A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental Evaluation of Seismic Performance of Bridge Restrainers
The overall objective of this task was to conduct shake table tests to evaluate the seismic performance of bridges that have been retrofitted with hinge restrainers between simply supported adjacent spans. This experimental study investigates the impact between adjacent bridge spans at in-span hinges, evaluates the efficacy of restrainers in reducing relative displacement across the hinges and examines the effects of restrainer stiffness and gap on the response of the hinge-restrainer system. Experimental results indicated that impacts between the adjacent frameworks produce acceleration levels significantly higher than what is typically assumed in design. Restrainers were capable of reducing hinge relative displacements and preventing span unseating. However, restrainer yielding occurred under strong input motions, especially when the restrainer gap was set to zero. Only pounding at the hinge locations was included in this study, while pounding elsewhere in the superstructure as well as the detailed response behavior of substructure elements were neglected.
Experimental Evaluation of Seismic Performance of Bridge Restrainers
The overall objective of this task was to conduct shake table tests to evaluate the seismic performance of bridges that have been retrofitted with hinge restrainers between simply supported adjacent spans. This experimental study investigates the impact between adjacent bridge spans at in-span hinges, evaluates the efficacy of restrainers in reducing relative displacement across the hinges and examines the effects of restrainer stiffness and gap on the response of the hinge-restrainer system. Experimental results indicated that impacts between the adjacent frameworks produce acceleration levels significantly higher than what is typically assumed in design. Restrainers were capable of reducing hinge relative displacements and preventing span unseating. However, restrainer yielding occurred under strong input motions, especially when the restrainer gap was set to zero. Only pounding at the hinge locations was included in this study, while pounding elsewhere in the superstructure as well as the detailed response behavior of substructure elements were neglected.
Experimental Evaluation of Seismic Performance of Bridge Restrainers
A. G. Vlassis (author) / E. M. Maragakis (author) / M. Saiid Saiidi (author)
2000
166 pages
Report
No indication
English
Seismic Performance of Bridge Restrainers at Intermediate Hinges
| British Library Conference Proceedings | 2001
Experimental Evaluation of Longitudinal Seismic Performance of Bridge Restrainers at In-Span Hinges
| British Library Online Contents | 2004
| British Library Conference Proceedings | 1996
Fracture Analysis of Seismic Bridge Restrainers under Impact Loads
| British Library Conference Proceedings | 1997
Evaluation of the Seismic Response of Bridges with Hinge Restrainers
| British Library Conference Proceedings | 1994