Experimental Study on the Temperature Dependency of Full Scale Low Hardness Lead Rubber Bearing

Full-scale 저경도 납면진받침의 온도의존성에 대한 실험적 연구

  • Received : 2012.11.09
  • Accepted : 2012.11.28
  • Published : 2012.12.31


Rubber laminated bearings with lead core are highly affected by changes in temperature because key materials which are rubber and lead have temperature dependencies. In this study, two full scale LRB(D800, S=5) are manufactured and temperature dependency tests on shear properties are accomplished. The shear properties at the 3rd cycle are used at $-10^{\circ}C$, $0^{\circ}C$, $10^{\circ}C$, $20^{\circ}C$, $30^{\circ}C$, $40^{\circ}C$ respectively. The double shear configuration, simultaneously testing two pieces, is applied for compression shear test in order to minimize the friction effects due to the test machine, described in ISO 22762-1:2010. Characteristic strength, post-yield stiffness, effective stiffness, equivalent damping ratio are estimated and presented coefficient due to the temperature changes.


lead rubber bearing;temperature dependency;low hardness rubber;nuclear power plants


  1. Cho, C.B., Kwahk, I.J., Kim, Y.J. (2008) An Experimental Study for the Shear Property and the Temperature Dependency of Seismic Isolation Bearings, Journal of the Earthquake Engineering Society of Korea, 12(1), pp. 67-77.
  2. Lee, D.H., Hwang, I.S. (2011) Analysis on the Dynamic Characteristics of a Rubber Mount Considering Temperature and Material Uncertainties, Computational Structural Engineering, 24(4), pp.383-389.
  3. Chung, G.Y., Ha, D.H., Park, K.N., Kwon, H.O. (2002) Experimental Study on Characteristics of Low Hardness Rubber Bearing, KSCE Journal of Civil Engineering, 22(6), pp.1295-1307.
  4. ISO 22762-1 (2010) Elastomeric seismicprotection isolators, Part 1:Test methods.
  5. ISO 22762-3 (2010) Elastomeric seismicprotection isolators, Part 3:Applications for buildings Specifications.
  6. JSSI (2009) 免震部材標準品リスト, 日本免震構造協会.
  7. Kelly, J.M., Konstantinidis, D.A. (2011) Mechanics of Rubber Bearings for Seismic and Vibration Isolation.
  8. Komodromos, P. (2000) Seismic Isolation for Earth-Quake Resistant Structures.
  9. Kulak, R.F., Hughes, T.H. (1993) Frequency and Temperature Dependence of High Damping Elastomers, SMiRT-12, pp.243-248.
  10. Roeder, C.W., Stanton, J.F., Feller, T. (1990) Low-Temperature Performance of Elastomeric Bearings, Journal of Cold Regions Engineering, 4(3), pp.161-201.
  11. Skinner, R.I., Robinson, W.H., McVerry, G.H. (1992) An Introduction to seismic isolation.
  12. Yakut, A., Yura, J.A. (2002) Parameters Influencing Performance of Elastomeric Bearings at Low Temperatures, Journal of Structural Engineering, 128(8), pp.986-994.


Supported by : 한국에너지기술평가원(KETEP)