客运专线桥梁非线性地震反应分析
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摘要
客运专线桥梁结构形式复杂,桥墩截面尺寸比一般的铁路桥梁大很多,这使得桥跨结构的纵横向刚度都比较大,整体造价也提高了很多,由于所述客运专线桥梁的特殊性和重要性,保证客运专线桥梁的抗震安全则显得很重要,同时也要求桥梁抗震设计时采用延性抗震设计。新的铁路工程抗震规范所提出的延性抗震设计采用非线性时程分析方法,这种计算方法复杂、计算成本比较高,不易被一般工程设计人员掌握,而Push-over分析方法作为一种结构非线性反应的简化计算方法,是一种结构抗震能力评价的新方法。这种分析方法通过对结构施加不断增大的侧向荷载直到达到一定的目标,可以知道结构在地震作用下的需求能力,能够得出更多的重要信息,且操作简便。本文以京津城际轨道新开河特大桥为工程背景,研究了两种分析方法在客运专线桥梁抗震分析中的应用,对客运专线桥梁进行抗震评价,并对两种分析方法进行比较,得到了较一致的结果。
系统地分析了非线性时程分析方法和Push-over分析方法的基本概念和原理,介绍了非线性时程分析方法的两种直接积分方法,同时介绍了桥梁结构侧向荷载分布模式的选择;讨论了几种常用的Push-over分析方法,详细论述了能力谱方法的应用过程。通过实例进行客运专线桥梁结构的非线性时程分析和Push-over分析,分析桥梁结构的抗震能力,判断了客运专线桥梁在场地地震烈度下的破损极限状态。比较Push-over分析方法与时程分析方法的计算结果,验证了本文所采用的Push-over分析方法在客运专线连续梁桥中应用的合理性及准确性,表明对于客运专线连续梁桥结构可以采用Push-over分析方法进行结构抗震能力评定。
图69幅,表12个,参考文献60篇。
Passenger dedicated railway bridge structures are very complex, and dimensions of piers are much more larger than other common railway bridges.So their lateral and longitudinal rigidity is more bigger.The whole construction costs are also increared much more.It is very important to guarantee seismic safety of such structures because of the particularity and importance of them. At the same time,the ductile seismic design is needed by passenger dedicated railway bridges in earthquake zones.Nonlinear time history analysis method suggested by seismic code is complex for engineers . Push-over analytical method is regarded as a new seismic evaluation method and also as a simplified one. This method is an efficient tool in performance-based design method which pushes structures with some kind of load patterns until target displacement is reached.This method can evaluate the structural performance under earthquake events. Push-over analysis can get more information than static elastic analysis, and it is easy to operate in most cases. Seismic performance of Xinkaihe River extra major bridge on Beijing-Tianjin intercity rail transit is evaluated using nonlinear time history analysis method and push-over method. The results obtained by two methods are compared in detail.
The basic principles and concepts of the push-over analysis method and nonlinear time-history are systemically discussed. Two time-history analysis calculate methods and the distributing patterns of lateral loads are studied, and several push-over methods are compared.The capacity spectrum method is emphasized. Finally, according to the true bridge Xinkaihe River extra major bridge is used to demonstrate the rationality of the push-over analytical method on passenger dedicated railway bridges by comparing with nonlinear time-history analysis method. We also analysis the seismic performance of the passenger dedicated railway bridge.It can be concluded that push-over analytical method is a reasonable method for seismic evaluation of passenger dedicated railway bridges. There are 69 diagrams, 12 tables and 60 references in this paper.
系统地分析了非线性时程分析方法和Push-over分析方法的基本概念和原理,介绍了非线性时程分析方法的两种直接积分方法,同时介绍了桥梁结构侧向荷载分布模式的选择;讨论了几种常用的Push-over分析方法,详细论述了能力谱方法的应用过程。通过实例进行客运专线桥梁结构的非线性时程分析和Push-over分析,分析桥梁结构的抗震能力,判断了客运专线桥梁在场地地震烈度下的破损极限状态。比较Push-over分析方法与时程分析方法的计算结果,验证了本文所采用的Push-over分析方法在客运专线连续梁桥中应用的合理性及准确性,表明对于客运专线连续梁桥结构可以采用Push-over分析方法进行结构抗震能力评定。
图69幅,表12个,参考文献60篇。
Passenger dedicated railway bridge structures are very complex, and dimensions of piers are much more larger than other common railway bridges.So their lateral and longitudinal rigidity is more bigger.The whole construction costs are also increared much more.It is very important to guarantee seismic safety of such structures because of the particularity and importance of them. At the same time,the ductile seismic design is needed by passenger dedicated railway bridges in earthquake zones.Nonlinear time history analysis method suggested by seismic code is complex for engineers . Push-over analytical method is regarded as a new seismic evaluation method and also as a simplified one. This method is an efficient tool in performance-based design method which pushes structures with some kind of load patterns until target displacement is reached.This method can evaluate the structural performance under earthquake events. Push-over analysis can get more information than static elastic analysis, and it is easy to operate in most cases. Seismic performance of Xinkaihe River extra major bridge on Beijing-Tianjin intercity rail transit is evaluated using nonlinear time history analysis method and push-over method. The results obtained by two methods are compared in detail.
The basic principles and concepts of the push-over analysis method and nonlinear time-history are systemically discussed. Two time-history analysis calculate methods and the distributing patterns of lateral loads are studied, and several push-over methods are compared.The capacity spectrum method is emphasized. Finally, according to the true bridge Xinkaihe River extra major bridge is used to demonstrate the rationality of the push-over analytical method on passenger dedicated railway bridges by comparing with nonlinear time-history analysis method. We also analysis the seismic performance of the passenger dedicated railway bridge.It can be concluded that push-over analytical method is a reasonable method for seismic evaluation of passenger dedicated railway bridges. There are 69 diagrams, 12 tables and 60 references in this paper.
