Rocking, Fusing, Self-Centering, and Multi-Hazard: Some Research and some Questions

Date: November 29, 2010

Dr. Michel Bruneau, Ph.D., P.Eng., Professor, Department of Civil, Structural and Environmental Engineering, University at Buffalo

Strategies to achieve more resilient structural systems have included frame rocking, the use of structural fuses, and self-centering post-tensioned frames. An increased interest in multi-hazard strategies has also emerged in recent years. This presentation reviewed selected recent research conducted at the University at Buffalo on those topics. This includes: (1) a general formulation for structural fuse systems, validate by shake-table testing of a 3-story steel frame having replaceable fuses; (2) A fuse concept for tall dual columns, verified experimentally using cyclic inelastic testing of a 30′ tall specimen; (3) A structural braced-frame rocking strategy, verified using shake table testing of a 30′ tall 4-legged braced tower; (4) A self-centering steel plate shear wall concept under development, and; (5) A composite concrete-filled steel tube concept for multi-hazard performance. For each of these systems, potential advantages are highlighted, along with some general challenges for that will be faced for their codification.

This public seminar was hosted by the Department of Civil Engineering, University of British Columbia.

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