[1] Lin Yuanzheng, Zong Zhouhong, Li Yale, Wang Liqi, et al. Seismic response analysis of a reinforced concrete continuousbridge considering coupling pounding-friction effect [J]. Journal of Southeast University (English Edition), 2018, 34 (3): 340-348. [doi:10.3969/j.issn.1003-7985.2018.03.009]
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Seismic response analysis of a reinforced concrete continuousbridge considering coupling pounding-friction effect(
)
考虑碰撞-摩擦耦合效应的钢筋混凝土连续梁桥地震响应分析
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 34
- Issue:
- 2018 3
- Page:
- 340-348
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2018-09-20
Info
- Title:
- Seismic response analysis of a reinforced concrete continuousbridge considering coupling pounding-friction effect
- 考虑碰撞-摩擦耦合效应的钢筋混凝土连续梁桥地震响应分析
- Author(s):
- Lin Yuanzheng, Zong Zhouhong, Li Yale, Wang Liqi
- School of Civil Engineering, Southeast University, Nanjing 210096, China
- Keywords:
- coupling pounding-friction effect; reinforced concrete continuous bridge; seismic response analysis; bi-directional ground motions; OpenSees
- PACS:
- U448.21
- DOI:
- 10.3969/j.issn.1003-7985.2018.03.009
- Abstract:
- To evaluate the coupling pounding-friction effect between bridge girders and retainers and its influence on bridge seismic response, a reinforced concrete(RC)continuous bridge is selected as the research object. Three bridge finite element(FE)models were built using OpenSees, in which the longitudinal and transverse pounding elements, as well as the transverse failure element of bearings were introduced. Based on this, the seismic response analysis considering the coupling pounding-friction effect was conducted for the continuous bridge subjected to bi-directional ground motions. Furthermore, the influential parameters were analyzed. The analysis results indicate that the coupling pounding-friction effect can alter the internal force distribution of the bridge structure and generate additional torsional force to bridge columns. The friction coefficient and longitudinal pounding gap size are two important factors. The appropriate friction coefficient and longitudinal pounding gap size can significantly reduce seismic response of girders, and effectively transfer part of the girder inertia force from the fixed columns to the sliding columns, which can reduce the seismic demands of the fixed columns and improve the seismic performance of continuous bridge structures.
- 为了研究连续梁桥主梁与横向挡块之间的碰撞-摩擦耦合效应及其对桥梁结构地震响应的影响, 以一座钢筋混凝土连续梁桥为研究对象, 基于OpenSees有限元程序建立了3座桥梁有限元模型, 其中考虑了纵向、横向的碰撞单元及支座的失效.在此基础上进行了连续梁桥在双向地震激励作用下考虑碰撞-摩擦耦合作用的地震响应分析, 并进行了影响参数分析.分析结果表明, 碰撞-摩擦耦合作用会改变桥梁结构的内力分布并对桥墩产生额外的扭转力, 摩擦系数及纵向碰撞间隙是2个重要因素.合理的摩擦系数及纵向碰撞间隙能够显著降低主梁地震响应, 并且有效地将部分作用于固定墩的主梁惯性力转移至滑动墩, 从而减小固定墩地震需求并改善连续梁桥结构的抗震性能.
References:
[1] Kawashima K, Takahashi Y, Ge H B, et al. Reconnaissance report on damage of bridges in 2008 Wenchuan, China, earthquake [J]. Journal of Earthquake Engineering, 2009, 13(7): 965-996. DOI:10.1080/13632460902859169.
[2] Kawashima K, Unjoh S, Hoshikuma J I, et al. Damage of bridges due to the 2010 Maule, Chile, Earthquake [J]. Journal of Earthquake Engineering, 2011, 15(7): 1036-1068. DOI:10.1080/13632469.2011.575531.
[3] Malhotra P K. Dynamics of seismic pounding at expansion joints of concrete bridges [J]. Journal of Engineering Mechanics, 1998, 124(7): 794-802. DOI:10.1061/(asce)0733-9399(1998)124:7(794).
[4] Ruangrassamee A, Kawashima K. Relative displacement response spectra with pounding effect [J]. Earthquake Engineering & Structural Dynamics, 2001, 30(10): 1511-1538. DOI:10.1002/eqe.75.
[5] DesRoches R, Muthukumar S. Effect of pounding and restrainers on seismic response of multiple-frame bridges [J]. Journal of Structural Engineering, 2002, 128(7): 860-869.DOI:10.1061/(asce)0733-9445(2002)128:7(860).
