大型渡槽设置隔震支座效果分析
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摘要
由于缺少动力特性资料及实际运用经验,我国渡槽抗震设计无可遵循,因此,研究大型渡槽的减隔震问题,具有十分重要的现实意义。针对南水北调工程中某渡槽结构,利用双线性模型对铅芯橡胶隔震支座的非线性滞回恢复力曲线进行模拟,以有限域内附加质量法考虑水体对渡槽槽身的动力作用,进行了不同支座结构地震反应的比较分析。结果表明隔震支座可以有效降低结构的地震响应,提高结构的抗震能力,成果可为渡槽的隔震设计提供参考。
Owing to the lack of dynamic property information and experience in practical application,seismic design of aqueduct has no standard to follow in our country.Study on the seismic mitigation and isolation of large aqueduct is of great practical significance.In accordance with some aqueduct in South to North Water Transfer Project,this paper simulates nonlinear hysteretic restoring force curve of isolation bearing of the lead core rubber aqueduct by bilinear model,compares and analyzes the earthquake response considering the interaction of the aqueduct bridge and the water-body in the aqueduct.The results show that the isolation bearing can reduce the structure's response to the earthquake and improve the ability of anti-seismic structure.
Owing to the lack of dynamic property information and experience in practical application,seismic design of aqueduct has no standard to follow in our country.Study on the seismic mitigation and isolation of large aqueduct is of great practical significance.In accordance with some aqueduct in South to North Water Transfer Project,this paper simulates nonlinear hysteretic restoring force curve of isolation bearing of the lead core rubber aqueduct by bilinear model,compares and analyzes the earthquake response considering the interaction of the aqueduct bridge and the water-body in the aqueduct.The results show that the isolation bearing can reduce the structure's response to the earthquake and improve the ability of anti-seismic structure.
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.(FANLi-chu,WANG Zhi-qiang.Vibra-tion-isolating Mechanism of Bridge[M].Beijing:ChinaCommunications Press,2001.(in Chinese))
[2]张俊发,刘云贺,王克成.铅芯橡胶减震技术在渡槽中的应用研究[J].水利学报,1999,(10):65-69.(ZHANG Jun-fa,LIU Yun-he,WANG Ke-cheng.Seis-mic response reduction for aqueduct by using LRB[J].Journal of Hydrodynamics,1999,(10):65-69.(in Chi-nese))
[3]张艳红.大型渡槽抗震概述[M].北京:地震出版社,2004.(ZHANG Yan-hong.Large Aqueduct Seismic O-verview[M].Beijing:Earthquake Press,2004.(in Chi-nese))
[4]徐建国,陈淮,王博.渡槽结构非线性隔震研究[J].长江科学院院报,2008,25(2):61-68.(XU Jian-guo,CHEN Huai,WANG Bo.Nonlinear vibration isola-tion study of aqueduct structure[J].Journal of YangtzeRiver Scientific Research Institute,2008,25(2):61-68.(in Chinese))
[5]徐建国,王博.渡槽结构动力性能的有限元分析[J].郑州工业大学学报,1999,20(2):67-69.(XUJian-guo,WANG Bo.Finite element analysis of structuraldynamic property for aqueduct[J].Journal of ZhengzhouUniversity of Technology,1999,20(2):67-69.(in Chi-nese))
