不同地震激励下大跨度独塔斜拉桥减震控制研究
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摘要
以一座大跨度独塔斜拉桥为例,建立其有限元模型,利用时程分析法计算分析了弹性连接装置和阻尼器对大跨度独塔斜拉桥的减震效果,并着重分析了不同地震动特性(频谱特性和加速度峰值)对大跨度独塔斜拉桥减震效果的影响。分析表明,只要合理选取参数,在塔梁间设置弹性连接装置或阻尼器均能有效地控制梁端的地震位移和塔底的弯矩;不同地震动特性显著影响了两种装置的减震效果。
Vibration-suppressing effectiveness of the elastic link devices and the dampers for a long-span simple-tower cable-stayed bridge is calculated and analyzed through time-history analysis with its finite element model.The emphasis is placed on the influence of spectrum shape and peak acceleration of earthquake excitations.The investigation indicates that both the elastic link devices and the dampers with rational parameters may reduce the seismic displacement of the deck and the bending moment at the bottom of the tower significantly.Various earthquake excitations evidently influence the vibration-suppressing effectiveness of the two control devices.
Vibration-suppressing effectiveness of the elastic link devices and the dampers for a long-span simple-tower cable-stayed bridge is calculated and analyzed through time-history analysis with its finite element model.The emphasis is placed on the influence of spectrum shape and peak acceleration of earthquake excitations.The investigation indicates that both the elastic link devices and the dampers with rational parameters may reduce the seismic displacement of the deck and the bending moment at the bottom of the tower significantly.Various earthquake excitations evidently influence the vibration-suppressing effectiveness of the two control devices.
引文
[1]范立础.桥梁工程[M].北京:人民交通出版社,2001Fan Li-chu.Bridge Engineering[M].Beijing:People’s Traffic Press,2001(in Chinese)
[2]徐利平.超大跨度斜拉桥的结构体系分析[J].同济大学学报(自然科学版),2003,31(4):400～403Xu Li-ping.Structural System Analysis for Super-long Span Cable-stayed Bridges[J].Journal of Tongji University(Natural Science),2003,31(4):400～403(in Chinese)
[3]Guido Morgental.Cable-stayed Bridges Earthquake Response and Passive Control[D].Imperial College of Science Technology and Medicine,London,1999
[4]叶爱君,胡世德,范立础.斜拉桥抗震结构体系研究[J].桥梁建设,2002,(4):1～4Ye Ai-jun,Hu Shi-de,Fan Li-chu.Research on Aseismatic Structural System of Cable-stayed Bridge[J].Bridge Construction,2002,(4):1～4(in Chinese)
[5]ALI H M and Abdel-Ghaffar A M.Seismic Energy Dissipation for Cable-stayed Bridges Using Passive Devices[J].EESD,1994,23
[6]张文学,李建中,李怀峰.低重心斜拉桥地震响应特性研究[J].桥梁建设,2007,(5):21～23Zhang Wen-xue,Li Jian-zhong,Li Huai-feng.Study of Seismic Response Characteristics of Low Gravity Center Cable-Stayed Bridge[J].Bridge Construction,2002(4):1～4(in Chinese)
[7]黄小国,李建中,郭磊.地震作用下独塔斜拉桥合理约束体系[J].结构工程师,2008,24(6):29～35Huang Xiao-guo,Li Jian-zhong,Guo Lei.AppropriateConstraint Systems for Simple-Tower Cable-Stayed Bridges under Earthquake[J].Structural Engineers,2008,24(6):29～35(in Chinese)
[8]叶爱君,范立础.附加阻尼器对超大跨度斜拉桥的减震效果[J].同济大学学报(自然科学版),2006,34(7):859～863Ye Ai-jun,Fan Li-chu.Seismic Response Reduction of a Super-Long-Span Cable-Stayed Bridge by Adding Dampers[J].Journal of Tongji University(Natural Science),2006,34(7):859～863(in Chinese)
[9]叶爱君,胡世德,范立础.超大跨度斜拉桥的地震位移控制[J].土木工程学报,2004,37(12):38～43Ye Ai-jun,Hu Shi-de,Fan Li-chu.Seismic Displacement Control for Super-long-span Cable-stayed Bridges[J].China Civil Engineering Journal,2004,37(12):38～43(in Chinese)
