ENG  Vol.5 No.1 , January 2013
Experimental Study on the Ultimate Shear Performance of Elastomeric Bearings of Doublefold Elastomeric Layer

The elastomeric bearings shall not fail nor degrade the durability of the bridge due to the loss of its properties during its service life. Since the elastomeric bearings can be used in the seismic design complementarily to seismic devices, even if it is not a seismic isolator, they particularly should secure high shear performance. For elastomeric bearings to behave monolithically, the internal rubber which is located between the steel plates should be single rubber layer. In this study, a series of elastomeric bearings were fabricated and ultimate shear performance was investigated. Some specimens are of single elastomeric layer, the other are of doublefold elastomeric layer. Shear fatigue tests and ultimate shear tests were carried out. Tests results show that the elastomeric bearings whose internal rubber layer is formed by agglomeration of several rubber pads is likely to experience significant loss of its shear performance or early failure.

Cite this paper: H. Yoon, I. Kwahk and Y. Kim, "Experimental Study on the Ultimate Shear Performance of Elastomeric Bearings of Doublefold Elastomeric Layer," Engineering, Vol. 5 No. 1, 2013, pp. 92-96. doi: 10.4236/eng.2013.51014.

[1]   Korea Standards Association, “KS F 4420 Steel-Laminated Elastomeric Bearings for Bridge,” Korea Agency for Technology and Standards, Ministry of Knowledge Economy, Gwacheon, 1998.

[2]   J. V. Muscarella and J. A. Yura, “An Experimental Study of Elastomeric Bridge Bearings with Design Recommendations,” Ph.D. Thesis, University of Texas, Austin, 1995.

[3]   C. Roeder, et al., “Performance of Elastomeric Bearings,” Transportation Research Board, NCHRP Report 298, 1987.

[4]   Japan Road Association, “Bearing Support Design Guide,” Sciencebook, Seoul, 2004.

[5]   Korea Road & Transportation Association, “Korean Highway Bridge Design Code,” Ministry of Construction Transportation, Seoul, 2005.