This study is to evaluate the seismic demand of reinforced concrete structure considering the incident angle of the ground motions. For this purpose, a three-story structure is numerically analyzed under the three ground motion records through a multi-component incremental dynamic analysis (MIDA). The MIDA, an implementation of Incremental dynamic analysis, investigates two components of seismic excitation in which all accelerations are scaled to spectral accelerations at the fundamental natural periods of the buildings. The obtained results indicate the influence of the incident angle should be considered in the assessment response of structures. Maximum inter-story drift of structure will behave in the elastic or inelastic range depending on the variable incident angle

• 김두기(군산대학교 토목공학과 교수) | Dookie Kim Corresponding author
• 박준희(군산대학교 토목공학과, 석사과정) | Junhee Park
• 뉴엔 티 흐엉(군산대학교 토목공학과, 석사과정) | Thi-Huong Nguyen
• 레 민 르엉(군산대학교 토목공학과, 석사과정) | Minh-Luong Le
• 트란 탄 투안(군산대학교 토목공학과, 박사과정) | Thanh-Tuan Tran