设置延性系梁的桥梁双柱墩抗震能力研究
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摘要
为研究设置延性系梁对减少桥梁双柱墩横桥向地震损伤的效果,基于OpenSees数值分析平台,建立了无系梁和设置延性系梁的双柱墩抗震数值分析模型,通过拟静力和增量动力分析手段对2种双柱墩在地震作用下的反应进行研究,讨论了延性系梁设置对双柱墩地震反应的影响。结果表明:延性系梁提高了桥梁双柱墩横桥向的强度和刚度,地震作用下,系梁先于桥墩发生屈服,形成塑性铰并耗散地震能量,延缓了桥墩的损伤破坏过程,并减少了桥墩的曲率延性系数和墩顶的最大位移角。
To study the effect of the ductile tie beam arranged for double-column bridge pier on reducing the transverse seismic damage to the pier,the numerical analysis models for the seismic resistance of the double-column bridge piers without and arranged with the ductile tie beam were built based on the OpenSees analysis platform.By means of the quasi-static and incremental dynamic analysis,the responses of the two kinds of the piers under the seismic action were studied and the effect of the tie beam on the seismic response of the pier was discussed.The results of the study show that the ductile tie beam can increase the transverse strength and rigidity of the double-column bridge pier.Under the seismic action,the tie beam yields before the pier will do and the tie beam acts as a kind of the plastic hinge and dissipates the seismic energy,which in turn retards the damage process of the pier and also decreases the curvature ductility factor of the pier and the maximum drift ratio of the top of the pier.
To study the effect of the ductile tie beam arranged for double-column bridge pier on reducing the transverse seismic damage to the pier,the numerical analysis models for the seismic resistance of the double-column bridge piers without and arranged with the ductile tie beam were built based on the OpenSees analysis platform.By means of the quasi-static and incremental dynamic analysis,the responses of the two kinds of the piers under the seismic action were studied and the effect of the tie beam on the seismic response of the pier was discussed.The results of the study show that the ductile tie beam can increase the transverse strength and rigidity of the double-column bridge pier.Under the seismic action,the tie beam yields before the pier will do and the tie beam acts as a kind of the plastic hinge and dissipates the seismic energy,which in turn retards the damage process of the pier and also decreases the curvature ductility factor of the pier and the maximum drift ratio of the top of the pier.
引文
[1]吕西林,陈云,蒋欢军.可更换连梁保险丝抗震性能试验研究[J].同济大学学报(自然科学版),2013,41(9):1 318-1 325,1 332.(LU Xi-lin,CHEN Yun,JIANG Huan-jun.Experimental Study on Seismic Behavior of Fuse of Replaceable Coupling Beam[J].Journal of Tongji University(Natural Science),2013,41(9):1 318-1 325,1 332.in Chinese)
[2]El-Bahey S,Bruneau M.Bridge Piers with Structural Fuses and Bi-Steel Columns I:Experimental Testing[J].Journal of Bridge Engineering,ASCE,2012,17(1):25-35.
[3]El-Bahey S,Bruneau M.Bridge Piers with Structural Fuses and Bi-Steel Columns II:Analytical Investigation[J].Journal of Bridge Engineering,ASCE,2012,17(1):36-46.
[4]谢文,孙利民,魏俊.附有结构“保险丝”构件的桥墩抗震性能试验研究及其应用[J].中国公路学报,2014,27(3):59-70.(XIE Wen,SUN Li-min,WEI Jun.Experimental Study on Seismic Performance of Bridge Piers with Structural“Fuse”Components and Application of Such Piers[J].China Journal of Highway and Transport,2014,27(3):59-70.in Chinese)
[5]Pantelides C P,Ward J P,Reaveley L D.Behavior of R/C Bridge Bent with Grade Beam Retrofit under Simulated Earthquake Loads[J].Earthquake Spectra,2004,20(1):91-118.
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[7]沈星,叶爱君,王晓伟.柔性横系梁双柱墩的抗震行为分析[J].同济大学学报(自然科学版),2013,41(3):342-347.(SHEN Xing,YE Ai-jun,WANG Xiao-wei.Analysis of Seismic Behavior of Double-Column Bridge Bent with Flexible Link Beam[J].Journal of Tongji University(Natural Science),2013,41(3):342-347.in Chinese)
[8]Wu Y F.Ductility Demand of Compression Yielding Fiber-Reinforced Polymer-Reinforced Concrete Beams[J].ACI Structural Journal,2008,105(1):104-110.
[9]吕西林,陈云,蒋欢军.带可更换连梁的双肢剪力墙抗震性能试验研究[J].同济大学学报(自然科学版),2014,42(2):175-182.(LU Xi-lin,CHEN Yun,JIANG Huan-jun.Experimental Study of Seismic Performance of Coupled Shear Wall Structure with Replaceable Coupling Beams[J].Journal of Tongji University(Natural Science),2014,42(2):175-182.in Chinese)
[10]Paolacci F,Giannini R.An Experimental and Numerical Investigation on the Cyclic Response of a Portal Frame Pier Belonging to an Old Reinforced Concrete Viaduct[J].Earthquake Engineering and Structural Dynamics,2012,41(6):1 109-1 127.
