In this study, the non-linear seismic response analysis of the 2F piloti type building model with varying stiffness and strength distribution between soft-weak story(1F) and upper story(2F). The standard model, whose stiffness and strength ratio of the first story is 10% and 100% comparing the upper story respectively, suffered from shear failure of the core wall on the first story. Otherwise, the models with decreased stiffness or strength ratio of the first story damaged more than the standard model and the lack of the strength was more impactful. The model with improved strength contributed to reduce damage on the first story, while the improved stiffness only was not effective on the reduction of the damage level. Overall, in case that the strength and stiffness ratio of the first story increased, damage distributed in balance along the story.

• 백은림(부산대학교 지진방재연구센터 선임연구원, 공학박사) | Baek, Eun Rim
• 이상호(부산대학교 건축공학과 교수, 공학박사) | Lee, Sang Ho