Ranking the damage potential of input ground motions for typical railway beam bridge

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (11) : 14-21.

HU Jinjun1, FAN Yuan2， LAI Qinghui1， XIE Lili1

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Abstract

Research purposes：Selection of input ground motion is critical in seismic analysis of bridges. The concept of “the most unfavorable design ground motion” has been widely used in building structures. This paper extends this concept to the field of bridges to study the sequence of structural responses of bridges under ground motion excitation. In this paper, different ways of measuring input ground motion and the damage index are introduced. The OpenSees finite element analysis is used to input a large number of ground motion records into the pier model. The relationship between amplitude and single parameter is studied by means of strip method. The relationship between amplitude and multi-parameter is studied by introducing color mapping theory.
Research conclusions：(1) When the lower amplitude ground motion occurs, the results are obtained. The correlation between the seismic response and the response spectrum of the first period is the best when applied to the structure; (2) with the increase of the amplitude, the period of the structure increases, the correlation between the seismic response and the response spectrum of the longer period, as well as the velocity, displacement and duration parameters will gradually increase; (3) the displacement of the pier top was compared through the dynamic time history calculation. Comparing with this model, the records of the model under the peak ground motion are given. For structure similar to the model in this paper, the records can be used as the input design ground motion.

Key words

Railway beam bridge / the most unfavorable design ground motion / input ground motions / seismic response / ranking

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HU Jinjun1, FAN Yuan2， LAI Qinghui1， XIE Lili1. Ranking the damage potential of input ground motions for typical railway beam bridge[J]. Journal of Vibration and Shock, 2020, 39(11): 14-21

References

[1] 周艳, 张雷明, 刘西拉. 美国Cypress高架桥地震倒塌的仿真分析[J]. 岩石力学与工程学报, 2005, 24(17): 3035-3044.
         Zhou Yan，Zhang Leiming，LIU Xila. Collapse Simulation and Analysis of Cypress Viaduct During Loma Prieta Earthquake [J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(17): 3035-3044.
[2] Moehle J, Fenves G, Mayes R, et al. Highway Bridges and Traffic Management[J]. Earthquake Spectra, 1995, 11(Suppl 2): 287-372.
[3] 樊圆. 基于典型桥梁结构的地震动破坏强度排序研究[D]. 中国地震局工程力学研究所, 2018.
    Fan Yuan.Study on the Damage Potential Ordering of Design Ground Motion Based on Typical Bridge Structures [D].Institute of Engineering Mechanics，China Earthquake Administration,2018.
[4] 曲哲, 叶列平, 潘鹏. 建筑结构弹塑性时程分析中地震动记录选取方法的比较研究[J]. 土木工程学报, 2011（7）:10-21.
[5] 谢礼立, 翟长海. 最不利设计地震动研究[J]. 地震学报, 2003, 25(3): 250-261.
    Xie Lili, Zhang Changhai. The Most Unfavourable Real Seismic Design Ground Motions [J]. Earthquake Science, 2003, 25(3): 250-261.
[6] Zhai C H, Xie L L. A New Approach of Selecting Real Input Ground Motions for Seismic Design: The Most Unfavourable Real Seismic Design Ground Motions[J]. Earthquake Engineering & Structural Dynamics, 2007, 36（8）:1009-1027.
[7] Luco N,Cornell CA.Structure-specific scalar intensity measures for near-source and ordinary earthquake motions. Earthquake Spectra 2007;23(2):357–95.
[8] Kazantzi AK, Vamvatsikos D. Intensity measure selection for vulnerability studies of building classes. Earthquake Engineering & Structural Dynamics 2015;44:2677–94.
[9] Tsantaki S, Adam C, Ibarra LF. Intensity measures that reduce collapse capacity dispersion of P-delta vulnerable simple systems. Bulletin of Earthquake Engineering 2017;15:1085–109.
[10] Padgett J E, Nielson B G, Desroches R. Selection of Optimal Intensity Measures in Probabilistic Seismic Demand Models of Highway Bridge Portfolios[J]. Earthquake Engineering & Structural Dynamics, 2010, 37(5):711-725.
[11] 叶列平, 马千里, 缪志伟. 结构抗震分析用地震动强度指标的研究[J]. 地震工程与工程振动, 2009, 29（4）:9-22.
[12] 范峰, 钱宏亮, 谢礼立. 最不利地震动在网壳结构抗震设计中的应用[J]. 世界地震工程, 2003, 19(3): 17-21.
    Fan Feng, Qian Hongliang, Xie Lili.Application of the Most Unfavorable Earthquake Motion in the Seismic Design of Reticulated Shell Structures [J].World Earthquake Engineering, 2003, 19(3): 17-21.
[13] 徐超, 耿飞, 温增平. 基于弹塑性谱位移的钢筋混凝土框架概率地震需求分析[J]. 振动与冲击, 2018(16):162-171.
[14] 郝敏, 谢礼立. 地震动潜在破坏矩阵研究[J]. 清华大学学报(自然科学版), 2008, 48(3): 321-324.
     Hao Min, Xie Lili. Damage Potential Matrix for the Effect of Earthquake Ground Motion [J].Journal of Tsinghua University (Natural Science Edition), 2008, 48(3): 321-324.
[15] 胡进军, 吴旺成, 谢礼立. 地震动累积绝对速度相关参数研究进展与分析[J]. 地震工程与工程振动, 2013, 33(5): 1-8.
Hu Jinjun, Wu Wangcheng, Xie Lili. Research Progress and Analysis of Accumulated Absolute Velocity Related Parameters of Ground Motion [J]. Earthquake Engineering and Engineering Vibration, 2013, 33(5): 1-8.
[16] 李爽, 谢礼立, 郝敏. 地震动参数及结构整体破坏相关性研究[J]. 哈尔滨工业大学学报, 2007, 39(4): 505-509.
Li Shuang, Xie Lili, HaoMin. Study on correlation between earthquake motion parameters and structural damage [J]. Journal of Harbin Institute of Technology,, 2007, 39(4): 505-509.
[17] 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.
[18] 中华人民共和国铁道部. 铁路工程抗震设计规范[M]. 中国计划出版社, 1989.
[19] 樊圆, 胡进军, 谢礼立. 国外强震动数据库及其特点分析[J]. 国际地震动态, 2018(1): 21-29.
    Fan Yuan, Hu Jinjun, XIE Lili. Introduction and Characteristic Analysis of Strong Motion Database in Foreign Countries, Recent Developments in World Seismology, 2018(1) : 21-29.
[20] Bozorgnia Y, Abrahamson N A, Atik L A, et al. NGA-West2 research project[J]. Earthquake Spectra, 2014, 131(2-3): 409-444.