引文
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[3]范立础,李建中,王君杰.高架桥梁抗震设计.北京:人民交通出版社,2001
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[5]M.J.N普瑞斯特雷,袁万成等译.桥梁抗震设计与加固[M].北京:人民交出版社,1997
[6]谢旭.桥梁结构地震响应分析与抗震设计.北京:人民交通出版社,2006
[7]张新培.钢筋混凝土抗震结构非线性分析.北京:科学出版社,2003
[8]彭俊生,罗永坤.结构概念分析与SAP2000应用.四川:西南交通大学出版社,2005
[9]张洪俊.SAP2000桥梁结构分析应用方法与实例.北京:人民交通出版社,2005
[10]崔高航.桥梁结构Push-over方法研究.中国地震局工程力学研究所硕士论文,2003
[11]Hamed Salem Alayed.Seismic analysis of bridges using nonlinear static procedure.The dissertation of Doctor of Philosophy of Maryland university.2002
[12]中华人民共和国交通部部标准《公路工程抗震设计规范》(CJTJ044-89).北京:人民交通出版社,2004
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[14]常岭.桥梁的抗震变形能力.工程抗震,1987,04
[15]李彦峰,魏翠玲.SAP2000在桥梁结构Pushover分析中的应用.华东公路报第三期.2006
[16]罗国基.高墩简支梁桥的非线性时程分析.企业技术开发.2007,26(1)
[17]叶燎原,潘文.结构静力弹塑性分析(push-over)的原理和计算实例.建筑结构.2000,21(1)
[18]李峻,叶燎原.Push-over分析法及其与非线性动力分析的对比.世界地震工程.1999,15(2)
[19]杨薄等.结构静力弹塑性分析(Push-over)方法的改进.建筑结构学报.2000,2(44)
[20]亚勇.关于设计反应谱,时程法和能量方法的探讨.建筑结构学报.2000,21(1)
[21]钱稼茹,罗文斌.建筑结构基于位移的抗震设计[J].建筑结构.2001,31(14)3-6
[22]何浩祥,李宏男.基于规范弹性反应谱建立需求谱的方法.世界地震工程.2002,18(3)
[23]Ashraf Habibullah,S.E.,and Stephen Pyle,S.E.Practical threee dimensional nonlinear static pushover analysis.Structure Maganzine,Winter,1998
[24]王东升,翟桐等.利用Push-over方法评估桥梁的抗震安全性.世界地震工程.2000,16(2)
[25]王东升,郭恩栋,柳春光等.钢筋混凝土圆形截面柱式桥墩抗震性能评价.世界地震工程.2000,16(2)
[26]阎贵平,项海帆.具有单排桩基梁式桥墩的实用延性抗震验算方法研究.土木工程学 报.1993,26(2)
[27]中华人民共和国国家标准.建筑抗震设计规范(GB50011-2001).北京:中国建筑工业出版社
[28]R.W.克拉夫,J.彭津著,王光远等译.结构动力学.北京:科学出版社,1983
[29]中华人民共和国国家标准.预应力混凝土结构抗震设计规程(JGJ140-2004).北京:中国建筑工业出版社
[30]王维.倒推分析在桥梁抗震性能评价中的应用.西南交通大学硕士学位论文.2007.4
[31]徐欣国,唐光武,郑晸.Pushover分析方法在双柱桥墩抗震性能评价上的应用.公路交通技术学报.2005.6(3)
[32]赵岩.桥梁抗震的线性/非线性分析方法研究.大连理工大学博士学位论文.2003.6
[33]王喜军.秦沈客运专线桥梁结构及设计,施工技术研究.西南交通大学硕士学位论文.2002.10
[34]宗德玲.基于Pushover分析的桥梁抗震能力评估方法研究.南京工业大学硕士学位陆文.2004.5
[35]李义宾.客运专线铁路桥梁设计新理念.客运专线铁路桥梁设计论文专辑.2007
[36]甄津津.客运专线铁路常用跨度桥梁桥墩设计.客运专线铁路桥梁设计论文专辑.2007
[37]马麟.桥梁结构弹塑性地震反应分析及延性抗震设计方法的研究.长安大学硕士学位论文.2005.6
[38]程海根,董明,李睿.桥梁延性抗震分析.工程力学学报增刊.1999
[39]王东升,冯启民,凌贤长等.桥梁非线性地震反应分析若干问题研究现状.地震工程与工程振动[J].2002,22(1)
[40]朱丽佳.考虑P-△效应的钢筋混凝土框架结构push-over分析[D].西安理工大学硕士学位论文.2005.3
[41]中华人民共和国铁道部部标准.铁路桥涵设计基本规范(TB10002.1-2005).北京:中国铁道出版社.
[42]M.N.FARDIS,Member-Type Models for the Nonlinear Seismic Response Analysis of Reinforced Concrete Structures,Experimental and Numerical Methods in Earthquake Engineering,1991,Brussels and Luxembourg.Printed in the Netherlands.
[43]M.H.El Naggar&M.Novak,Nonlinear Lateral Interaction in Pile Dynamics,Soil Dynamics and Earthquake Engineering,p141-157,1995.
[44]卓卫东.桥梁延性抗震设计研究.同济大学博士学位论文.2000.06.
[45]栗光华.高墩大跨度连续刚构桥地震响应分析.北京交通大学硕士学位论文.2007.05.
[46]吴素静.Push-over分析及时程分析在实际结构中的应用与研究.西安建筑科技大学硕士学位论文.2004.03.
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