The University of Massachusetts Amherst
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Seismic response and engineering of cold-formed steel framed buildings

TitleSeismic response and engineering of cold-formed steel framed buildings
Publication TypeJournal Article
Year of Publication2016
AuthorsSchafer BW, Ayhan D., Leng J., Liu P., Padilla-Llano D., Peterman KD, Stehman M., Buonopane SG, Eatherton M., Madsen RL, Manley B., Moen C.D., Nakata N, Rogers C., Yu C.
KeywordsCold-formed steel, earthquake engineering, performance-based design, seismic response

Buildings framed from cold-formed steel members are becoming increasingly common. Significant research has been conducted on individual cold-formed steel members, but little research has been done on full buildings framed from cold-formed steel. In the past, testing on individual shear walls has been used to provide insights and create safe seismic designs for cold-formed steel buildings, but understanding and modeling of whole buildings have been out of reach. As a result, seismic performance-based design has also remained out of reach for cold-formed steel framed buildings. Recently, a North American effort under the abbreviated name: CFS-NEES has begun to address this challenge head on. Major deliverables in the CFS-NEES effort included: shear wall testing, characterization, and modeling; cyclic member testing, characterization, and modeling; and, whole building shake table testing, and modeling. The research provides the necessary building blocks for developing efficient nonlinear time history models of buildings framed from cold-formed steel. In addition, the experiments demonstrate the large difference between idealized engineering models of the seismic force-resisting system and the superior performance of the full building system.