Title: EARTHQUAKE RESPONSE CHARACTERISTICS OF BUILDINGS WITH SETBACK
Abstract: Applying an earthquake response evaluation method of buildings proposed by the authors, which uses the equivalent SDOF system responses and the higher mode responses obtained from both the time history earthquake response analysis and the modal adaptive pushover (MAP) analysis, the earthquake response characteristics of RC buildings with setback were investigated. Analyzed were four twelve-story RC buildings with different setback layouts. The results indicate that translation responses are more dominant than torsional responses for buildings with setback in the upper story, while torsional responses tend to be prominent for buildings with setback in the lower story. It is also clarified that torsional responses are extremely increased at a story right under the setback story, and the torsional responses include a lot of higher mode components.