[10]许春永,亓兴军,宋国富.行波输入下大跨斜拉桥减震控制分析[J].工程抗震与加固改造,2008,30(6):89～94Xu Chun-yong,Qi Xing-jun,Song Guo-fu.Analysis of Seismic Response Contral for Long-span Cable-stayed Bridge under traveling Ware Input[J].Earthquake Resistant Engineering and Retrofitting,2008,30(6):89～94(in Chinese)
[11]滕军,杜红劲,等.桥梁动力弹塑性分析方法对比研究[J].工程抗震与加固改造,2009,31(4):29～34Teng Jun,Du Hong-jin,et al.Study on Different Elastoplastic Dynamic Analysis Methods of Bridge[J].Earthquake Resistant Engineering and Retrofitting,2009,31(4):29～34(in Chinese)
[12]魏德敏,孔鹏,高晓楠.大跨斜拉桥非一致激励地震响应研究[J].工程抗震与加固改造,2012,34(1):26～30Wei De-min,Kong Peng,Gao Xiao-nan.Investigation for Seismic Response of A Long-span Cable-stayed Bridge under Non-uniform Excitation[J].Earthquake Resistant Engineering and Retrofitting,2012,34(1):26～30(in Chinese)
[2]徐利平.超大跨度斜拉桥的结构体系分析[J].同济大学学报(自然科学版),2003,31(4):400～403Xu Li-ping.Structural System Analysis for Super-long Span Cable-stayed Bridges[J].Journal of Tongji University(Natural Science),2003,31(4):400～403(in Chinese)
[3]Guido Morgental.Cable-stayed Bridges Earthquake Response and Passive Control[D].Imperial College of Science Technology and Medicine,London,1999
[4]叶爱君,胡世德,范立础.斜拉桥抗震结构体系研究[J].桥梁建设,2002,(4):1～4Ye Ai-jun,Hu Shi-de,Fan Li-chu.Research on Aseismatic Structural System of Cable-stayed Bridge[J].Bridge Construction,2002,(4):1～4(in Chinese)
[5]ALI H M and Abdel-Ghaffar A M.Seismic Energy Dissipation for Cable-stayed Bridges Using Passive Devices[J].EESD,1994,23
[6]张文学,李建中,李怀峰.低重心斜拉桥地震响应特性研究[J].桥梁建设,2007,(5):21～23Zhang Wen-xue,Li Jian-zhong,Li Huai-feng.Study of Seismic Response Characteristics of Low Gravity Center Cable-Stayed Bridge[J].Bridge Construction,2002(4):1～4(in Chinese)
[7]黄小国,李建中,郭磊.地震作用下独塔斜拉桥合理约束体系[J].结构工程师,2008,24(6):29～35Huang Xiao-guo,Li Jian-zhong,Guo Lei.AppropriateConstraint Systems for Simple-Tower Cable-Stayed Bridges under Earthquake[J].Structural Engineers,2008,24(6):29～35(in Chinese)
[8]叶爱君,范立础.附加阻尼器对超大跨度斜拉桥的减震效果[J].同济大学学报(自然科学版),2006,34(7):859～863Ye Ai-jun,Fan Li-chu.Seismic Response Reduction of a Super-Long-Span Cable-Stayed Bridge by Adding Dampers[J].Journal of Tongji University(Natural Science),2006,34(7):859～863(in Chinese)
[9]叶爱君,胡世德,范立础.超大跨度斜拉桥的地震位移控制[J].土木工程学报,2004,37(12):38～43Ye Ai-jun,Hu Shi-de,Fan Li-chu.Seismic Displacement Control for Super-long-span Cable-stayed Bridges[J].China Civil Engineering Journal,2004,37(12):38～43(in Chinese)
[10]许春永,亓兴军,宋国富.行波输入下大跨斜拉桥减震控制分析[J].工程抗震与加固改造,2008,30(6):89～94Xu Chun-yong,Qi Xing-jun,Song Guo-fu.Analysis of Seismic Response Contral for Long-span Cable-stayed Bridge under traveling Ware Input[J].Earthquake Resistant Engineering and Retrofitting,2008,30(6):89～94(in Chinese)
[11]滕军,杜红劲,等.桥梁动力弹塑性分析方法对比研究[J].工程抗震与加固改造,2009,31(4):29～34Teng Jun,Du Hong-jin,et al.Study on Different Elastoplastic Dynamic Analysis Methods of Bridge[J].Earthquake Resistant Engineering and Retrofitting,2009,31(4):29～34(in Chinese)
[12]魏德敏,孔鹏,高晓楠.大跨斜拉桥非一致激励地震响应研究[J].工程抗震与加固改造,2012,34(1):26～30Wei De-min,Kong Peng,Gao Xiao-nan.Investigation for Seismic Response of A Long-span Cable-stayed Bridge under Non-uniform Excitation[J].Earthquake Resistant Engineering and Retrofitting,2012,34(1):26～30(in Chinese)
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