Abstract:In order to explore the reasonable lateral seismic system of cable-stayed bridge under earthquake, taking a long-span cable-stayed bridge as an example, three kinds of lateral seismic system arrangement are proposed, namely, the lateral full limit system, the lateral sliding system and the lateral seismic isolation system with steel dampers. The nonlinear dynamic finite element model is established, and the lateral seismic response of these three seismic systems is analyzed by nonlinear time history method. The results show that the lateral vibration reduction and isolation system of long-span cable-stayed bridge can well control the lateral internal force and deformation of the structure, and the effect of seismic reduction and isolation is good. On this basis, three kinds of layout schemes of steel damper including setting at the main tower, at the main tower and transition pier, at the main tower and transition pier and auxiliary pier are selected, and the corresponding lateral seismic response is compared. Furthermore, the parameters of the optimal layout are analyzed. The results show that the transverse seismic performance of long-span cable-stayed bridge is the best when steel dampers are set at the main tower and transition pier, sliding bearing is set at the auxiliary pier, and the yield strength ratio of steel damper at the main tower and transition pier is generally 0.6~1.2. The research methods and ideas of transverse seismic design in this paper can provide reference for the design of transverse seismic system of cable-stayed bridges in practical projects.
李立峰,尹会娜,唐嘉豪,胡睿. 大跨径斜拉桥横向合理抗震体系研究[J]. 振动与冲击, 2022, 41(6): 153-159.
LI Lifeng,YIN Huina,TANG Jiahao,HU Rui. Reasonable lateral seismic system of a long-span cable stayed bridge. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(6): 153-159.
[1] 中华人民共和国交通部, JTG/T 2231-01-2020.公路桥梁抗震设计规范[S]. 北京:人民交通出版社,2020.
Ministry of Communications of the People's Republic of China. JTG/T 2231-01-2020. Specifications for Seismic Design of Highway Bridges[S]. Beijing: China Communication Press, 2020.
[2] Ali HM, Abdel-Ghaffar AM. Modeling the Nonlinear Seismic Behavior of Cable-stayed Bridges with Passive Control Bearings. Comput Struct 1995;54(3):461–92.
[3] Camara A. Seismic Behaviour of Cable-Stayed Bridges: A Review[J]. Medcrave Online Journal of Civil Engineering, 2018, 4(3): 161-169.
[4] H.M. ALI and A. M. Abdel-Ghaffar. Seismic Energy Dissipation for Cable-stayed Bridges Using Passive Devices[J]. Earthquake Engineering and Structural Dynamics, 1994,23,(8):877–893 .
[5] 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, 144(4): 1-4.
Ye Aijun, Hu Shide, Fan Lichu. Research on Aseismatic Structural System of Cable-stayed Bridge[J]. Bridge Construction, 2002, 144(4): 1-4.
[6] 李立峰, 刘本永, 张晨熙等. 中等跨径斜拉桥塔梁弹性约束装置的减震效应研究[J]. 地震工程与工程振动, 2013, 33(1): 146-152.
Li Lifeng, Liu Benyong, Zhang Chenxi, et al. Research on the Seismic Performance of Mid-Span Cable-stayed Bridges with Elastic Constraints between Tower and Beam[J]. Journal of Earthquake Engineering and Engineering Vibration, 2013, 33(1): 146-152.
[7] 叶爱君, 范立础. 超大跨度斜拉桥的横向约束体系[J]. 中国公路学报, 2007, 20(2): 63-67.
Ye Aijun, Fan Lichu. Lateral Constraint Systems for Super Long Span Cable-stayed Bridge[J]. China Journal of Highwayand Transport, 2007, 20(2): 63-67.
[8] 杨喜文,张文华,李建中. 大跨度斜拉桥横桥向减震研究[J]. 地震工程与工程振动,2012,32(01):86-92.
Yang Xiwen, Zhang Wenhua, Li Jianzhong. Seismic Design for Long-Span Cable-stayed Bridges in Transverse Direction [J]. Earthquake Engineering and Engineering Vibration, 2012, 32(1): 86-92.
