圆形板式橡胶支座轴向刚度的研究

英文篇名：Study on the Axial Stiffness of Circular Laminated Rubber Bearing
中文刊名：中国铁道科学
英文刊名：China Railway Science
作者：陈波
英文作者：CHEN Bo(School of Civil Engineering ; Lanzhou Jiaotong University ; Lanzhou Gansu 730070 ; China)
中文关键词：板式橡胶支座 ; 轴向刚度 ; 橡胶层 ; 加劲钢板层 ; 试探位移函数 ; 应变能 ; 变分原理
英文关键词：Laminated rubber bearing ; Axial stiffness ; Rubber layer ; Stiffened steel plate layer ; Trial displacement function ; Strain energy ; Variation principle
出版日期：2012-09-15
机构：兰州交通大学土木工程学院;
年：2012
期：05
出版单位：中国铁道科学

摘要

为解决广泛应用于铁路、公路桥梁以及建筑物的圆形板式橡胶支座轴向刚度计算问题,根据轴向压力作用下圆形板式橡胶支座的压缩变形特征,并考虑橡胶层和加劲钢板层层数和厚度的影响,假定一组满足边界条件的试探位移函数,然后利用变分原理和卡氏第二定律,导出圆形板式橡胶支座的轴向刚度计算公式。利用该公式计算圆形板式橡胶支座轴向刚度时,不受橡胶层和加劲钢板层层数和厚度的限制,并且可忽略加劲钢板轴向变形对支座轴向刚度的影响。通过比较,计算值与实测值的吻合程度较好。
The circular laminated rubber bearing can be widely used in railways,highways,bridges,and buildings.Considering the influence of the layer number and thickness of rubber and stiffened steel plate layers,as well as the compression deformation characteristics of circular laminated rubber bearings under axial pressure,a group of trial displacement functions which satisfy the boundary conditions are assumed for solving the axial stiffness.By using the variation principle and the second Castingliano's theorem,the axial stiffness formula is derived.Using the formula and test methods,the calculated and measured values of axial stiffness are in good agreement.Meanwhile,the layer number and thickness of rubber and stiffened steel plate layers of the laminated rubber bearings are not be limited when using the formula,and the influence of the axial deformation of the stiffened steel plate on axial stiffness can be ignored in the calculation.

引文

[1]LINDLEY P B.Natural Rubber Structural Bearings[J].Joint Sealing and Bearing System for Concrete Structure,1981(1):353-378.
    [2]严慧,董石麟.板式橡胶支座节点的设计与应用研究[J].空间结构,1995,1(2):33-40.(YAN Hui,DONG Shilin.Design and Application Research of Plate Type Rubber Supporting Joint[J].SpatialStructure,1995,1(2):33-40.in Chinese)
    [3]范重,沈银澜,毕磊,等.板式橡胶支座深化设计与试验研究[J].空间结构,2011,17(3):47-54.(FAN Zhong,SHEN Yinlan,BI Lei,et al.Engineering Design and Experimental Study of Laminated Rubber Bear-ings[J].Spatial Structures,2011,17(3):47-54.in Chinese)
    [4]郑志鸥,郑世瀛.新型抗横移桥梁板式橡胶支座[J].西南交通大学学报,2000,35(4):357-360.(ZHENG Zhiou,ZHENG Shiying.A New Type of Bridge Plate Support Resistant to Lateral Displacement[J].Journal of Southwest Jiaotong University,2000,35(4):357-360.in Chinese)
    [5]张华,彭天波,李建中,等.FRP橡胶支座压缩性能分析[J].地震工程与工程振动,2011,31(3):154-160.(ZHANG Hua,PENG Tianbo,LI Jianzhong,et al.Study on Compression Performance of FRP Rubber Bearing[J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(3):154-160.in Chinese)
    [6]中华人民共和国交通部.JTG D62—2004公路钢筋混凝土及预应力钢筋混凝土桥涵设计规范[S].北京:人民交通出版社,2005.
    [7]铁摩辛柯S P,古地尔J N.弹性理论[M].徐芝纶,译.北京:高等教育出版社,1990.