板式橡胶支座滑动摩擦性能试验及其力学模型
CSTR:
作者:
作者单位:

同济大学 土木工程防灾国家重点实验室,同济大学桥梁工程系,同济大学 土木工程防灾国家重点实验室

中图分类号:

U442.5+5

基金项目:

国家“九七三”重点基础研究发展计划(2013CB036302);国家自然科学基金项目(51278371);交通运输部建设科技项目(2013318800020)


Experimental Study on Sliding Friction Behavior of Laminated Rubber Bearing and Its Mechanical Model
Author:
  • 摘要
  • | |
  • 访问统计
  • |
  • 参考文献 [25]
  • |
  • 相似文献 [20]
  • |
  • 引证文献
  • | |
  • 文章评论
    摘要:

    针对汶川地震中小跨度梁桥出现的板式橡胶支座滑动的典型震害,对板式支座与钢板间的滑动摩擦性能进行了试验研究,分析了竖向正压力和滑动速率对支座滑动摩擦性能的影响规律,试验结果表明,在发生明显滑动之前,支座以水平剪切变形为主,伴随少量的相对滑动,其名义剪切模量在700~1 100 kPa之间;板式支座与钢板间的滑动摩擦系数与支座的竖向压应力呈负相关,与滑动速率呈正相关.最后建立了考虑板式支座与钢板间滑动摩擦性能的精细化力学模型,以考虑多种因素对支座滑动效应的影响.

    Abstract:

    Based on the typical damage of laminated rubber bearing sliding for small to mediumspan girder bridges during the Wenchuan Earthquake, experimental study on the sliding frictional behavior between bearing and steel plate was carried out. Effects of vertical stress and sliding velocity on the bearing sliding behavior were investigated. Results showed that the bearing displayed an approximately linear elastic shear response before sliding. The nominal shear modulus of the bearing ranged between 700 and 1 100 kPa. The coefficient of sliding friction at bearingsteel plate interface was negatively related to the vertical stress, and positively related to the sliding velocity. A mechanical model of the sliding behavior between laminated rubber bearing and steel plate was then developed, considering the effect of various parameters.

    参考文献
    [1] 胡兆同, 陈万春. 桥梁通用构造及简支梁桥[M]. 北京:人民交通出版社, 2001.
    HU Zhaotong, CHEN Wanchun. General Bridge Structures
    and Simply-supported Girder Bridges[M]. Beijing: China
    Communications Press, 2001.
    [2] 陈乐生, 庄卫林. 汶川地震公路震害调查-桥梁[M]. 北
    京: 人民交通出版社, 2012
    CHEN Lesheng, ZHUANG Weilin. Reports on Highways’
    Damage in Wenchuan Earthquake-Bridge[M]. Beijing:
    China Communications Press, 2012.
    [3] LI Jianzhong, PENG Tianbo, XU Yan. Damage Investigation of Girder Bridges under the Wenchuan Earthquake and Corresponding Seismic Design Recommendations[J]. Earthquake Engineering and Engineering Vibration, 2008, 7(4): 337-344.
    [4] 黄小国. 连续梁桥防落梁装置试验和理论研究[D]. 上海: 济大学, 2009.
    HUANG Xiaoguo. Experimental and Theoretical Research
    on Unseating-Prevention Device for Continuous Bridge[D].
    Shanghai: Tongji University, 2009.
    [5] 方圆. 汶川地震典型简支梁桥震害分析及横向限位装置
    研究[D]. 上海: 同济大学, 2012.
    FANG Yuan. Research on Typical Damage of Simple Supported Beam Bridge during Wenchuan Earthquake and Transverse Restraint Device[D]. Shanghai: Tongji University, 2012.
    [6] STEELMAN J S, FAHNESTOCK L A, FILIPOV E T, et al. Shear and Friction Response of Nonseismic Laminated Elastomeric Bridge Bearings Subject to Seismic Demands[J]. Journal of Bridge Engineering, 2012, 18(7): 612-623.
    [7] JT/T 663-2006, 公路桥梁板式橡胶支座规格系列[S].
    JT/T 663-2006. Series of Elastomeric pad bearings for highway bridges[S].
    [8] AASHTO M251-06. Standard specification for plain and laminated elastomeric bridge bearings[S].
    [9] JT/T 4-2004. 公路桥梁板式橡胶支座[S].
    JT/T 663-2006. Plate type elastomeric pad bearings for highway bridges[S].
    [10] BOWDEN F.P., TABOR D. The Friction and Lubrication of Solids – Part II[M]. London: Oxford University Press, 1964.
    [11] CONSTANTINOU M.C., MOKHA A., REINHORN A. Teflon Bearings in Base Isolation. II: Modeling. Journal of Structure Engineering, 1990, 116(2): 455-474.
    网友评论
    网友评论
    分享到微博
    发 布
引用本文

项乃亮,崔侠侠,李建中.板式橡胶支座滑动摩擦性能试验及其力学模型[J].同济大学学报(自然科学版),2016,44(12):1828~1834

复制
分享
文章指标
  • 点击次数:1884
  • 下载次数: 1052
  • HTML阅读次数: 62
  • 引用次数: 0
历史
  • 收稿日期:2016-02-19
  • 最后修改日期:2016-10-31
  • 录用日期:2016-09-26
  • 在线发布日期: 2017-01-10
文章二维码