Category Archives: Projects

This category is for the various projects, and a complete list of these items will appear on the research page. If you’d like one of these projects to appear on the homepage add it to this category and use the “featured” tag as well.

Controlled Rocking of Steel Braced Frames with Replaceable Energy Dissipating Fuses

Current U.S. building codes and earthquake engineering practice utilize inelasticity in the seismic force resisting system to dissipate seismic energy and protect against collapse.  Inelasticity in conventional structures can lead to structural damage distributed throughout the building and permanent drifts … Continue reading

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Development of a Self-Centering Buckling Restrained Brace

The project led by Larry Fahnestock at the University of Illinois, involves the investigation of the the seismic behavior and performance of self-centering buckling-restrained braces (SC-BRBs). A SC-BRB consists of a typical BRB component, which provides energy dissipation, and pre-tensioned … Continue reading

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Resilient Tunable Steel Plate Shear Walls

Steel plate shear walls have been used in steel buildings for decades even though they were first included in building codes in 2005.  They provide improved performance relative to concentrically braced frames, and also offer a more economical and easier … Continue reading

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Understanding Structural Response During Earthquakes Using Wavelet Transforms

As part of the development of performance based earthquake engineering, it has been determined that an important parameter in conducting a set of response history analyses is record-to-record variability. Record-to-Record Variability (RTR) is defined in FEMA P695 (FEMA 2010) as the variation in response of a structure under multiple input ground motions that are scaled to a consistent ground motion intensity. The ATC 63 methodology summarized in FEMA P695 accounts for RTR variability by the number of ground motions, the types of ground motions, the scaling procedure, and a fixed value for the standard deviation of the lognormal collapse probability distribution used therein. However, the source of RTR variability is not analyzed. Continue reading

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Characterizing Hysteretic Behavior of Cold-Formed Steel Members and Connections

Thin-walled cold-formed steel building systems are becoming an increasingly competitive multi-story construction solution when compared to more traditional hot-rolled steel and timber framing.  However, our understanding of the behavior of cold-formed structures subjected to earthquake loading is lacking.  Although shear … Continue reading

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