直接基于位移的非规则减隔震桥梁抗震设计

摘要
图/表
参考文献(27)
相关文章 (15)

全文: PDF (1822 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要根据基于性能抗震设计的思想，提出一种高低墩减隔震桥梁直接基于位移的抗震设计方法，该方法可设计各桥墩配筋率及支座参数，使纵桥向地震作用下各墩保持弹性、各支座达到相同的损伤状态，并实现地震剪力或墩底弯矩的均匀分配。以某工程背景桥梁为例进行直接基于位移的设计，并建立有限元模型进行非线性时程分析，比较两者结果，验证所提方法的有效性。此外，对比了剪力均匀和墩底弯矩均匀这两种地震力分配方式下桥梁的地震响应。对于各墩采用相同截面尺寸和配筋的减隔震桥梁，按照本文方法进行设计时，推荐采用墩底弯矩均匀的地震力分配方式，该分配方式能更好的发挥材料性能、节约工程造价，但同时应保证墩高较低的桥墩有足够的抗剪能力。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	武少威1
	项敬辉2
	李建中1
	陈旭1

关键词 ：桥梁工程, 非规则桥梁, 减隔震桥梁, 基于位移的设计, 基于性能的设计

Abstract：A direct displacement-based design procedure for isolated bridges with irregularity in height is proposed, which can be incorporated into a performance-based design philosophy. This method can be used to determine the reinforcement ratios of piers and the properties of bearings. Under longitudinal seismic motions, all piers can perform elastically, and all bearings can achieve the same damage state. Furthermore, a uniform distribution of shear forces or base bending moments among all piers can be achieved. An example bridge is designed using this method, and the finite element model of the bridge is established to perform nonlinear time history analysis. The comparison of design results and time history analysis results shows the effectiveness of this method. In addition, the seismic response of the bridge designed by this method under two seismic force distribution modes (i.e., uniform shear force and uniform base bending moment) is compared. The result shows that for the bridge with the same section size and reinforcement at each pier, the uniform distribution of base bending moment is recommended. This distribution mode can optimize the use of materials and reduce construction costs, but special attention should be paid to the shear capacity check of short piers.

Key words： bridge engineering irregular bridge isolated bridge displacement-based seismic design performance-based seismic design

收稿日期: 2023-02-20 出版日期: 2024-02-15

引用本文:

武少威1，项敬辉2，李建中1，陈旭1. 直接基于位移的非规则减隔震桥梁抗震设计[J]. 振动与冲击, 2024, 43(3): 128-135.
WU Shaowei1, XIANG Jinghui2, LI Jianzhong1, CHEN Xu1. Aseismic design of irregular seismic reduction and isolation bridge directly based on displacement. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(3): 128-135.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2024/V43/I3/128

