摩擦-碟簧三维复合隔震支座的性能试验研究
|
摘要
对适用于大跨结构的摩擦-碟簧三维复合隔震支座进行了振动台试验研究,该支座在水平向和竖向分别采用摩擦滑移装置和碟型弹簧隔震。在水平向,试验重点测试了简谐激励和地震动激励下支座的滞回性能,考察了竖向荷载变化及地震动强度对隔震性能的影响,以期为建立水平隔震理论模型提供依据;在竖向,对碟型弹簧的等效阻尼比和等效刚度进行了测试,研究了竖向预压荷载和动力荷载对竖向滞回性能的影响。结果表明,复合隔震支座在水平向和竖向均具有较好的滞回性能,竖向等效阻尼比在0.10～0.15间,且随着预压荷载的增加而增大。
A new type of 3-dimensional seismic isolation bearing tested on shaking-table is introduced in the paper.The new bearing is combined with Teflon sliding system and helical springs in the horizontal direction,and the disc springs are utilized for seismic isolation in the vertical direction.To get the data for theoretical model,the hysteretic loops of the bearing excited by the sinusoidal excitation and recorded earthquake waves were tested in the horizontal direction,meanwhile,the performance of the bearing related to the vertical loading and input excitation was examined in details as well.In the vertical direction,the equivalent stiffness and damping ratio of the bearing which closely related to the pre-loadings was tested,and the damping ratio is 0.1 to 0.15,which increased with the vertical pre-loadings.It is shown that the bearing shares good performance in the horizontal and vertical direction.
A new type of 3-dimensional seismic isolation bearing tested on shaking-table is introduced in the paper.The new bearing is combined with Teflon sliding system and helical springs in the horizontal direction,and the disc springs are utilized for seismic isolation in the vertical direction.To get the data for theoretical model,the hysteretic loops of the bearing excited by the sinusoidal excitation and recorded earthquake waves were tested in the horizontal direction,meanwhile,the performance of the bearing related to the vertical loading and input excitation was examined in details as well.In the vertical direction,the equivalent stiffness and damping ratio of the bearing which closely related to the pre-loadings was tested,and the damping ratio is 0.1 to 0.15,which increased with the vertical pre-loadings.It is shown that the bearing shares good performance in the horizontal and vertical direction.
引文
[1]Soong T.T.andDargush G.F..Passive energy dissipation systems in structural engineering[M].Chichester:John Wiley&Sons Ltd.,1997.
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997.ZHOU Fulin.Vibaration control in structures[M].Beijing:Earthquake Publish Compaony,1997.
[3]薛素铎,蔡炎城,李雄彦,等.被动控制技术在大跨空间结构中的应用概况[M].世界地震工程,2009,25(3):25-33.XUE Suduo,CAI Yancheng,LI Xiongyan,et al.The present situation on application of passive control technology in long-span spatial structures[J].World Earthquake Engineering,2009,25(3):25-33.
[4]薛素铎.隔震与消能减振技术在大跨空间结构中的应用[J].建筑结构,2005,35(3):51-54.XUE suduo.Applications of seismic isolation and energy dissipation techniques in long-span roof structures[J].Building Structure,2005,35(3):51-54.
[5]张毅刚,曹资.厦门太古飞机工程维修基地网架抗震分析[J].空间结构,1999,5(1):35-42.ZHANG Yigang,CAO Zi.A seismic analysis for space frame of hangar in Xiamen Taigu Aircraft Maintenance base[J].Spatial Structures,2005,35(3):51-54.
[6]薛素铎,李雄彦,吴金志.120m跨维修机库的动力特性与地震响应分析[J].兰州理工大学学报,2006,33(suppl.):44-49.XUE Suduo,LI Xiongyan,WU Jinzhi.Dynamic characteristic and seismic response analysis of a hangar with 120m span[J].Journal of LanzhouUniversity of Technology,2006,33(suppl.):44-49.
[7]李雄彦.摩擦-弹簧三维复合隔震支座研究及其在大跨机库中的应用[D].北京工业大学博士学位论文,2008.LI Xiongyan.Study on friction-spring three-dimensional seismic isolation bearing and its application in a long span hangar[D].Dissertation fromBeijing University of Techndogy,2008.
[8]Mokha A,Constantinou M and Reinhorn A M.Teflon bearing in base isolationⅠ:testing[J].Journal of Structural Engineering,ASCE,1990,116(2):438-484.
[9]Constantinou M,Mokha A and Reinhorn A M.Teflon bearing in base isolationⅡ:modeling[J].Journal of Structural Engineering,ASCE,1990,116(2):455-474.
[10]Mokha A,Constantinou M and Reinhorn A M.Verification of friction model of teflon bearing under tri-axial load[J].Journal of Structural Engi-neering,1993,119(1):240-261.
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997.ZHOU Fulin.Vibaration control in structures[M].Beijing:Earthquake Publish Compaony,1997.
[3]薛素铎,蔡炎城,李雄彦,等.被动控制技术在大跨空间结构中的应用概况[M].世界地震工程,2009,25(3):25-33.XUE Suduo,CAI Yancheng,LI Xiongyan,et al.The present situation on application of passive control technology in long-span spatial structures[J].World Earthquake Engineering,2009,25(3):25-33.
[4]薛素铎.隔震与消能减振技术在大跨空间结构中的应用[J].建筑结构,2005,35(3):51-54.XUE suduo.Applications of seismic isolation and energy dissipation techniques in long-span roof structures[J].Building Structure,2005,35(3):51-54.
[5]张毅刚,曹资.厦门太古飞机工程维修基地网架抗震分析[J].空间结构,1999,5(1):35-42.ZHANG Yigang,CAO Zi.A seismic analysis for space frame of hangar in Xiamen Taigu Aircraft Maintenance base[J].Spatial Structures,2005,35(3):51-54.
[6]薛素铎,李雄彦,吴金志.120m跨维修机库的动力特性与地震响应分析[J].兰州理工大学学报,2006,33(suppl.):44-49.XUE Suduo,LI Xiongyan,WU Jinzhi.Dynamic characteristic and seismic response analysis of a hangar with 120m span[J].Journal of LanzhouUniversity of Technology,2006,33(suppl.):44-49.
[7]李雄彦.摩擦-弹簧三维复合隔震支座研究及其在大跨机库中的应用[D].北京工业大学博士学位论文,2008.LI Xiongyan.Study on friction-spring three-dimensional seismic isolation bearing and its application in a long span hangar[D].Dissertation fromBeijing University of Techndogy,2008.
[8]Mokha A,Constantinou M and Reinhorn A M.Teflon bearing in base isolationⅠ:testing[J].Journal of Structural Engineering,ASCE,1990,116(2):438-484.
[9]Constantinou M,Mokha A and Reinhorn A M.Teflon bearing in base isolationⅡ:modeling[J].Journal of Structural Engineering,ASCE,1990,116(2):455-474.
[10]Mokha A,Constantinou M and Reinhorn A M.Verification of friction model of teflon bearing under tri-axial load[J].Journal of Structural Engi-neering,1993,119(1):240-261.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心