Tributary area based-lumped mass model is a simplified modeling technique and it is popularly adopted in earthquake engineering for the evaluation of seismic performance of structures. However, the technique provides somewhat less accuracy due to its different frequencies and mode shapes, compared to the detailed FE model. For the basic understanding this study investigates the sensitivity of the lumped mass locations on the mode shapes and modal participation factors, considering a cantilever typed column structure.

• 선휘창(전북대학교, 토목공학과) | Sun, Hwichang
• 노화성(전북대학교, 토목공학과) | Roh, Hwasung 교신저자