[1] 魏标. 典型非规则梁桥抗震设计理论 [D]; 同济大学, 2010. WEI Biao. Seismic design theory of typical irregular continuous bridges[D]. Shanghai: Tongji University, 2010. [2] PRIESTLEY MJN, SEIBLE F, CALVI GM. Seismic Design and Retrofit of Bridges [M]. New York: John Wiley & Sons, 1996. [3] AKBARI Reza. Cyclic response of RC continuous span bridges with irregular configuration in longitudinal direction [J]. Structure and Infrastructure Engineering, 2010: 1-11. [4] 中华人民共和国交通运输部. 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 Transport of the People's Republic of China. JTG/T 2231-01-2020 Specifications For Seismic Design Of Highway Bridges[S]. Beijing: China Communications Press, 2020. [5] AASHTO. AASHTO Guide Specifications for LRFD Seismic Bridge Design: [S]. Washington: American Association of State Highway and Transportation Officials, 2011: [6] CEN. Design of structures for earthquake resistance. Part 2: Bridges: [S]. Brussels, Belgium: CEN, 2005: [7] GUIRGUIS J. E. B., MEHANNY S. S. F. Evaluating Code Criteria for Regular Seismic Behavior of Continuous Concrete Box Girder Bridges with Unequal Height Piers [J]. Journal of Bridge Engineering, 2013, 18(6): 486-98. [8] ISHAC MG, MEHANNY SSF. Do mixed pier-to-deck connections alleviate irregularity of seismic response of bridges with unequal height piers? [J]. Bulletin of Earthquake Engineering, 2016, 15(1): 97-121. [9] 魏标, 崔睿博, 戴公连, et al. 橡胶支座对非规则连续梁桥地震反应的影响 [J]. 中国公路学报, 2013, 26(06): 110-7. WEI Biao, CUI Ruibo, DAI Gonglian, et al. Impact of laminated rubber bearings on seismic response of irregular continuous bridges[J]. China Journal of Highway and Transport, 2013, 26(06): 110-7. [10] XIANG Nailiang, LI Jianzhong. Utilizing yielding steel dampers to mitigate transverse seismic irregularity of a multispan continuous bridge with unequal height piers [J]. Engineering Structures, 2020, 205. [11] JARA José M., VILLANUEVA Dorian, JARA Manuel, et al. Isolation parameters for improving the seismic performance of irregular bridges [J]. Bulletin of Earthquake Engineering, 2012, 11(2): 663-86. [12] 李建中, 管仲国. 基于性能桥梁抗震设计理论发展 [J]. 工程力学, 2011, 28(Sup.II): 24-30,53. Li Jianzhong, Guan Zhongguo. Performance-based seismic design for bridges[J]. Engineering Mechanics,2011,28(S2):24-30+53. [13] KOWALSKY Mervyn J., PRIESTLEY M. J. Nigel, MACRAE Gregory A. Displacement-based design of RC bridge columns in seismic regions [J]. Earthquake Engineering & Structural Dynamics, 1995, 24(12): 1623-43. [14] KOWALSKY Mervyn J. A displacement-based approach for the seismic design of continuous concrete bridges [J]. Earthquake Engineering & Structural Dynamics, 2002, 31(3): 719-47. [15] HAN Qiang, WEN Jianian, DU Xiuli, et al. Simplified seismic resistant design of base isolated single pylon cable-stayed bridge [J]. Bulletin of Earthquake Engineering, 2018, 16(10): 5041-59. [16] DENG Lijun, KUTTER Bruce L., KUNNATH Sashi K. Seismic Design of Rocking Shallow Foundations: Displacement-Based Methodology [J]. Journal of Bridge Engineering, 2014, 19(11). [17] 王军文, 张伟光, 李建中. 摇摆式预应力混凝土桥墩基于位移的抗震设计方法研究 [J]. 振动与冲击, 2014, 33(24): 106-11. Wang Junwen, Zhang Weiguang, Lijianzhong. Displacement-based aseismic design method for rocking bridge piers with posttensioned tendons[J]. Journal of Vibration and Shock, 2014, 33(24): 106-11. [18] XIANG Nailiang, ALAM M. Shahria. Displacement-based seismic design of bridge bents retrofitted with various bracing devices and their seismic fragility assessment under near-fault and far-field ground motions [J]. Soil Dynamics and Earthquake Engineering, 2019, 119: 75-90. [19] CARDONE D., DOLCE M., PALERMO G. Direct displacement-based design of seismically isolated bridges [J]. Bulletin of Earthquake Engineering, 2008, 7(2): 391-410. [20] FURINGHETTI Marco, PAVESE Alberto. Definition of a Simplified Design Procedure of Seismic Isolation Systems for Bridges [J]. Structural Engineering International, 2020, 30(3): 381-6. [21] RASOULI Mahsa, SHIRAVAND Mahmoud R., RASTI ARDAKANI Reza. Performance‐based design method for isolated hollow RC piers with irregularity in height [J]. Structural Concrete, 2022. [22] 中华人民共和国交通运输部. JT/T822-2011 公路桥梁铅芯隔震橡胶支座: [S]. 北京: 人民交通出版社, 2011: Ministry of Transport of the People's Republic of China. JT/T822-2011 Lead rubber bearing isolator for highway bridge[S]. Beijing: China Communications Press, 2011. [23] ZHANG Jian, HUO Yili. Evaluating effectiveness and optimum design of isolation devices for highway bridges using the fragility function method [J]. Engineering Structures, 2009, 31(8): 1648-60. [24] HWANG J. S., CHIOU J. M. An equivalent linear model of lead-rubber seismic isolation bearings [J]. Engineering Structures, 1996, 18(7): 528-36. [25] JARA J. M., RAYA G., OLMOS B. A., et al. Applicability of equivalent linearization methods to irregular isolated bridges [J]. Engineering Structures, 2017, 141: 495-511. [26] MAZZONI S, MCKENNA F, SCOTT M H, et al. Open system for earthquake engineering simulation (OpenSees): OpenSees command language manual [M]. Berkeley: Pacific Earthquake Engineering Center, University of California, 2007. [27] GASPARINI D. Vanmarcke E H. SIMQKE: Gram for artificial motion generation [D]. Cambridge; Massachusetts Institute of Technology, 1976.