.WANG Zifa.Study on the fast assessment of traffic capacity of highway bridges after strong earthquakes[J].Word Earth-quake Engineering,2009,(25)2:81-87.
[3]柳春光,张利华.遗传优化神经网络方法在桥梁震害预测中的应用[J].地震工程与工程振动,2008,(28)1:139-145.LIU Chunguang,ZHANG Lihua.The application of genetic algorithms and BP neural network to seismic damage prediction of bridges[J].Journal of Earthquake Engineering and Engineering Vibration,2008,(28)1:139-145.
[4]刘恢先.唐山大地震震害[M].北京:地震出版社,1986.LIU Huixian.Disasters of Tangshan Earthquake[M].Beijing:Seismological Press,1986.
[5]李光华,卓秋林,生墨海.斜交桥抗震设计研究现状综述[J].公路交通科技(应用技术版),2007,(10):94-96.LI Guanghua,ZHUO Xiulin,SHENG Mohai.Research situation of seismic design for skew bridges[J].Journal of Highway and Transportation Re-search and Development.2007,(10):94-96.
[6]朱美珍.公路桥梁震害预测的实用方法[J].同济大学学报,1994,(22)3:279-283.ZHU Meizhen.A pratical method for predicting seismic damage of highway bridges[J].Journal of Tongji University,1994,(22)3:279-283.
[7]朱昱,赵成刚.人工神经元网络在桥梁震害预测中的应用[J].地震工程与工程振动,1995,15卷增刊.ZHU Yu,ZHAO Chenggang.Application of neural network to earthquake engineering[J].Journal of Earthquake Engineering and Engineering Vi-bration,1995,Vol.15,Supplement.
[8]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.ZHU Daqi,SHI Hui.Mechanism and Application of Neuronal Network System[M].Beijing:Science Press,2006.
[9]中国地震局工程力学研究所.汶川地震工程震害科学考察总结报告[R],2009.Institute of engineering mechanics,China earthquake administration.Final report of scientific expedition for seismic damage of engineering structures in Wenchuan earthquake[R],2009.
[2]兰日清,丰彪,王自法.震后公路桥梁通行能力快速评估技术研究[J].世界地震工程,2009,(25)2:81-87.LAN Riqing,FENG Biao.WANG Zifa.Study on the fast assessment of traffic capacity of highway bridges after strong earthquakes[J].Word Earth-quake Engineering,2009,(25)2:81-87.
[3]柳春光,张利华.遗传优化神经网络方法在桥梁震害预测中的应用[J].地震工程与工程振动,2008,(28)1:139-145.LIU Chunguang,ZHANG Lihua.The application of genetic algorithms and BP neural network to seismic damage prediction of bridges[J].Journal of Earthquake Engineering and Engineering Vibration,2008,(28)1:139-145.
[4]刘恢先.唐山大地震震害[M].北京:地震出版社,1986.LIU Huixian.Disasters of Tangshan Earthquake[M].Beijing:Seismological Press,1986.
[5]李光华,卓秋林,生墨海.斜交桥抗震设计研究现状综述[J].公路交通科技(应用技术版),2007,(10):94-96.LI Guanghua,ZHUO Xiulin,SHENG Mohai.Research situation of seismic design for skew bridges[J].Journal of Highway and Transportation Re-search and Development.2007,(10):94-96.
[6]朱美珍.公路桥梁震害预测的实用方法[J].同济大学学报,1994,(22)3:279-283.ZHU Meizhen.A pratical method for predicting seismic damage of highway bridges[J].Journal of Tongji University,1994,(22)3:279-283.
[7]朱昱,赵成刚.人工神经元网络在桥梁震害预测中的应用[J].地震工程与工程振动,1995,15卷增刊.ZHU Yu,ZHAO Chenggang.Application of neural network to earthquake engineering[J].Journal of Earthquake Engineering and Engineering Vi-bration,1995,Vol.15,Supplement.
[8]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.ZHU Daqi,SHI Hui.Mechanism and Application of Neuronal Network System[M].Beijing:Science Press,2006.
[9]中国地震局工程力学研究所.汶川地震工程震害科学考察总结报告[R],2009.Institute of engineering mechanics,China earthquake administration.Final report of scientific expedition for seismic damage of engineering structures in Wenchuan earthquake[R],2009.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心