[11]何铭华,栾雨琪,刘晖,等.基于OpenSees的FRP约束混凝土本构开发及墩柱性能分析[J].桥梁建设,2013,43(6):19-26.(HE Ming-hua,LUAN Yu-qi,LIU Hui,et al.Development of FRP Confined Concrete Constitutive Model and Analysis of Pier/Column Behavior Based on OpenSees[J].Bridge Construction,2013,43(6):19-26.in Chinese)
[12]石岩,王东升,孙治国.近断层地震动下减隔震桥梁地震反应分析[J].桥梁建设,2014,44(3):19-24.(SHI Yan,WANG Dong-sheng,SUN Zhi-guo.Analysis of Seismic Response of Seismically Mitigated and Isolated Bridge Subjected to Near-Fault Ground Motion[J].Bridge Construction,2014,44(3):19-24.in Chinese)
[2]El-Bahey S,Bruneau M.Bridge Piers with Structural Fuses and Bi-Steel Columns I:Experimental Testing[J].Journal of Bridge Engineering,ASCE,2012,17(1):25-35.
[3]El-Bahey S,Bruneau M.Bridge Piers with Structural Fuses and Bi-Steel Columns II:Analytical Investigation[J].Journal of Bridge Engineering,ASCE,2012,17(1):36-46.
[4]谢文,孙利民,魏俊.附有结构“保险丝”构件的桥墩抗震性能试验研究及其应用[J].中国公路学报,2014,27(3):59-70.(XIE Wen,SUN Li-min,WEI Jun.Experimental Study on Seismic Performance of Bridge Piers with Structural“Fuse”Components and Application of Such Piers[J].China Journal of Highway and Transport,2014,27(3):59-70.in Chinese)
[5]Pantelides C P,Ward J P,Reaveley L D.Behavior of R/C Bridge Bent with Grade Beam Retrofit under Simulated Earthquake Loads[J].Earthquake Spectra,2004,20(1):91-118.
[6]兰峰,王克海.中小跨径双柱式高墩桥梁横系梁对抗震性能的影响[J].公路交通科技,2011,28(5):92(LAN Feng,WANG Ke-hai.Influences of Cross Tie Beams of High-Rise Double-Column Piers on Seismic Performance of Medium and Short Span Bridges[J].Journal of Highway and Transportation Research and Development,2011,28(5):92-97.in Chinese)
[7]沈星,叶爱君,王晓伟.柔性横系梁双柱墩的抗震行为分析[J].同济大学学报(自然科学版),2013,41(3):342-347.(SHEN Xing,YE Ai-jun,WANG Xiao-wei.Analysis of Seismic Behavior of Double-Column Bridge Bent with Flexible Link Beam[J].Journal of Tongji University(Natural Science),2013,41(3):342-347.in Chinese)
[8]Wu Y F.Ductility Demand of Compression Yielding Fiber-Reinforced Polymer-Reinforced Concrete Beams[J].ACI Structural Journal,2008,105(1):104-110.
[9]吕西林,陈云,蒋欢军.带可更换连梁的双肢剪力墙抗震性能试验研究[J].同济大学学报(自然科学版),2014,42(2):175-182.(LU Xi-lin,CHEN Yun,JIANG Huan-jun.Experimental Study of Seismic Performance of Coupled Shear Wall Structure with Replaceable Coupling Beams[J].Journal of Tongji University(Natural Science),2014,42(2):175-182.in Chinese)
[10]Paolacci F,Giannini R.An Experimental and Numerical Investigation on the Cyclic Response of a Portal Frame Pier Belonging to an Old Reinforced Concrete Viaduct[J].Earthquake Engineering and Structural Dynamics,2012,41(6):1 109-1 127.
[11]何铭华,栾雨琪,刘晖,等.基于OpenSees的FRP约束混凝土本构开发及墩柱性能分析[J].桥梁建设,2013,43(6):19-26.(HE Ming-hua,LUAN Yu-qi,LIU Hui,et al.Development of FRP Confined Concrete Constitutive Model and Analysis of Pier/Column Behavior Based on OpenSees[J].Bridge Construction,2013,43(6):19-26.in Chinese)
[12]石岩,王东升,孙治国.近断层地震动下减隔震桥梁地震反应分析[J].桥梁建设,2014,44(3):19-24.(SHI Yan,WANG Dong-sheng,SUN Zhi-guo.Analysis of Seismic Response of Seismically Mitigated and Isolated Bridge Subjected to Near-Fault Ground Motion[J].Bridge Construction,2014,44(3):19-24.in Chinese)
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