Hybrid Steel Frames [N14]

The goal of this research project is to develop a new type of seismic resisting system that utilizes dual systems to provide improved performance over traditional systems. The key to this concept is to design for the development of early minor yielding to dissipate seismic energy and control resonant response, and the residual stiffness is intended limit residual deformation. The first hybrid system being developed is a hybrid buckling restrained braced frame. Hybridity would be provided by use of a series of individual braces using normal or low-strength steel, or by a single hybrid core that uses the different materials in parallel. Another approach to obtain hybridity is to engage partially restrained connections in the gravity frame to yield early in the initial stages of a design level earthquake.

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