The control performance of LCVA designed for mitigation of wind-induced motion of Songdo high rise building is evaluated using 1/20 scaled test model. The effectiveness of the LCVA is then examined tuning LCVA to 90%, 100%, and 110% of the natural frequency, 0.74Hz. The test structure is excited using a sinusoidal signal ranging 0.2 ~ 1.2 Hz with 5.5mm displacement, and acceleration and displacement of structure, water height, and shear force are measured. Experimental results indicate that the LCVA tuned to 100% of the natural frequency with orifice opening ratio of zero reduce the peak and RMS displacement up to 67% and 72%.

• 우성식(단국대학교 대학원 건축공학과 박사과정) | Woo, Sung-Sik
• 이상현(단국대학교 건축대학 건축공학과 전임강사, 공학박사) | Lee, Sang-Hyun Corresponding author
• 김홍진(포항산업과학연구원 선임연구원, 공학박사) | Kim, Hong-Jin
• 정란(단국대학교 건축대학 건축공학과 교수, 공학박사) | Chung, Lan
• 최기영(단국대학교 대학원 건축공학과 석사과정) | Choi, Ki-Young