基于摩擦摆球型支座的多跨曲线连续梁桥抗震性能

doi:10.13438/j.cnki.jdzk.2024.02.007

吉首大学学报（自然科学版） ›› 2024, Vol. 45 ›› Issue (2): 45-55.DOI: 10.13438/j.cnki.jdzk.2024.02.007

基于摩擦摆球型支座的多跨曲线连续梁桥抗震性能

李悦，宁哲,晏勇，单宏兰，罗安然

（1.北方工业大学土木工程学院，北京 100144；2.中和德汇工程技术有限公司，北京 100070)

出版日期:2024-03-25 发布日期:2024-04-16

Seismic Performance Analysis of Multi-Span Curved Continuous Girder Bridges Based on Friction Pendulum Spherical Bearings

LI Yue,NING Zhe,YAN Yong,SHAN Honglan,LUO Anran

(1.School of Civil Engineering,North China University of Technology,Beijing 100144,China;2.Zhonghe Dehui Engineering Technology Co.,Ltd.,Beijing 100070,China)

Online:2024-03-25 Published:2024-04-16
Contact: NING Zhe (1998-),male,was born in Shiyan City,Hubei Province,postgraduate student;research area is seismic hazard mitigation of buildings and structures.
About author:LI Yue (1979-),male,was born in Anyang City,Henan Province,professor of School of Civil Engineering,North China University of Technology,Ph. D.;research area is seismic hazard mitigation of buildings and structures
Supported by:
National Natural Science Foundation of China (51408009);Basic Research Funds for Universities in Beijing (110052971921/062)

摘要/Abstract

摘要：为了探讨多跨曲线连续梁桥的抗震性能和减隔震方法，对基于摩擦摆球型支座的多跨曲线连续梁桥构建了有限元模型，并进行了动力特性和非线性时程分析.结果表明，桥梁模型的纵向刚度弱于横向刚度，且第1阶振型对桥墩纵向地震反应贡献较大，振型参与系数为29.8%，第6阶振型对桥墩横向地震反应贡献较大，振型参与系数为20%；在E1地震作用下，设置的摩擦摆球型支座能够使桥梁保持弹性工作状态，且支座变形和伸缩缝宽度满足要求；在E2地震作用下，部分桥墩的截面最大弯矩需求大于截面的抗弯承载能力，而进一步的桥墩强度验算发现，结果均满足抗震需求.

关键词： 多跨曲线连续梁桥, 摩擦摆球型支座, 减隔震, 抗震性能

Abstract: To study the seismic performance and vibration isolation method of multi-span curved continuous girder bridge,a finite element model is established for the multi-span curved continuous girder bridge with friction pendulum spherical bearings,and the dynamic characteristics and nonlinear time analysis is carried out.Results show that the longitudinal stiffness of the bridge model is weaker than the transverse stiffness,and the first-order vibration mode contributes more to the longitudinal seismic response of the bridge pier,and the vibration mode participation coefficient is 29.8%;the sixth-order vibration mode contributes more to the transverse seismic response of the bridge pier,and the vibration mode participation coefficient is 20%;under the E1 earthquake,the friction pendulum spherical bearing can keep the bridge in elastic working condition,and the bearing deformation and expansion joint width meet the requirements,which proves the effectiveness of the selected and arranged friction pendulum spherical bearing;under the E2 earthquake,the maximum bending moment demand of the section of some piers is greater than the bending capacity of the section,but further strength tests were carried out on the piers,and they all meet the seismic demand.

Key words: multi-span continuous curve beam bridge, friction pendulum spherical bearing, seismic isolation design, seismic performance

李悦, 宁哲, 晏勇, 单宏兰, 罗安然. 基于摩擦摆球型支座的多跨曲线连续梁桥抗震性能[J]. 吉首大学学报（自然科学版）, 2024, 45(2): 45-55.

LI Yue, NING Zhe, YAN Yong, SHAN Honglan, LUO Anran. Seismic Performance Analysis of Multi-Span Curved Continuous Girder Bridges Based on Friction Pendulum Spherical Bearings[J]. Journal of Jishou University(Natural Sciences Edition), 2024, 45(2): 45-55.

参考文献

[1] HAN Qiang,JIA Zhenlei,ZHOU Yulong,et al.A Review of Research on Swaying Bridges for Post-Earthquake Recoverable Bridge Structures[J].Chinese Journal of Highways,2021,34(2):118-133.
[2] CAI Longwen.Analysis of Seismic Isolation Design of Large Span Continuous Girder Bridges[J].Fujian Transportation Science and Technology,2022,198(9):67-70;101.
[3] FANG Shengen,TANG Yongjiu.Effects of Seismically Isolated and Non-Seismically Isolated Bearings on the Seismic Susceptibility of Concrete Box Girder Bridges[J].Journal of Earthquake Engineering,2021,43(6):1368-1376.
[4] YU Weidong,ZHANG Yongliang,FENG Yacheng,et al.Analysis of Factors Influencing Mechanical Parameters of Key Components of Homogeneous Spherical Double Spherical Vibration Isolation Bearings[J].Journal of Earthquake Engineering,2019(5):1199-1206.
[5] MA Nan,CHEN Yan,ZHU Feng.Seismic Analysis of Bridges Using Vibration Isolation Bearings[J].Disaster Science,2019,34(S1):170-173.
[6] SHI Yan,PEI Yinhai,ZHANG Zhanhong,et al.Analysis of Seismic Response and Seismic Isolation Performance of Inclined Bridges Under Strong Earthquakes[J].World Earthquake Engineering,2023,39(2):105-112.
[7] LI Xiaobo.Study on the Vibration Control Effect of Two Types of Vibration Damping Devices for Railroad Bridges[J].Engineering Seismic and Reinforcement Modification,2022,44(6):92-97.
[8] ZHANG Yimin,WENG Guangyuan,CHENG Kaikai,et al.Analysis of the Effects of Different Combinations of Vibration Isolation Bearings on the Seismic Performance of Continuous Girder Bridges[J].Journal of Catastrophology,2023,38(4):34-38;55.
[9] Ministry of Transport of the People's Republic of China.Seismic Design Details for Highway Bridges:JTG/T B02-01-2008[S].Beijing:China Communications Press,2008:8;17-18.
[10] LIN Y Z,TIAN S Z.Study on the Influence of CFRP Strengthening Mode on the Seismic Performance of RC Bridge Pier[J].World Earthquake Engineering,2015,31(4):250-259.
[11] LI Xu,ZHONG Tieyi,XIA He,et al.Study on the Characteristics of Plastic Hinge of Reinforced Concrete Pier Under Axial Load[J].China Railway Science,2014,35(1):34-41.
[12] MANDER J B,PRIESTLEY M J N,PARK R.Theoretical Stress-Strain Model for Confined Concrete[J].Journal of Structural Engineering,1988,114(8):1804-1826.
[13] Ministry of Housing and Urban-Rural Development of the People's Republic of China.Code for Seismic Design of Urban Bridges:CJJ 166-2011[S].Beijing:China Architecture & Building Press,2011:33.

基于摩擦摆球型支座的多跨曲线连续梁桥抗震性能

Seismic Performance Analysis of Multi-Span Curved Continuous Girder Bridges Based on Friction Pendulum Spherical Bearings

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