An efficient model for three-dimensional analysis of mu1tistory structures with f1exible f1∞r diaphragms ís proposed in this paper. Three- dimensional analysis of a building structure using a finite element model req버res t려ious input data preparatíon, longer computatíon time, 없1d 녀rger computer memory. The mAn efficient model for three-dimensional analysis of multistory structures with flexible floor diaphragms is proposed in this paper. Three-dimensional analysis of a building structure using a finite element model requires tedious input data preparation, longer computation time, and larger computer memory. The model proposed in this study is developed by assembling a series of two-dimensional resisting systems and is considered to overcome the shortcomings of a three- dimensional finite element model without deteriorating the ao::uracy of analysil:i rel:iultl:i. Static and dynamic analysis results obtained using the proposed model are in exceUent agreement with those obtained using tltree-dimensional finite element models in terms of displacements, periods, and mode shapes. Effects of floor diaphragm flexibility on seismic response of multistory building structures are investigated.여el proposed in thís study ís develop:영 by assemb피19 a series of two-dím앙lSíonal rl없S피19 systems and is considered to over，∞me the shortcomings of a three - dimensional finite element model without deteríorating the accuracy of ar녕lysís resu1ts. Static and dynamic analysis res버ts obtained using the proposed m여el are in excellent agreement wíth those obtaint최 using three - dimensional finite element models in terms of displaæments, periods, and m여e 삶1a야~. Effects of fl∞r 마aphragm f1exibility on seismic response of mu1tistory b띠lding structures are investigated.

• Dong-Guen Lee(한국과학기술원 토목공학과)
• Sung-Kwon Moon(한국과학기술원 토목공학과)