板式橡胶支座摩擦滑移性能试验研究

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摘要为研究地震作用下板式橡胶支座的剪切变形及摩擦滑移特性，对7组无顶底钢板的板式橡胶支座进行了水平循环加载试验，考虑了不同竖向压应力、加载速度及橡胶材料等因素的影响，分析了不同加载阶段的板式橡胶支座变形及受力状态，并讨论了不同影响因素下水平等效刚度、能量耗散等抗震性能参数变化规律。试验结果表明：循环荷载作用下的板式橡胶支座工作状态可分为4个阶段，不同阶段下支座水平力及刚度的变化明显，第Ⅲ阶段中支座接触面处会因显著滑移而发生严重磨损，导致水平承载力及刚度发生下降，水平力下降可达30%，建议在桥梁抗震性能分析及评价时考虑支座翘曲及摩擦磨损导致的力学性能的下降；不同影响因素下，支座滑移后的力学性能会发生不同程度的变化，但其力-位移关系最终逐渐稳定，并表现出稳定的滞回特性，可将板式橡胶支座作为“保险丝式单元”设计。

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	王克海1
	吴刚2
	张盼盼1

关键词 ：板式橡胶支座, 摩擦滑移, 抗震性能, 剪切变形, 试验研究

Abstract：In order to investigate shear deformation and friction sliding characteristics of plate rubber bearings, horizontal cyclic loading tests were conducted for 7 groups of plate rubber bearings without top and bottom steel plates considering effects of vertical compressive stress, loading rate and rubber material to analyze deformations and stress states of plate rubber bearings in different loading stages, and discuss variation laws of aseismic performance parameters, such as, horizontal equivalent stiffness and energy dissipation under different influence factors. Test results showed that working state of plate rubber bearings under action of cyclic loads can be divided into 4 stages, their horizontal bearing forces and stiffness in different stages vary obviously; in the 3rd stage, bearing contact surface is seriously worn due to significant sliding to cause horizontal bearing force and stiffness dropping, horizontal bearing force drops by 30%, so it is necessary to consider their mechanical performance degradation caused by bearing warpage, friction and wear in analysis and evaluation of aseismic performance of bridges; under different influencing factors, bearing mechanical performance after sliding can have different changes, however, finally its force-displacement relation gradually becomes stable to reveal stable hysteretic characteristics, so plate rubber bearings can be designed as a “fuse type unit”.

Key words： plate rubber bearing friction sliding aseismic performance shear deformation test study

收稿日期: 2018-07-23 出版日期: 2020-09-28

引用本文:

王克海1，吴刚2，张盼盼1. 板式橡胶支座摩擦滑移性能试验研究[J]. 振动与冲击, 2020, 39(19): 1-6.
WANG Kehai1, WU Gang2, ZHANG Panpan1. Tests for friction sliding performance of plate rubber bearing. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(19): 1-6.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2020/V39/I19/1

[1] 庄卫林, 陈乐生. 汶川地震公路震害分析-桥梁与隧道[M]. 北京：人民交通出版社, 2013.
Zhuang Weilin, Chen Lesheng. Analysis of Highway’s Damage in the Wenchuan Earthquake-Bridge and Tunnel [M]. Beijing: China Communication Press, 2013.
[2] 王克海, 韦韩, 李茜, 等. 中小跨径公路桥梁抗震设计理念[J].土木工程学报, 2012,45[9]: 115-121.
Wang Kehai, Wei Han, Li Qian, et al. Philosophies on Seismic Design of Highway Bridges of Small or Medium Spans [J]. China Civil Engineering Journal, 2012, 45(9):115-121.
[3] 王克海, 李冲, 李茜, 等. 考虑支座摩擦滑移的中小跨径桥梁抗震设计方法[J]. 工程力学, 2014,31（6）：85-92.
Wang Kehai, Li Chong, Li Qian, et al. Seismic Design Method of Small and Medium Span Bridge Considering Bearing Friction Slipping[J]. Engineering Mechanics, 2014, 31(6):85-92.
[4] 李冲, 王克海, 惠迎新, 等. 考虑摩擦滑移的板式橡胶支座连续梁桥地震反应分析[J]. 中国公路学报, 2016, 29(3):73-81.
Li Chong, Wang Kehai, Hui Yingxin, et al. seismic response of Continuous Girder Bridge with Laminated Rubber Bearing Considering Friction Sliding[J]. China Journal of Highway and Transport, 2016, 29(3):73-81.
[5] Tobias D H, Anderson R E, Hodel C E, et al. Overview of Earthquake Resisting System Design and Retrofit Strategy for Bridges in Illinois[J]. Practical Periodical on Structural Design and Construction, 2008, 13(3):147-158.
[6] McDonald J, Heymsfield E, Avent R R. Slippage of Neoprene Bridge Bearings [J]. Journal of Bridge Engineering, 2000, 5(3): 216-223.
[7] Schrage I. Anchoring of Bearings by Friction[R]. Special Publication SP70-12, American Concrete Institute, Detroit, 1981: 197-215.
[8] ISO 15113 International Standard, Rubber — Determination of Friction Properties[S]. British: British Standard, 2005.
[9] Steelman J S, Fahnestock L A, et al. Shear and Friction Response of Nonseismic Laminated Elastomeric Bridge Bearings Subject to Seismic Demands [J]. Journal of Bridge Engineering, 2013, 18:612-623.
[10] Steelman J S, Fahnestock L A, LaFave J M, et al. Seismic Response of Bearings for Quasi-Isolated Bridges – Testing and Component Modeling[C]//. Proceedings of the ASCE/SEI Structures Congress, Reston, VA, USA, 2011:164-178.
[11] Steelman J S. Sacrificial Bearing Components for Quasi-Isolated Response of Bridges Subject to High-Magnitude, Low-Probability Seismic Hazard[D], Illinois, USA: University of Illinois, 2013.
[12] 李冲, 王克海, 李悦, 等. 板式橡胶支座摩擦滑移抗震性能试验研究[J]. 东南大学学报：自然科学版,2014,44(1):162-167.
Li Chong, Wang Kehai, Li Yue, et al. Experimental Study on Seismic Performance of Laminated Rubber Bearings with Friction Slipping [J]. Journal of Southeast University (Natural Science Edition), 2014, 44(1):162-167.
[13] 张国镇, 卢智宏, 刘光晏. 含功能性支承桥梁位移设计法之研究[R]. 中国台湾：国家地震研究中心，2011.
Kuo-Chun Chang, Chih-Hung Lu, and Kuang-Yen Liu. Displacement-based Design for Highway Bridges with Function Bearing System [R]. Taiwan: National Center for Research on Earthquake Engineering, 2011. (in Chinese)
[14] Konstantinidis D, Kelly J M, Makris N. Experimental investigations on the seismic response of bridge bearings[R].Earthquake Engineering Research Center, Report No. EERC 2008-02,College of Engineering, University of California, Berkeley, CA.
[15] Russo G, Pauletta M. Sliding Instability of Fiber-Reforced Elastomeric Isolators in Unbonded Application[J]. Engineering Structures, 2013, 48(3): 70-80
[16] JT/T4-2004, 公路桥梁板式橡胶支座[S]. 北京：人民交通出版社, 2012.