采用新型辅助墩的超大跨斜拉桥顺桥向损伤控制新体系研究
|
摘要
以一座试设计斜拉桥为例,采用动力弹塑性时程分析并以Park损伤指数、位移作为评价指标,研究采用辅助墩的斜拉桥顺桥向结构体系的抗震性能,并探讨不同型式桥墩对其抗震性能和损伤控制效果的影响。结果表明:采用新型辅助墩的超大跨斜拉桥顺桥向结构体系具有更好的抗震性能和损伤控制效果,且具有分层耗能机制,即附加的耗能构件可有效减缓辅助墩的地震损伤,辅助墩又可有效减缓主塔的地震损伤;附有剪切连杆的新型桥墩的抗震性能优于传统型桥墩,剪切连杆不仅可提高桥墩的刚度,而且可有效减小其地震损伤,起附加耗能作用。
Elasto-plastic analyses were carried out to investigate the seismic performance of a novel structural system, the core of which is to share more the girder inertia force and to dissipate more earthquake input energy and to limit the seismic damage of tower by a novel supporting pier. In addition, the influences of several types of supporting pier on the seismic performance and damage controlling of the novel structural system were investigated. In this paper, aiming at a trial designed cable-stayed bridge with a central span of 1,400 m, numerical simulation techniques are utilized to analyze the seismic performance of the novel structural system based on Park damage indices and displacement under extremely earthquake input with PGA=1.0g. The results show that the effects of the novel structural system with novel supporting piers on improving seismic performance is superior to those of the structural system with other piers; the novel structural system is a hierarchical energy dissipation mechanisms of structural system, namely the supplemental energy dissipation components can effectively mitigate the seismic damage of the supporting pier and the supporting pier can effectively mitigate the seismic damage of the tower; the seismic performance of the novel pier with shear links are superior to these of conventional piers because the shear links can not only increase the stiffness of piers, but also mitigate the seismic damage of piers.
Elasto-plastic analyses were carried out to investigate the seismic performance of a novel structural system, the core of which is to share more the girder inertia force and to dissipate more earthquake input energy and to limit the seismic damage of tower by a novel supporting pier. In addition, the influences of several types of supporting pier on the seismic performance and damage controlling of the novel structural system were investigated. In this paper, aiming at a trial designed cable-stayed bridge with a central span of 1,400 m, numerical simulation techniques are utilized to analyze the seismic performance of the novel structural system based on Park damage indices and displacement under extremely earthquake input with PGA=1.0g. The results show that the effects of the novel structural system with novel supporting piers on improving seismic performance is superior to those of the structural system with other piers; the novel structural system is a hierarchical energy dissipation mechanisms of structural system, namely the supplemental energy dissipation components can effectively mitigate the seismic damage of the supporting pier and the supporting pier can effectively mitigate the seismic damage of the tower; the seismic performance of the novel pier with shear links are superior to these of conventional piers because the shear links can not only increase the stiffness of piers, but also mitigate the seismic damage of piers.
