In case of spatial structures with different ground condition or time lag occurred by earthquake velocity, multiple support excitation may be subjected to supports of a keel arch structure. In this study, the response of the keel arch structure under multiple support excitation are analyzed by means of the pseudo excitation method. Pseudo excitation method shows that the structural response is divided into two parts, ground displacement and structural dynamic response due to ground motion excitation. It is known that the seismic responses of spatial structure under multiple support excitation are different from those of spatial structure under unique simple excitation.

• 김기철(서일대학교 건축과 교수, 공학박사) | Kim, Gee Cheol
• 강주원(영남대학교 건축학부, 공학석사) | Kang, Joo Won Corresponding Author
• 석근영(영남대학교 공업기술연구소 연구원, 공학박사) | Seok, Keun Young