改进的梁式公路桥震害评估方法
|
摘要
为了快速准确地评估受地震影响的梁式公路桥的破坏状态,以朱美珍提出的震害经验统计回归方法为基础,选取更为合理的梁式公路桥震害影响因素,基于唐山地震和汶川地震中部分梁式公路桥震害资料,采用最小二乘法回归得到新的震害影响因素系数,建立了一个改进的梁式公路桥震害评估方法.改进后的方法与原方法相比,最大的区别是综合考虑场地类别和地震烈度2个因素,来代替原方法中有关液化和边坡失稳对桥梁的影响.在算例分析中分别采用朱美珍方法和改进的评估方法对汶川地震中部分桥梁进行震害评估,经过与实际震害对比,初步验证了改进方法的准确性.
To estimate seismic damage of highway beam bridges quickly and accurately,influence factors of the seismic damage were more reasonably reselected in an improved methodology based on Zhu Mei-zhen's empirical methodology.The least squares method was used to analyze the data of partial bridges in Tangshan earthquake and Wenchuan earthquake.The improved methodology was formed with new regression coefficients of the influence factors.The main difference between the improved and original methodologies is that site classification and seismic intensity are considered together to take place of the influence factor of liquefaction and instability of side slope that are taken into account in original methodology.By using both the improved and original methodologies,some highway beam bridges in Wenchuan earthquake were estimated.Results show that compared with the real seismic damages,the improved model is preliminarily validated to be more accurate.
To estimate seismic damage of highway beam bridges quickly and accurately,influence factors of the seismic damage were more reasonably reselected in an improved methodology based on Zhu Mei-zhen's empirical methodology.The least squares method was used to analyze the data of partial bridges in Tangshan earthquake and Wenchuan earthquake.The improved methodology was formed with new regression coefficients of the influence factors.The main difference between the improved and original methodologies is that site classification and seismic intensity are considered together to take place of the influence factor of liquefaction and instability of side slope that are taken into account in original methodology.By using both the improved and original methodologies,some highway beam bridges in Wenchuan earthquake were estimated.Results show that compared with the real seismic damages,the improved model is preliminarily validated to be more accurate.
引文
[1]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 Ri-qing,FENG Biao,WANG Zi-fa.Study on the fastassessment of traffic capacity of highway bridges afterstrong earthquakes[J].World Earthquake Engineering,2009,25(2):81-87.(in Chinese)
[2]邹伟,段琴.桥梁地震易损性分析研究概述[J].浙江交通职业技术学院学报,2008,9(3):13-17.ZOU Wei,DUAN Qin.State of the art of studies onseismic vulnerability analysis of bridges[J].Journal ofZhejiang Institute of Communications,2008,9(3):13-17.(in Chinese)
[3]SHINOZUKA M,FENG M Q,LEE J.Statistical analysisof fragility curves[J].Journal of Engineering Mechanics,2000,126(2):1224-1231.
[4]CHOI E,DESROCHES R,NIELSON B.Seismic fragilityof typical bridges in moderate seismic zones[J].Engineering Structures,2004,26:187-199.
[5]KUBO K,KATAYAMA T.A simple method for evaluatingseismic safety of existing bridge structures[C]∥Proceedings of the 6th World Conference on EarthquakeEngineering.Meerut:Sarota Prakashan,1977,2:1951-1956.
[6]KUBO K.Quantitative evaluation of antiseismicity ofbridges[C]∥Proceedings of 8th World Conference onEarthquake Engineering.Englewood Cliffs:Prentice-Hall,Inc,1984,6:541-548.
[7]BUCKLE I G,KIM S H.A vulnerability assessment modalfor high way bridges[C]∥Technical Council on LifelineEarthquake Engineering.Proceedings of the Fourth U SConference.New York:American Society of CivilEngineers,1995:493-500.
[8]朱美珍.公路桥梁震害预测的实用方法[J].同济大学学报:自然科学版,1994,22(3):279-283.ZHU Mei-zhen.A practical method for predicting seismicdamage of highway bridges[J].Journal of TongjiUniversity:National Sciences Edition,1994,22(3):279-283.(in Chinese)
[9]徐风云,黄文机,王倩梅.梁式桥震害[M]∥刘恢先.唐山大地震震害(三).北京:地震出版社,1986:88-115.
[10]戴君武.大中型桥梁危险性与破坏等级判断模型[R].哈尔滨:中国地震局工程力学研究所,2007.
