宁江松花江特大桥主桥地震安全性评价与抗震设计
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摘要
宁江松花江特大桥主桥结构采用四塔单索面矮塔斜拉桥结构,在抗震设计过程中采用E1和E2二水平设防,E1地震作用下采用多振型反应谱法,E2地震作用下采用非线性时程法进行抗震分析,可以为类似工程设计提供参考。
Ningjiang Songhua River bridge locates in a seismic intensity Ⅷ zone in Songyuan City,Jilin Province.The structure of main bridge is with four towers and single cable plane cablestayed bridge with low towers structure.In the process of seismic design,El and E2 two levels of fortification are adopted.The earthquake recurrence interval of El and E2 is set as100 years and 2 000 years,respectively.The multi mode response spectrum method for El earthquake,and the nonlinear time-history method for E2 earthquake are employed in seismic response analysis.Our results provide a reference for the design of similar project.
Ningjiang Songhua River bridge locates in a seismic intensity Ⅷ zone in Songyuan City,Jilin Province.The structure of main bridge is with four towers and single cable plane cablestayed bridge with low towers structure.In the process of seismic design,El and E2 two levels of fortification are adopted.The earthquake recurrence interval of El and E2 is set as100 years and 2 000 years,respectively.The multi mode response spectrum method for El earthquake,and the nonlinear time-history method for E2 earthquake are employed in seismic response analysis.Our results provide a reference for the design of similar project.
引文
重庆交通科研设计院.公路桥梁抗震设计细则[M].北京:人民交通出版社,2008.
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中国地震局地球物理研究所,等.工程场地地震安全性评价宣贯教材[M].北京:中国标准出版社,2005.
吉林省工程地震研究中心.宁江松花江特大桥工程场地地震安全性评价报告[R].2008.
裴岷山,张喜刚,袁洪,等.苏通大桥主桥结构体系研究[J].公路,2009,5:24-27.
彭大波,李建中,范立础.能力设计法在双层高架桥梁抗震设计中的应用[J].世界桥梁,2009,1:12-15.
王想,王海涛,王红蕾,等.华北北部及东北地区地震空区和条带统计特征分析[J].地震地磁观测与研究,2011,32(4):2-3
中国地震局地球物理研究所,等.工程场地地震安全性评价宣贯教材[M].北京:中国标准出版社,2005.
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