引文
[1]Seim C.The seismic retrofit of the golden gate bridge[C]//PRC-US Workshop on Seismic Analysis and Design of Special Bridges.Shanghai,2002
[2]陈永祁,马良喆.苏通长江大桥限位阻尼器的设计和测试[J].现代交通技术,2008(4):20-24(Chen Yongqi,Ma Liangzhe.Design and evaluation of limited displacement of damper Sutong Yangtze river bridge[J].Modern Transportation Technology,2008(4):20-24(in Chinese))
[3]李建中,袁万城.斜拉桥减震、耗能体系非线性纵向地震反应分析[J].中国公路学报,1998(1):71-76(Li Jianzhong,Yuan Wancheng.Nonlinear longitudinal seismic response analysis of cable-stayed bridge systems with energy dissipation[J].China Journal of Highway and Transport,1998(1):71-76(in Chinese))
[4]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(7):859-863(Ye Aijun,Fan Lichu.Seismic response reduction of a super-long-span cable-stayed bridge by adding dampers[J].Journal of Tongji Universty:Natural Science Edition,2006(7):859-863(in Chinese))
[5]Tang M C,Manzanarez R,Nader M,et al,Replacing the east bay bridge[J].Civil Engineering,2000,70(9):38-43
[6]Combault J,Pecker A,Teyssandier J P,et al,Rion-antirion bridge,Greece-concept,design,and construction[J].Structural Engineering International,2005,15(1):22-27
[7]McDaniel C C and Seible F.Influence of inelastic tower links on cable-supported bridge response[J].Journal of Bridge Engineering,2005,10(3):272-280
[8]Vader T S McDaniel C C.Influence of dampers on seismic response of cable-supported bridge towers[J].Journal of Bridge Engineering,2007,12(3):373-379
[9]Usami T,Lu Z,Ge H A seismic upgrading method for steel arch bridges using buckling-restrained braces[J].Earthquake Engineering and Structural Dynamics,2005,34(4/5):471-496
[10]Carden L P,Itani A M,Buckle I G.Seismic performance of steel girder bridges with ductile cross frames using single angle X braces[J].Journal of Structural Engineering,2006,132(3):329-337
[11]Carden L P,Itani A M,Buckle I G.Seismic performance of steel girder bridges with ductile cross frames using bucklingrestrained braces[J].Journal of Structural Engineering,2006,132(3):338-345
[12]El-Bahey S Bruneau M.Bridge piers with structural fuses and Bi-steel columns.I:experimental testing[J].Journal of Bridge Engineering,2012,17(1):25-35
[13]El-Bahey S,Bruneau M.Bridge piers with structural fuses and Bi-steel columns.II:analytical investigation[J].Journal of Bridge Engineering,2012,17(1):36-46
[14]Sun L,Wei J,Xie W,Experimental studies on seismic performance of subsidiary piers for long span cable-stayed bridge with energy dissipation[J].Advances in Structural Engineering,2013,16(9):1567-1578
[15]魏俊.斜拉桥耗能型辅助墩抗震性能与损伤控制设计方法研究[D].上海:同济大学,2013(Wei Jun.Investigation on seismic performance and damage control design of energy dissipation subsidiary piers for cable-stayed bridges[D].Shanghai:Tongji University,2013(in Chinese))
[16]谢文,孙利民.采用耗能辅助墩的超大跨斜拉桥顺桥向地震损伤控制[J].中南大学学报:自然科学版,2013,44(11):4672-4681(Xie Wen,Sun Limin.Seismic damage control of long span cable-stayed bridges by supporting piers with energy dissipating in the longitudinal direction[J].Journal of Central South University:Science and Technology Edition,2013,44(11):4672-4681(in Chinese))
[17]Park Y J,Ang A H S.Mechanistic seismic damage model for reinforced concrete[J].Journal of Structural Engineering,1985,111(4):722-739
[18]Kunnath S K,Reinhorn A M,Lobo R F.IDARC version3.0:a program for the inelastic damage analysis of RC structures[R].Buffalo NY:National Center for Earthquake Engineering Research,State University of New York,1992
[19]谢文.考虑地震损伤控制的超大跨斜拉桥结构体系研究[D].上海:同济大学,2013(Xie Wen.Study on structural system with seismic damage control for super long-span cable-stayed bridge[D].Shanghai:Tongji University,2013(in Chinese))
[20]Park Y J,Ang A H S,Wen Y K.Damage-limiting aseismic design of buildings[J].Earthquake Spectra,1987,3:1-26
[21]孙斌.超千米级斜拉桥结构体系研究[D].上海:同济大学,2008:51-52(Sun Bin.Study of structural systems for cable-stayed bridge with ultra kilometer span[D].Shanghai:Tongji University,2008:51-52(in Chinese))
