斜港大桥减隔震设计
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摘要
苏州斜港大桥新建工程为主跨180 m三跨双层拱梁组合桥,全钢结构。目前该桥型国内不多见。针对大桥的地震响应分析及减隔震设计作了详细论述,给出了该桥的抗震设计思路和减隔震设计措施。分别采用了反应谱和非线性时程分析方法对桥梁结构进行了计算分析,经过对多种工况的计算分析比较,最终采用粘滞阻尼器来减小结构的地震响应。
Suzhou Xiegang Bridge is a newly-constructed three span two-tier whole steel arch beam bridge with a main span of 180 m.Currently,this bridge type is rarely seen in China.The seismic respeonse analysis and seismic isolation design method were discussed in detail in this paper.The seismic design idea and seismic isolation and reduction method of this bridge were given out.Viscous damper was finally adopted to decrease the seismic response of its structure,through calculating the bridge structure with the methods of response spectrum and nonlinear time-history and comparing the calculations of loading operating conditions. The results provide a reference for the seismic design of similar bridges in the future.
Suzhou Xiegang Bridge is a newly-constructed three span two-tier whole steel arch beam bridge with a main span of 180 m.Currently,this bridge type is rarely seen in China.The seismic respeonse analysis and seismic isolation design method were discussed in detail in this paper.The seismic design idea and seismic isolation and reduction method of this bridge were given out.Viscous damper was finally adopted to decrease the seismic response of its structure,through calculating the bridge structure with the methods of response spectrum and nonlinear time-history and comparing the calculations of loading operating conditions. The results provide a reference for the seismic design of similar bridges in the future.
引文
[1]范立础.桥梁抗震[M].上海:同济大学出版社,1997. Fan Lichu.Seismic design of bridges[M].Shanghai: Tongji University Press,1997.(in Chinese)
[2]Priestley M J N,Seible F,Calvi G M.Seismic design and retrofit of bridges[M].New York;John Wiley and Sons,1996.
[3]于泳波,万振江,刘健新.减震技术在公路桥梁中的应用及地震反应分析[J].长安大学学报(自然科学版), 2004,24(2):58-60. Yu Yongbo,Wan Zhenjiang,Liu Jianxin.Seismic re- ??duction design for highway bridge and seismic response [J].Journal of Chang'an University(Natural Science Edition),2004,24(2):58-60.(in Chinese)
[4]Constantinou M C,Symans M D.Experimental and analytical investigation of seismic response of structures with supplemental fluid viscous dampers[R].Technical Report NCEER-92-0032,December 21,1992.
[5]Symth A W,Masri A F,Abdel-Ghaffar A M,et al.Development of a nonlinear multi-input-multi-output model for the Vincent Thomas Bridge under earthquake excitations [C].Proc.12th World Conference on Earthquake Engineering,Paper No.2211,Upper Hutt,New Zealand, 2000.
[6]Papanikolas P K.Deck superstructure and cable stays of the Rion-Antirion bridge[C].Proc.4th National Conference on Steel Structures,Patros,Greece,2002.
[7]Delis E A,Malla R B,Madani M,et al.Energy dissipation devices in bridges using hydraulic dampers[C]. Proc.Structure Congress XIV,2:188-196,Chicago,IL, 1996.
[8]卢浦大桥设置阻尼器研究报告[R].上海:同济大学土木工程防灾国家重点实验室,2002. Lupu bridge dampers study[R].Shanghai:State Key Laboratory of Civil Engineering and Disaster Reduction, Tongji University,2002.(in Chinese)
[2]Priestley M J N,Seible F,Calvi G M.Seismic design and retrofit of bridges[M].New York;John Wiley and Sons,1996.
[3]于泳波,万振江,刘健新.减震技术在公路桥梁中的应用及地震反应分析[J].长安大学学报(自然科学版), 2004,24(2):58-60. Yu Yongbo,Wan Zhenjiang,Liu Jianxin.Seismic re- ??duction design for highway bridge and seismic response [J].Journal of Chang'an University(Natural Science Edition),2004,24(2):58-60.(in Chinese)
[4]Constantinou M C,Symans M D.Experimental and analytical investigation of seismic response of structures with supplemental fluid viscous dampers[R].Technical Report NCEER-92-0032,December 21,1992.
[5]Symth A W,Masri A F,Abdel-Ghaffar A M,et al.Development of a nonlinear multi-input-multi-output model for the Vincent Thomas Bridge under earthquake excitations [C].Proc.12th World Conference on Earthquake Engineering,Paper No.2211,Upper Hutt,New Zealand, 2000.
[6]Papanikolas P K.Deck superstructure and cable stays of the Rion-Antirion bridge[C].Proc.4th National Conference on Steel Structures,Patros,Greece,2002.
[7]Delis E A,Malla R B,Madani M,et al.Energy dissipation devices in bridges using hydraulic dampers[C]. Proc.Structure Congress XIV,2:188-196,Chicago,IL, 1996.
[8]卢浦大桥设置阻尼器研究报告[R].上海:同济大学土木工程防灾国家重点实验室,2002. Lupu bridge dampers study[R].Shanghai:State Key Laboratory of Civil Engineering and Disaster Reduction, Tongji University,2002.(in Chinese)
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