新型多功能桥梁滑移-减隔震支座性能试验
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摘要
针对传统桥梁减隔震支座性能单一,无法满足正常使用荷载及地震极端荷载等不同工况的现状,设计了一种新型多功能滑移-减隔震支座,通过理论分析与有限元模拟相结合的方式建立了该多功能支座的剪切性能曲线,并阐述了该曲线的力学特性及各个关键点的意义。在此基础上,进行了压缩性能、剪切性能及其相关性试验。结果表明:新型多功能滑移-减隔震支座能够达到预期目标,可同时满足桥梁在正常使用阶段的滑移和地震作用下的耗能要求;支座剪切性能曲线的有限元分析结果与试验结果吻合良好,有限元分析得到的剪切性能曲线可有效描述其力学行为;所得结论为后续桥梁减隔震设计及动力时程分析提供了参考。
The traditional bridge sliding-isolation bearing's performance was single and couldn't meet the situation in different cases,such as normal load,severe seismic load,etc.In order to solve the problem,a new type of multifunctional sliding-isolation bearing was designed.Combining the theoretical analysis and finite element simulation,the shear behavior curve of the new type multifunctional sliding-isolation bearing was established.The mechanical property and the meaning of each key point of the curve were explained.Based on this,the correlation experiments on the compression behavior,shear behavior of the sliding-isolation bearing were carried out.Results show that the new type of multifunctional sliding-isolation bearing can achieve the predicted target.The developed bearing can meet the bridge demands of sliding in normal use and energy dissipation under earthquake action.Moreover,the finite element analysis results of shear behavior curve of bearing agree well with the experiment results.Therefore,the theoretical shear behavior curve can effectively reflect the mechanical property of bearing.The obtained results can provide basis for sliding-isolation design and dynamic time-history analysis ofthe bridges in the future.
The traditional bridge sliding-isolation bearing's performance was single and couldn't meet the situation in different cases,such as normal load,severe seismic load,etc.In order to solve the problem,a new type of multifunctional sliding-isolation bearing was designed.Combining the theoretical analysis and finite element simulation,the shear behavior curve of the new type multifunctional sliding-isolation bearing was established.The mechanical property and the meaning of each key point of the curve were explained.Based on this,the correlation experiments on the compression behavior,shear behavior of the sliding-isolation bearing were carried out.Results show that the new type of multifunctional sliding-isolation bearing can achieve the predicted target.The developed bearing can meet the bridge demands of sliding in normal use and energy dissipation under earthquake action.Moreover,the finite element analysis results of shear behavior curve of bearing agree well with the experiment results.Therefore,the theoretical shear behavior curve can effectively reflect the mechanical property of bearing.The obtained results can provide basis for sliding-isolation design and dynamic time-history analysis ofthe bridges in the future.
引文
[1]范立础,王志强.桥梁减隔震设计[M].北京:人民交通出版社,2001.FAN Li-chu,WANG Zhi-qiang.Seismic Mitigation and Isolation Design of Bridges[M].Beijing:China Communications Press,2001.
[2]PRIESTLEY M J N,SEIBLE F,CALVI G M.Seismic Design and Retrofit of Bridges[M].New York:John Wiley&Sons,1996.
[3]EN 1998-1-1:1994,Eurocode 8:Design of Structures for Earthquake Resistance of Structures.Part 1:General Rules,Seismic Actions and Rules for Buildings[S].
[4]CONSTANTINOU M C,MOKHA A S,REINHORN A M.Study of Sliding Bearing and Helical-steelspring Isolation System[J].Journal of Structural Engineering,1991,117(4):1257-1275.
[5]朱玉华,吕西林.组合基础隔震系统地震反应分析[J].土木工程学报,2004,37(4):76-81.ZHU Yu-hua,LU Xi-lin.Analysis of the Seismic Response of the Combined Isolating System[J].China Civil Engineering Journal,2004,37(4):76-81.
[6]魏陆顺.组合隔震与三维隔震(振)理论及试验研究[D].哈尔滨:哈尔滨工业大学,2009.WEI Lu-shun.Theoretic and Experimental Study of Combined Base Isolation and Three-dimensional Seismic and Vibration Isolation[D].Harbin:Harbin Institute of Technology,2009.
[7]王建强,丁永刚,李大望.组合基础隔震结构双向地震反应分析[J].地震工程与工程振动,2007,27(3):126-131.WANG Jian-qiang,DING Yong-gang,LI Da-wang.Analysis of Seismic Responses for Base-isolated Structures with Combined Isolation System Under Bilateral Ground Excitation[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(3):126-131.
[8]赵世峰,熊进刚,程文瀼,等.并联基础隔震框架在竖向压应力变化时的隔震层性能分析[J].振动工程学报,2008,21(4):417-421.ZHAO Shi-feng,XIONG Jin-gang,CHENG Wenrang,et al.Analysis of Base-isolated Layer Combined by Rubber and Sliding Isolated Bearings Under Vertical Stress Variation[J].Journal of Vibration Engineering,2008,21(4):417-421.
[9]徐义,卢文胜.并联组合基础隔震体系的简化计算方法及试验分析[J].结构工程师,2011,27(增1):294-299.XU Yi,LU Wen-sheng.Seismic Testing and a Simplified Calculating Method for Parallel-composite Base Isolation System[J].Structural Engineers,2011,27(S1):294-299.
[10]张立涛.橡胶隔震支座与滑移隔震支座并联的基础隔震体系研究[D].南京:东南大学,2005.ZHANG Li-tao.Research on Parallel Base Isolation Seismic System with Rubber and Sliding Supports[D].Nanjing:Southeast University,2005.
