大震铁路桥涵震害损失评估方法
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摘要
调查统计并分析了唐山地震和汶川地震中铁路桥梁的震害情况,提出了适用于震后铁路桥梁震害的应急评估方法;基于铁路桥梁的地震易损性评价,选取了典型的震害影响因素;采用最小二乘法,建立了用于计算混凝土铁路梁式桥震害指数的统计回归模型;提出了评价地震破坏等级的经验公式、经验系数及评判指数,并对铁路桥梁的震害损失比进行了专门研究;结合工程实例,给出了震后铁路桥梁震害损失评价的过程和步骤.
Based on the investigation,statistics and analysis of railway bridge seismic damages caused by Tangshan and Wenchuan earthquakes,an emergency assessment method of railway bridge damages was proposed.Based on railway bridge seismic vulnerability assessment,the typical earthquake damage influencing factors were determined.By the least squares method,a statistical regression model used to calculate the damage index of concrete railway beam-bridge was established.The empirical formula,empirical coefficient and evaluation index for earthquake damage were proposed.A special study on earthquake damage loss ratio of railway bridges was conducted.With an example,the detailed processes and procedures of the earthquake damage assessment for railway bridges were introduced.
Based on the investigation,statistics and analysis of railway bridge seismic damages caused by Tangshan and Wenchuan earthquakes,an emergency assessment method of railway bridge damages was proposed.Based on railway bridge seismic vulnerability assessment,the typical earthquake damage influencing factors were determined.By the least squares method,a statistical regression model used to calculate the damage index of concrete railway beam-bridge was established.The empirical formula,empirical coefficient and evaluation index for earthquake damage were proposed.A special study on earthquake damage loss ratio of railway bridges was conducted.With an example,the detailed processes and procedures of the earthquake damage assessment for railway bridges were introduced.
引文
[1]赵钊.梁式桥震害评估方法研究[D].哈尔滨:中国地震局工程力学研究所,2011.ZHAO Zhao.Seismic damage evaluation method for beambridge[D].Harbin:Institute of Engineering Mechanics,China Earthquake Administration,2011.(in Chinese)
[2]GB50111—2006,铁路工程抗震设计规范[S].北京:中国计划出版社,2009.GB 50111—2006,Code for seismic design of railway en-gineering[S].Beijing:China Planning Press,2009.(inChinese)
[3]王勇.公路地基液化判定、液化等级和液化区域研究[D].西安:长安大学,2002.WANG Yong.Research on the liquefaction assessmentand liquefaction-region of road foundation[D].Xi’an:Chang’an university,2002.(in Chinese)
[4]刘恢先.唐山大地震震害[M].北京:地震出版社,1986.LIU Huixian.Tangshan earthquake disaster[M].Be-ijing:Seismological Press,1986.(in Chinese)
[5]王再荣.梁式立交桥地震破坏等级划分及抗震性能研究[D].哈尔滨:中国地震局工程力学研究所,2010.WANG Zairong.Research on earthquake damage classif-ication and seismic performance of beam overpass[D].Harbin:Institute of Engineering Mechanics,ChinaEarthquake Administration,2010.(in Chinese)
[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.Practical method for earthquake damageprediction of road bridges[J].Journal of Tongji Univer-sity,1994,22(3):279-283.(in Chinese)
[7]管宇.实用多元统计分析[M].杭州:浙江大学出版社,2011.GUAN Yu.Practical multivariate statistical analysis[M].Hangzhou:Zhejiang University Press,2011.(inChinese)
[8]GB/T18208.4—2005,地震现场工作第四部分:灾害直接损失评估[S].北京:中国标准出版社,2005.GB/T 18208.4—2005,Post-earthquake field works-Part4:Assessment of direct loss[S].Beijing:Standards Pressof China,2005.(in Chinese)
[2]GB50111—2006,铁路工程抗震设计规范[S].北京:中国计划出版社,2009.GB 50111—2006,Code for seismic design of railway en-gineering[S].Beijing:China Planning Press,2009.(inChinese)
[3]王勇.公路地基液化判定、液化等级和液化区域研究[D].西安:长安大学,2002.WANG Yong.Research on the liquefaction assessmentand liquefaction-region of road foundation[D].Xi’an:Chang’an university,2002.(in Chinese)
[4]刘恢先.唐山大地震震害[M].北京:地震出版社,1986.LIU Huixian.Tangshan earthquake disaster[M].Be-ijing:Seismological Press,1986.(in Chinese)
[5]王再荣.梁式立交桥地震破坏等级划分及抗震性能研究[D].哈尔滨:中国地震局工程力学研究所,2010.WANG Zairong.Research on earthquake damage classif-ication and seismic performance of beam overpass[D].Harbin:Institute of Engineering Mechanics,ChinaEarthquake Administration,2010.(in Chinese)
[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.Practical method for earthquake damageprediction of road bridges[J].Journal of Tongji Univer-sity,1994,22(3):279-283.(in Chinese)
[7]管宇.实用多元统计分析[M].杭州:浙江大学出版社,2011.GUAN Yu.Practical multivariate statistical analysis[M].Hangzhou:Zhejiang University Press,2011.(inChinese)
[8]GB/T18208.4—2005,地震现场工作第四部分:灾害直接损失评估[S].北京:中国标准出版社,2005.GB/T 18208.4—2005,Post-earthquake field works-Part4:Assessment of direct loss[S].Beijing:Standards Pressof China,2005.(in Chinese)
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