ICSS(4): A DESIGN APPLIED FOR A SUPER LONG MULTI-SPAN BRIDGE

SUMMARY The Isolation Seismic Controlled Slide System (ICSS) is a newly proposed structural system for multis pan continuous girder bridges. The ICSS consists of slide bearings, elastomeric bearings and energy dissipation devices. In order to apply the ICSS to a multispan continuous bridge, it is important to understand the characteristics of slide bearings, elastomeric bearings and energy dissipation devices and to establish reliable numerical models. Application of the ICSS to an 18 � span continuous steel girder bridge is investigated in this study. The superstructure is steel plate girder (2� I section girders + 1�box section girder) and the s ubstructures (P1 to P17) are concrete piers. Slide bearings were installed at both abutments and intermediate piers except for two middle ones (P9 and P10). Furthermore, elastomeric bearings and energy dissipation devices were installed at two designated strong piers supporting the centre span of the bridge.