[11]BONDONET G,FILIATRAULT A.Frictional Response of PTFE Sliding Bearings at High Frequencies[J].Journal of Bridge Engineering,1997,2(4):139-148.
[12]荣强,盛严,程文瀼.滑移隔震支座的试验研究及力学模型[J].工程力学,2010,27(12):40-45.RONG Qiang,SHENG Yan,CHENG Wen-rang.Experimental Investigation and Mechanical Model of Sliding Isolation Bearings[J].Engineering Mechanics,2010,27(12):40-45.
[13]张富有.基础隔震的可靠度及串、并联隔震的研究[D].南京:东南大学,2003.ZHANG Fu-you.Research on Reliability of Base Isolation and Performance of Parallel and Series Isolation Structures[D].Nanjing:Southeast University,2003.
[14]GB 20688.4—2007,橡胶支座——第4部分:普通橡胶支座[S].GB 20688.4—2007,Rubber Bearings—Part 4:Normal Rubber Bearings[S].
[15]GB/T 20688.1—2007,橡胶支座——第1部分:隔震橡胶支座试验方法[S].GB/T 20688.1—2007,Rubber Bearings—Part 1:Seismic Protection Isolators Test Methods[S].
[16]GB 20688.2—2006,橡胶支座——第2部分:桥梁隔震橡胶支座[S].GB 20688.2—2006,Rubber Bearings—Part 2:Elastomeric Seismic-protection Isolators for Bridges[S].
[2]PRIESTLEY M J N,SEIBLE F,CALVI G M.Seismic Design and Retrofit of Bridges[M].New York:John Wiley&Sons,1996.
[3]EN 1998-1-1:1994,Eurocode 8:Design of Structures for Earthquake Resistance of Structures.Part 1:General Rules,Seismic Actions and Rules for Buildings[S].
[4]CONSTANTINOU M C,MOKHA A S,REINHORN A M.Study of Sliding Bearing and Helical-steelspring Isolation System[J].Journal of Structural Engineering,1991,117(4):1257-1275.
[5]朱玉华,吕西林.组合基础隔震系统地震反应分析[J].土木工程学报,2004,37(4):76-81.ZHU Yu-hua,LU Xi-lin.Analysis of the Seismic Response of the Combined Isolating System[J].China Civil Engineering Journal,2004,37(4):76-81.
[6]魏陆顺.组合隔震与三维隔震(振)理论及试验研究[D].哈尔滨:哈尔滨工业大学,2009.WEI Lu-shun.Theoretic and Experimental Study of Combined Base Isolation and Three-dimensional Seismic and Vibration Isolation[D].Harbin:Harbin Institute of Technology,2009.
[7]王建强,丁永刚,李大望.组合基础隔震结构双向地震反应分析[J].地震工程与工程振动,2007,27(3):126-131.WANG Jian-qiang,DING Yong-gang,LI Da-wang.Analysis of Seismic Responses for Base-isolated Structures with Combined Isolation System Under Bilateral Ground Excitation[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(3):126-131.
[8]赵世峰,熊进刚,程文瀼,等.并联基础隔震框架在竖向压应力变化时的隔震层性能分析[J].振动工程学报,2008,21(4):417-421.ZHAO Shi-feng,XIONG Jin-gang,CHENG Wenrang,et al.Analysis of Base-isolated Layer Combined by Rubber and Sliding Isolated Bearings Under Vertical Stress Variation[J].Journal of Vibration Engineering,2008,21(4):417-421.
[9]徐义,卢文胜.并联组合基础隔震体系的简化计算方法及试验分析[J].结构工程师,2011,27(增1):294-299.XU Yi,LU Wen-sheng.Seismic Testing and a Simplified Calculating Method for Parallel-composite Base Isolation System[J].Structural Engineers,2011,27(S1):294-299.
[10]张立涛.橡胶隔震支座与滑移隔震支座并联的基础隔震体系研究[D].南京:东南大学,2005.ZHANG Li-tao.Research on Parallel Base Isolation Seismic System with Rubber and Sliding Supports[D].Nanjing:Southeast University,2005.
[11]BONDONET G,FILIATRAULT A.Frictional Response of PTFE Sliding Bearings at High Frequencies[J].Journal of Bridge Engineering,1997,2(4):139-148.
[12]荣强,盛严,程文瀼.滑移隔震支座的试验研究及力学模型[J].工程力学,2010,27(12):40-45.RONG Qiang,SHENG Yan,CHENG Wen-rang.Experimental Investigation and Mechanical Model of Sliding Isolation Bearings[J].Engineering Mechanics,2010,27(12):40-45.
[13]张富有.基础隔震的可靠度及串、并联隔震的研究[D].南京:东南大学,2003.ZHANG Fu-you.Research on Reliability of Base Isolation and Performance of Parallel and Series Isolation Structures[D].Nanjing:Southeast University,2003.
[14]GB 20688.4—2007,橡胶支座——第4部分:普通橡胶支座[S].GB 20688.4—2007,Rubber Bearings—Part 4:Normal Rubber Bearings[S].
[15]GB/T 20688.1—2007,橡胶支座——第1部分:隔震橡胶支座试验方法[S].GB/T 20688.1—2007,Rubber Bearings—Part 1:Seismic Protection Isolators Test Methods[S].
[16]GB 20688.2—2006,橡胶支座——第2部分:桥梁隔震橡胶支座[S].GB 20688.2—2006,Rubber Bearings—Part 2:Elastomeric Seismic-protection Isolators for Bridges[S].
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