高速铁路大跨连续梁桥减隔震方案讨论
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摘要
针对某铁路大跨连续梁桥,基于3种减隔震装置,提出了4种减隔震设计方案,利用非线性时程分析法对每种方案进行了计算分析。结果表明,液体粘滞阻尼器可有效改善桥梁纵向的受力和位移;双曲面球型减隔震支座能同时改善桥梁纵、横向的受力,但位移较大;液体阻尼器与双曲面减隔震支座配合使用可同时改善结构的纵、横受力,并且可控制位移;铅芯阻尼器耗能效果显著,位移基本可控,应继续开展研究。
For a railway large span continuous girder bridge,basing on three types of isolation devices,we give four kinds of seismic mitigation and isolation schemes,and calculate and analyze each scheme by using nonlinear time history analysis method. The results show that the liquid viscous dampers could improve the longitudinal mechanics and displacement performances of the bridge,and the double spherical aseismic bearing could ameliorate the longitudinal and transverse mechanics behaviors of the bridge at the same time,but leads to the large displacement. If the liquid viscous dampers are used in conjunction with double spherical aseismic bearing,the longitudinal and transverse mechanics behaviors could be improved and the displacement performance could be under control. The ability of lead damper for dissipation and absorbing earthquake energy is outstanding,and the displacements could be under control,so it needs more studies.
For a railway large span continuous girder bridge,basing on three types of isolation devices,we give four kinds of seismic mitigation and isolation schemes,and calculate and analyze each scheme by using nonlinear time history analysis method. The results show that the liquid viscous dampers could improve the longitudinal mechanics and displacement performances of the bridge,and the double spherical aseismic bearing could ameliorate the longitudinal and transverse mechanics behaviors of the bridge at the same time,but leads to the large displacement. If the liquid viscous dampers are used in conjunction with double spherical aseismic bearing,the longitudinal and transverse mechanics behaviors could be improved and the displacement performance could be under control. The ability of lead damper for dissipation and absorbing earthquake energy is outstanding,and the displacements could be under control,so it needs more studies.
引文
陈永祁.2012.桥梁工程液体黏滞阻尼器设计与施工[M].北京:中国铁道出版社.
范立础,王志强.2001.桥梁减隔震设计[M].北京:人民交通出版社.
焦驰宇,胡世德,管仲国.2007.FPS抗震支座分析模型的比较研究[J].振动与冲击,26(10):113-117.
李承根,高日.2009.高速铁路桥梁减震技术研究[J].中国工程科学,11(2):81-86.
刘书贤,魏晓刚,张弛,等.2014.基于隔震技术的桥梁结构抗采动变形抗地震保护[J].地震研究,37(1):86-93.
彭天波,李建中,范立础.2007.双曲面球型减隔震支座的开发及应用[J].同济大学学报(自然科学版),35(2):176-180.
王克海.2007.桥梁抗震研究[M].北京:中国铁道出版社.
夏修身,陈兴冲.2011.桥梁震害分析及合理抗震体系研究[J].工程抗震及加固改造,33(6):132-136.
叶爱君.2011.桥梁抗震[M].北京:人民交通出版社.
郑健.2008.中国高速铁路桥梁[M].北京:高等教育出版社.
周云,周福霖,邓雪松.1999.铅阻尼的应用和研究[J].世界地震工程,15(1):53-61.
UNI EN 15129—2009,Anti-seismic devices[S].
范立础,王志强.2001.桥梁减隔震设计[M].北京:人民交通出版社.
焦驰宇,胡世德,管仲国.2007.FPS抗震支座分析模型的比较研究[J].振动与冲击,26(10):113-117.
李承根,高日.2009.高速铁路桥梁减震技术研究[J].中国工程科学,11(2):81-86.
刘书贤,魏晓刚,张弛,等.2014.基于隔震技术的桥梁结构抗采动变形抗地震保护[J].地震研究,37(1):86-93.
彭天波,李建中,范立础.2007.双曲面球型减隔震支座的开发及应用[J].同济大学学报(自然科学版),35(2):176-180.
王克海.2007.桥梁抗震研究[M].北京:中国铁道出版社.
夏修身,陈兴冲.2011.桥梁震害分析及合理抗震体系研究[J].工程抗震及加固改造,33(6):132-136.
叶爱君.2011.桥梁抗震[M].北京:人民交通出版社.
郑健.2008.中国高速铁路桥梁[M].北京:高等教育出版社.
周云,周福霖,邓雪松.1999.铅阻尼的应用和研究[J].世界地震工程,15(1):53-61.
UNI EN 15129—2009,Anti-seismic devices[S].
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