Mechanical Characterization of Lead-Rubber Bearing by Horizontal Shear Tests

수평 전단시험에 의한 납 삽입 적층고무베어링의 기계적 특성 평가

  • 전영선 (한국원자력연구소, 책임기술원) ;
  • 최인길 (한국원자력연구소) ;
  • 유문식 ((주)케이알 기술연구소)
  • Published : 2001.12.01


In this study, the horizontal loading tests of 10ton and 200ton capacity of LRB(lead-rubber bearing) were performed for the evaluation of the dynamic properties of the LRB. It is noted from the test results that dynamic properties of the LRB are dependent on the loading frequency, vertical load and shear strain. A Slender bearing subjected to large deformation will tend to develop plastic hinges in the end regions of the lead plug which will cause the failure of the lead plug. It is recommended that the appropriate mechanical properties of LRB considering the level of structural response and input ground motion should be used in the design of base isolated structures.


seismic isolation device;lead-rubber bearing;mechanical properties;shear test


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