独塔双索面曲线铁路斜拉桥抗震性能分析
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摘要
以穗盐路特大铁路桥为对象,对安装E型钢阻尼支座的独塔双索面曲线铁路斜拉桥的抗震性能进行了研究。建立了斜拉桥的动力有限元模型之后,考虑两种地震水平力的作用,采用反应谱法和非线性动力时程分析法对斜拉桥的抗震性能做了数值分析。研究表明,横向约束销钉剪断后,安装了E型钢阻尼支座的桥梁结构的地震内力响应相比无减震体系有较好的改善,且桥梁各代表截面及桩基础内力等的抗震验算均满足相应的抗震性能要求。
The E type steel damper bearing was added to the Huiyan road railway bridge with signle tower and double cable plane.In this study,how the seisemic performance of Huiyan road railway bridge was improved by added the E type steel damper is studied.Based on the dynamic finite element model of the cable-stayed bridge,the seismic performance of the bridge are analyzed in terms of response spectrum method and nonlinear dynamic analysis method,where two levels of earthquake forces are considered.Research results show that,if ignoring the impaction of the lateral constrained pins after their destruction,the installation of E type steel damper bearing shall improve the seismic performances of the bridge structure compared to system without added damping,and for the representative sections of the bridge and the internal forces of the pile foundations,their seismic performance requirements are satisfied.
The E type steel damper bearing was added to the Huiyan road railway bridge with signle tower and double cable plane.In this study,how the seisemic performance of Huiyan road railway bridge was improved by added the E type steel damper is studied.Based on the dynamic finite element model of the cable-stayed bridge,the seismic performance of the bridge are analyzed in terms of response spectrum method and nonlinear dynamic analysis method,where two levels of earthquake forces are considered.Research results show that,if ignoring the impaction of the lateral constrained pins after their destruction,the installation of E type steel damper bearing shall improve the seismic performances of the bridge structure compared to system without added damping,and for the representative sections of the bridge and the internal forces of the pile foundations,their seismic performance requirements are satisfied.
引文
[1]傅士才.斜拉桥横向减震设计研究[J].公路交通科技,2007(11):103-106.
[2]Song T T,Dargush G F.Passive Energy Dissipation System in Structure Engineering[M].New York:State Universityof New York,1997.
[3]Arrayal A K,Yang J N.Optimal Placement of Passive Dampers on Seismic and Wind Excited Buildings Using Combina-torial Optimization[J].Journal of Intelligent Material Systems and Structures,1999,12(10):997-1014.
[4]周锡元,吴育才.工程抗震的新发展[M].北京:清华大学出版社,2002.
[5]梁伟,李宁.E型钢阻尼支座在桥梁减震中的应用[J].四川建筑,2011,31(1):148-150.
[6]王月钱,钟铁毅,顾正伟,等.E型钢支座对铁路简支梁桥隔震效果研究[J],铁道建筑,2010(9):21-23
[7]罗世东,饶少臣.四线铁路钢箱混合梁弯斜拉桥设计研究[J].中国铁路科学,2011,32(5):32-37.
[8]刘军,宁响亮,李文斌,等.弹塑性钢阻尼元件在桥梁减震中的应用[J].铁道建筑,2012(2):22-24.
[9]郑晓龙,胡京涛,雷建胜.减隔震支座在铁路桥梁上的应用探索[J].铁道建筑技术,2010(S1):159-162.
[10]李杰,李娜.单索面低塔斜拉板桁组合公铁两用桥地震响应分析[J].铁道建筑,2010(1):4-7.
[2]Song T T,Dargush G F.Passive Energy Dissipation System in Structure Engineering[M].New York:State Universityof New York,1997.
[3]Arrayal A K,Yang J N.Optimal Placement of Passive Dampers on Seismic and Wind Excited Buildings Using Combina-torial Optimization[J].Journal of Intelligent Material Systems and Structures,1999,12(10):997-1014.
[4]周锡元,吴育才.工程抗震的新发展[M].北京:清华大学出版社,2002.
[5]梁伟,李宁.E型钢阻尼支座在桥梁减震中的应用[J].四川建筑,2011,31(1):148-150.
[6]王月钱,钟铁毅,顾正伟,等.E型钢支座对铁路简支梁桥隔震效果研究[J],铁道建筑,2010(9):21-23
[7]罗世东,饶少臣.四线铁路钢箱混合梁弯斜拉桥设计研究[J].中国铁路科学,2011,32(5):32-37.
[8]刘军,宁响亮,李文斌,等.弹塑性钢阻尼元件在桥梁减震中的应用[J].铁道建筑,2012(2):22-24.
[9]郑晓龙,胡京涛,雷建胜.减隔震支座在铁路桥梁上的应用探索[J].铁道建筑技术,2010(S1):159-162.
[10]李杰,李娜.单索面低塔斜拉板桁组合公铁两用桥地震响应分析[J].铁道建筑,2010(1):4-7.
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