The Kiewit Center for Infrastructure and Transportation Numerical analysis of steel moment resisting frames under mainshock- aftershock seismic sequences by Filipe L.A. Ribeiro Andre R. Barbosa Luis C. Neves Kiewit - 2012/07 Final Report Submitted to Oregon State University - ISFS July 2012 The Kiewit Center for Infrastructure and Transportation Oregon State University 111 Kearney Hall Corvallis, OR 97331 cce.oregonstate.edu