[6] Zhu P, Abe M, Fujino Y. Modelling three-dimensional non-linear seismic performance of elevated bridges with emphasis on pounding of girders [J]. Earthquake Engineering & Structural Dynamics, 2002, 31(11): 1891-1913. DOI:10.1002/eqe.194.
[7] Guo A X, Li Z J, Li H. Point-to-surface pounding of highway bridges with deck rotation subjected to bi-directional earthquake excitations[J]. Journal of Earthquake Engineering, 2011, 15(2): 274-302. DOI:10.1080/13632461003739730.
[8] Zhuo Y, Li Z X, Wang F. 3D impact model and non-linear response analysis for seismic pounding of bridges [J]. China Civil Engineering Journal, 2014, 47(5): 71-80.(in Chinese)
[9] Li B, Bi K M, Chouw N, et al. Experimental investigation of spatially varying effect of ground motions on bridge pounding [J]. Earthquake Engineering & Structural Dynamics, 2012, 41(14): 1959-1976. DOI:10.1002/eqe.2168.
[10] He L X, Ren W X, Wang N B, et al. Experimental study on seismic pounding response of bridge structures subjected to spatially varying ground motions by shake table test [J]. Earthquake Engineering and Engineering Dynamics(Chinese Edition), 2016, 36(1): 24-34. DOI:10.13197/j.eeev.2016.01.24.helx.004. (in Chinese)
[11] Guo A X, Li Z J, Li H, et al. Experimental and analytical study on pounding reduction of base-isolated highway bridges using MR dampers [J]. Earthquake Engineering & Structural Dynamics, 2009, 38(11): 1307-1333. DOI:10.1002/eqe.903.
[12] Bi K M, Hao H. Numerical simulation of pounding damage to bridge structures under spatially varying ground motions [J]. Engineering structures, 2013, 46: 62-76. DOI:10.1016/j.engstruct.2012.07.012.
[13] Jankowski R, Wilde K, Fujino Y. Pounding of superstructure segments in isolated elevated bridge during earthquakes [J]. Earthquake Engineering & Structural Dynamics, 1998, 27(5): 487-502.DOI:10.1002/(sici)1096-9845(199805)27:5<487::aid-eqe738>3.0.co;2-m.
[14] Bi K M, Hao H. Modelling of shear keys in bridge structures under seismic loads [J]. Soil Dynamics and Earthquake Engineering, 2015, 74: 56-68. DOI:10.1016/j.soildyn.2015.03.013.
[15] Deng Y L, Peng K, Li J Z. Effect of pounding on seismic responses of continuous girder bridges under transverse earthquake [J]. Structural Engineers, 2007, 23(2): 64-68, 79. DOI:10.15935/j.cnki.jggcs.2007.02.014. (in Chinese)
[16] Xu L Q, Li J Z. Design and experimental investigation of a new type sliding retainer and its efficacy in seismic fortification [J]. Engineering Mechanics, 2016, 33(2): 111-118, 199.(in Chinese)
[17] Tian S Z, Jia H X, Lin Y Z. Hybrid simulation of a carbon fibre-reinforced polymer-strengthened continuous reinforced concrete girder bridge [J]. Advances in Structural Engineering, 2017, 20(11): 1658-1670.DOI:10.1177/1369433217691772.
[18] Muthukumar S. A contact element approach with hysteresis damping for the analysis and design of pounding in bridges [D]. Atlanta: School of Civil and Environmental Engineering, Georgia Institute of Technology, 2003.
[19] Silva P F, Megally S, Seible F. Seismic performance of sacrificial exterior shear keys in bridge abutments [J]. Earthquake Spectra, 2009, 25(3): 643-664. DOI:10.1193/1.3155405.
[20] Ministry of Construction of Peopl’s Republic of China. GB 50010—2010 Code for design of concrete structures [S]. Beijing: China Architecture and Building Press, 2010.(in Chinses)
[21] Gorst N, Williamson S, Pallett P, et al. Friction in temporary works [M]. Birmingham: University of Birmingham, 2003.
Memo
- Memo:
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Biographies: Lin Yuanzheng(1990—), male, Ph.D. candidate; Zong Zhouhong(corresponding author), male, doctor, professor, zongzh@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 51678141), the Postgraduate Research & Practice Innovation Program of Jiangsu Province(No. KYCX17_0128), the Fundamental Research Funds for the Central Universities.
Citation: Lin Yuanzheng, Zong Zhouhong, Li Yale, et al. Seismic response analysis of a reinforced concrete continuous bridge considering coupling pounding-friction effect[J].Journal of Southeast University(English Edition), 2018, 34(3):340-348.DOI:10.3969/j.issn.1003-7985.2018.03.009.