[2]陈永祁,马良喆.苏通长江大桥限位阻尼器的设计和测试[J].现代交通技术,2008(4):20-24(Chen Yongqi,Ma Liangzhe.Design and evaluation of limited displacement of damper Sutong Yangtze river bridge[J].Modern Transportation Technology,2008(4):20-24(in Chinese))
[3]李建中,袁万城.斜拉桥减震、耗能体系非线性纵向地震反应分析[J].中国公路学报,1998(1):71-76(Li Jianzhong,Yuan Wancheng.Nonlinear longitudinal seismic response analysis of cable-stayed bridge systems with energy dissipation[J].China Journal of Highway and Transport,1998(1):71-76(in Chinese))
[4]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(7):859-863(Ye Aijun,Fan Lichu.Seismic response reduction of a super-long-span cable-stayed bridge by adding dampers[J].Journal of Tongji Universty:Natural Science Edition,2006(7):859-863(in Chinese))
[5]Tang M C,Manzanarez R,Nader M,et al,Replacing the east bay bridge[J].Civil Engineering,2000,70(9):38-43
[6]Combault J,Pecker A,Teyssandier J P,et al,Rion-antirion bridge,Greece-concept,design,and construction[J].Structural Engineering International,2005,15(1):22-27
[7]McDaniel C C and Seible F.Influence of inelastic tower links on cable-supported bridge response[J].Journal of Bridge Engineering,2005,10(3):272-280
[8]Vader T S McDaniel C C.Influence of dampers on seismic response of cable-supported bridge towers[J].Journal of Bridge Engineering,2007,12(3):373-379
[9]Usami T,Lu Z,Ge H A seismic upgrading method for steel arch bridges using buckling-restrained braces[J].Earthquake Engineering and Structural Dynamics,2005,34(4/5):471-496
[10]Carden L P,Itani A M,Buckle I G.Seismic performance of steel girder bridges with ductile cross frames using single angle X braces[J].Journal of Structural Engineering,2006,132(3):329-337
[11]Carden L P,Itani A M,Buckle I G.Seismic performance of steel girder bridges with ductile cross frames using bucklingrestrained braces[J].Journal of Structural Engineering,2006,132(3):338-345
[12]El-Bahey S Bruneau M.Bridge piers with structural fuses and Bi-steel columns.I:experimental testing[J].Journal of Bridge Engineering,2012,17(1):25-35
[13]El-Bahey S,Bruneau M.Bridge piers with structural fuses and Bi-steel columns.II:analytical investigation[J].Journal of Bridge Engineering,2012,17(1):36-46
[14]Sun L,Wei J,Xie W,Experimental studies on seismic performance of subsidiary piers for long span cable-stayed bridge with energy dissipation[J].Advances in Structural Engineering,2013,16(9):1567-1578
[15]魏俊.斜拉桥耗能型辅助墩抗震性能与损伤控制设计方法研究[D].上海:同济大学,2013(Wei Jun.Investigation on seismic performance and damage control design of energy dissipation subsidiary piers for cable-stayed bridges[D].Shanghai:Tongji University,2013(in Chinese))
[16]谢文,孙利民.采用耗能辅助墩的超大跨斜拉桥顺桥向地震损伤控制[J].中南大学学报:自然科学版,2013,44(11):4672-4681(Xie Wen,Sun Limin.Seismic damage control of long span cable-stayed bridges by supporting piers with energy dissipating in the longitudinal direction[J].Journal of Central South University:Science and Technology Edition,2013,44(11):4672-4681(in Chinese))
[17]Park Y J,Ang A H S.Mechanistic seismic damage model for reinforced concrete[J].Journal of Structural Engineering,1985,111(4):722-739
[18]Kunnath S K,Reinhorn A M,Lobo R F.IDARC version3.0:a program for the inelastic damage analysis of RC structures[R].Buffalo NY:National Center for Earthquake Engineering Research,State University of New York,1992
[19]谢文.考虑地震损伤控制的超大跨斜拉桥结构体系研究[D].上海:同济大学,2013(Xie Wen.Study on structural system with seismic damage control for super long-span cable-stayed bridge[D].Shanghai:Tongji University,2013(in Chinese))
[20]Park Y J,Ang A H S,Wen Y K.Damage-limiting aseismic design of buildings[J].Earthquake Spectra,1987,3:1-26
[21]孙斌.超千米级斜拉桥结构体系研究[D].上海:同济大学,2008:51-52(Sun Bin.Study of structural systems for cable-stayed bridge with ultra kilometer span[D].Shanghai:Tongji University,2008:51-52(in Chinese))
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