Abstract
Authors have shown the superiority using the low friction sliding bearing- support (LFSBS) for the continuous girder bridge by the seismic response analysis and shake table test for small steel girder bridge model. This paper inspects the validity of this system by the seismic response analysis for existing three span continuous steel girder bridge with seven different bearing supports conditions. Accelerations, displacements, bending moments and curvatures are calculated and compared each other. It became clear again that in the bridge with LFSBS piers vibrate independently from girder, and curvature at the bottom of the pier becomes very small compared to those of the ordinal existing support type bridge. The effect of damper installed between end of the girder and abutment to reduce the large displacement of the girder is also clarified. The use of the damper has no influence for the response of the pier.