[6]吴红华,李正农,袁文阳,等.渡槽结构地震反应的时程分析[J].中国农村水利水电,2002,(5):43-45.(WU Hong-hua,LI Zheng-nong,YUANG Wen-yang,et al.Analysis of time-process of earthquake reaction ofaqueduct structure[J].China Rural Water and Hydro-power,2002,(5):43-45.(in Chinese))
[7]李遇春,楼梦麟.强震下流体对渡槽槽身的作用[J].水利学报,2000,(3):46-52,58.(LI Yu-chun,LOUMeng-lin.Action of fluid on aqueduct body during strongearthquake[J].Journal of Hydrodynamics,2000,(3):46-52,58.(in Chinese))
[8]陈淮,祁冰,杜晓伟.大型双槽渡槽结构振动特性分析[J].世界地震工程,2001,17(1):93-97.(CHENHuai,QI Bing,DU Xiao-wei.Modal analysis of large-scale double cell aqueducts[J].World Earthquake Engi-neering,2001,17(1):93-97.(in Chinese))
[9]高兑现,李正农,唐永胜,等.渡槽结构地震反应分析[J].水力发电学报,2004,23(5):40-43,31.(GAODui-xian,LI Zheng-nong,TANG Yong-sheng,et al.An-ti-seismic analysis of aqueduct structure[J].Journal ofHydroelectric Engineering,2004,23(5):40-43,31.(inChinese))
[10]张艳红,胡晓.大型渡槽隔震研究[J].水利学报,2005,36(11):1307-1313.(ZHANG Yan-hong,HUXiao.Study on seismic isolation technology for large aque-ducts[J].Journal of Hydrodynamics,2005,36(11):1307-1313.(in Chinese))
[2]张俊发,刘云贺,王克成.铅芯橡胶减震技术在渡槽中的应用研究[J].水利学报,1999,(10):65-69.(ZHANG Jun-fa,LIU Yun-he,WANG Ke-cheng.Seis-mic response reduction for aqueduct by using LRB[J].Journal of Hydrodynamics,1999,(10):65-69.(in Chi-nese))
[3]张艳红.大型渡槽抗震概述[M].北京:地震出版社,2004.(ZHANG Yan-hong.Large Aqueduct Seismic O-verview[M].Beijing:Earthquake Press,2004.(in Chi-nese))
[4]徐建国,陈淮,王博.渡槽结构非线性隔震研究[J].长江科学院院报,2008,25(2):61-68.(XU Jian-guo,CHEN Huai,WANG Bo.Nonlinear vibration isola-tion study of aqueduct structure[J].Journal of YangtzeRiver Scientific Research Institute,2008,25(2):61-68.(in Chinese))
[5]徐建国,王博.渡槽结构动力性能的有限元分析[J].郑州工业大学学报,1999,20(2):67-69.(XUJian-guo,WANG Bo.Finite element analysis of structuraldynamic property for aqueduct[J].Journal of ZhengzhouUniversity of Technology,1999,20(2):67-69.(in Chi-nese))
[6]吴红华,李正农,袁文阳,等.渡槽结构地震反应的时程分析[J].中国农村水利水电,2002,(5):43-45.(WU Hong-hua,LI Zheng-nong,YUANG Wen-yang,et al.Analysis of time-process of earthquake reaction ofaqueduct structure[J].China Rural Water and Hydro-power,2002,(5):43-45.(in Chinese))
[7]李遇春,楼梦麟.强震下流体对渡槽槽身的作用[J].水利学报,2000,(3):46-52,58.(LI Yu-chun,LOUMeng-lin.Action of fluid on aqueduct body during strongearthquake[J].Journal of Hydrodynamics,2000,(3):46-52,58.(in Chinese))
[8]陈淮,祁冰,杜晓伟.大型双槽渡槽结构振动特性分析[J].世界地震工程,2001,17(1):93-97.(CHENHuai,QI Bing,DU Xiao-wei.Modal analysis of large-scale double cell aqueducts[J].World Earthquake Engi-neering,2001,17(1):93-97.(in Chinese))
[9]高兑现,李正农,唐永胜,等.渡槽结构地震反应分析[J].水力发电学报,2004,23(5):40-43,31.(GAODui-xian,LI Zheng-nong,TANG Yong-sheng,et al.An-ti-seismic analysis of aqueduct structure[J].Journal ofHydroelectric Engineering,2004,23(5):40-43,31.(inChinese))
[10]张艳红,胡晓.大型渡槽隔震研究[J].水利学报,2005,36(11):1307-1313.(ZHANG Yan-hong,HUXiao.Study on seismic isolation technology for large aque-ducts[J].Journal of Hydrodynamics,2005,36(11):1307-1313.(in Chinese))
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