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《Journal of Guangzhou University(Natural Science Edition)》 2011-03
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Research on lead rubber bearing in horizontal two-dimensional loading test

LI Zhen,LI Xiang-zhen,XIANG Wei-ming,ZHU Xiao-wen (School of Civil Engineering,Guangzhou University,Guangzhou 510006,China)  
Under the translation-torsion coupling earthquake action,translation and torsion motion of corresponding isolation layer occurs,and lead rubber bearing is under two-dimensional shear.This paper designs a two-dimensional strength device,which could test 100 mm lead rubber bearing under two-dimensional shear.Translation and torsion motion of corresponding isolation layer also occurs.Through two decorate conditions,LRB under low cycle fatigue loading of two horizontal proportion is tested.The relation between torque of LRB100 and deflection angle of isolation layer and hysteresis curve of axis Y are got.Test results show that horizontal stiffness of axis Y,torsion stiffness,horizontal damping ratio of axis Y and torsion damping ratio are reduced compared with the unidirectional compressive shear test.The two-dimensional strength device designed in this paper can test LRB100 under two-dimensional shear.
【CateGory Index】: TU352.12
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