[9] 沈星,倪晓博,叶爱君.桥梁新型横向金属阻尼器研究[J].振动与冲击,2014,33(21):96-101.
Shen Xing, Ni Xiaobo, Ye Aijun. Study on a New Type of Lateral Metal Damper for Bridge[J]. Journal of Vibration and Shock. 2014, 33(21): 96-101.
[10] Shen X, Wang X, Ye Q, et al. Seismic Performance of Transverse Steel Damper Seismic System for Long Span Bridges[J]. Engineering Structures, 2017, 141: 14-28.
[11] Camara A, Astiz M. Analysis and Control of Cable–stayed Bridges Subject to Seismic Action[J]. Structural Engineering International. 2014;24(1):27–63.
[12] Guan Z, You H, Li J. Lateral Isolation System of a Long-Span Cable-stayed Bridge with Heavyweight Concrete Girder in a High Seismic Region[J]. Journal of Bridge Engineering, 2017, 22(1): 04016104.
[13] 牛建涛, 丁阳, 石运东. 应用新型油阻尼器的斜拉桥横向减震体系[J]. 地震工程与工程振动, 2019, 39(2): 111-120.
Niu Jiantao, Ding Yang, Shi Yundong. Transverse Seismic Reduction System of Cable-stayed Bridge Introducing Oil Damper[J]. Earthquake Engineering and Engineering Vibration, 2019, 39(2): 111-120.
[14] 潘晋, 吴成亮, 仝强等. E 型钢阻尼器数值仿真及试验研究[J]. 振动与冲击, 2009, 28(7): 192-195.
Pan Jin, Wu Chengliang, Tong Qiang, et al. Simulation and Experimental Study of E Shape Steel Damper[J]. Journal of Vibration and Shock, 2009, 28(7): 192-195.
[15] 黄永福,马健,夏支贤. 强震区中等跨度斜拉桥抗震体系研究[J].振动与冲击,2020,39(15):237-242.
Huang Yongfu, Ma Jian, Xia Zhixian. A Seismic System of Medium-span Cable-stayed Bridge in Strong Earthquake Area[J]. Journal of Vibration and Shock, 2020, 39(15): 237-242.
[16] 范立础, 王志强. 桥梁减隔震设计[M]. 北京: 人民交通出版社, 2001.
Fan Lichu, Wang Zhiqiang. Seismic Isolation Design for Brides[M]. Beijing: China Communications Press, 2001: 88-91.
[17] 管仲国,李建中. 大跨度桥梁抗震体系研究[J/OL].中国科学:技术科学:1-12[2020-10-28].http://kns.cnki.net/kcms/detail/11.5844.TH.20200728.1550.002.html.
GUAN Zhongguo,LI Jianzhong. Advances in earthquake resisting systems for long-span bridges[J].
Scientia Sinica Technologica,2021(5):493-504.
[18] Guan Z, Li J, Xu Y. Performance Test of Energy Dissipation Bearing and it’s Application in Seismic Control of a Long-span Bridge[J]. Journal of Bridge Engineering, 2010, 15(6): 622-630.
[19] 徐艳, 曾诗杰. 斜拉桥横桥向设置钢阻尼器的减震优化研究[J]. 桥梁建设, 2017, 47(3): 53-58.
Xu Yan, Zeng Shijie. Study of Optimal Seismic Mitigation of Steel Dampers Arrangedon Cable-staved Bridge in Transverse Bridge Direction[J]. Bridge Construction, 2017, 47(3): 53-58.
[20] 沈星,倪晓博,叶爱君.大跨度斜拉桥边墩横向抗震体系研究[J].中国公路学报,2016,29(11):82-89+121.
Shen Xing, Ni Xiaobo, Ye Aijun. Study on Seismic System of Side Pier of Long span Cable-stayed Bridge in Transverse Direction[J]. China Journal of Highwayand Transport, 2016, 29(11): 82-89+121.
[21] Camara A, Cristantielli R, Astiz M A, et al. Design of hysteretic dampers with optimal ductility for the transverse seismic control of cable‐stayed bridges[J]. Earthquake Engineering & Structural Dynamics, 2017, 46(11): 1811-1833.