[11]康孝先,张迅.汶川地震对绵阳地区桥梁的损伤和应急处治[J].交通科学与工程,2009,25(4):37-43.KANG Xiao-xian,ZHANG Xun.Damage and emergencytreatment for bridges in Mianyang region after Wenchuanearthquake[J].Journal of Transport Science andEngineering,2009,25(4):37-43.(in Chinese)
[12]谢和平,台佳佳,邓建辉,等.虹口高原大桥的破坏机制分析[J].四川大学学报:工程科学版,2009,41(3):51-55.XIE He-ping,TAI Jia-jia,DENG Jian-hui,et al.Analysis of damage mechanism of Gaoyuan bridge inHongkou[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):51-55.(inChinese)
[13]孙治国,王东升,郭迅,等.汶川大地震绵竹市回澜立交桥震害调查[J].地震工程与工程振动,2009,29(4):132-138.SUN Zhi-guo,WANG Dong-sheng,GUO Xun,et al.Damage investigation of Huilan interchange in Mianzhuafter Wenchuan earthquake[J].Journal of EarthquakeEngineering and Engineering Vibration,2009,29(4):132-138.(in Chinese)
[14]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].哈尔滨:中国地震局工程力学研究所,2009.
[2]邹伟,段琴.桥梁地震易损性分析研究概述[J].浙江交通职业技术学院学报,2008,9(3):13-17.ZOU Wei,DUAN Qin.State of the art of studies onseismic vulnerability analysis of bridges[J].Journal ofZhejiang Institute of Communications,2008,9(3):13-17.(in Chinese)
[3]SHINOZUKA M,FENG M Q,LEE J.Statistical analysisof fragility curves[J].Journal of Engineering Mechanics,2000,126(2):1224-1231.
[4]CHOI E,DESROCHES R,NIELSON B.Seismic fragilityof typical bridges in moderate seismic zones[J].Engineering Structures,2004,26:187-199.
[5]KUBO K,KATAYAMA T.A simple method for evaluatingseismic safety of existing bridge structures[C]∥Proceedings of the 6th World Conference on EarthquakeEngineering.Meerut:Sarota Prakashan,1977,2:1951-1956.
[6]KUBO K.Quantitative evaluation of antiseismicity ofbridges[C]∥Proceedings of 8th World Conference onEarthquake Engineering.Englewood Cliffs:Prentice-Hall,Inc,1984,6:541-548.
[7]BUCKLE I G,KIM S H.A vulnerability assessment modalfor high way bridges[C]∥Technical Council on LifelineEarthquake Engineering.Proceedings of the Fourth U SConference.New York:American Society of CivilEngineers,1995:493-500.
[8]朱美珍.公路桥梁震害预测的实用方法[J].同济大学学报:自然科学版,1994,22(3):279-283.ZHU Mei-zhen.A practical method for predicting seismicdamage of highway bridges[J].Journal of TongjiUniversity:National Sciences Edition,1994,22(3):279-283.(in Chinese)
[9]徐风云,黄文机,王倩梅.梁式桥震害[M]∥刘恢先.唐山大地震震害(三).北京:地震出版社,1986:88-115.
[10]戴君武.大中型桥梁危险性与破坏等级判断模型[R].哈尔滨:中国地震局工程力学研究所,2007.
[11]康孝先,张迅.汶川地震对绵阳地区桥梁的损伤和应急处治[J].交通科学与工程,2009,25(4):37-43.KANG Xiao-xian,ZHANG Xun.Damage and emergencytreatment for bridges in Mianyang region after Wenchuanearthquake[J].Journal of Transport Science andEngineering,2009,25(4):37-43.(in Chinese)
[12]谢和平,台佳佳,邓建辉,等.虹口高原大桥的破坏机制分析[J].四川大学学报:工程科学版,2009,41(3):51-55.XIE He-ping,TAI Jia-jia,DENG Jian-hui,et al.Analysis of damage mechanism of Gaoyuan bridge inHongkou[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):51-55.(inChinese)
[13]孙治国,王东升,郭迅,等.汶川大地震绵竹市回澜立交桥震害调查[J].地震工程与工程振动,2009,29(4):132-138.SUN Zhi-guo,WANG Dong-sheng,GUO Xun,et al.Damage investigation of Huilan interchange in Mianzhuafter Wenchuan earthquake[J].Journal of EarthquakeEngineering and Engineering Vibration,2009,29(4):132-138.(in Chinese)
[14]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].哈尔滨:中国地震局工程力学研究所,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