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Proceedings Paper

Tunable tuned liquid column dampers with multi-cells for wind vibration control of tall buildings
Author(s): Dong-Ik Kim; Kyung-Won Min; Ji-Hun Park; Hye-Ri Lee; Jae-Keon Kim; Kyu-Seok Hwang; Yong-Sik Gil
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Paper Abstract

Tuned liquid column damper (TLCD) is used to reduce wind induced building acceleration by tuning its natural frequency to that of a building. After building construction, its natural frequency may differ from the original one. Thus, TLCD installed at a building should have the shifted natural frequency without its serious structural modification. Conventional TLCD changes its natural frequency by only regulating liquid height, which destroys U shape of TLCD. This study proposes new concept of TLCD which yields wide range of natural frequency with very simple modification maintaining original shape. Vertical columns of TLCD are divided into several individual cell type small columns. The liquid in individual cell type columns cannot move by air pressure if their tops are sealed. By taking appropriate number of cell type columns in sealed condition, sectional area ratio of vertical and horizontal columns is changed, which can provide new natural frequency same to shifted natural frequency of a building. TLCD's with multi cells are analytically evaluated and experimentally verified using shaking table test according to the number of sealed cell type small columns.

Paper Details

Date Published: 3 April 2012
PDF: 11 pages
Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 83452L (3 April 2012); doi: 10.1117/12.914452
Show Author Affiliations
Dong-Ik Kim, Dankook Univ. (Korea, Republic of)
Kyung-Won Min, Dankook Univ. (Korea, Republic of)
Ji-Hun Park, Univ. of Incheon (Korea, Republic of)
Hye-Ri Lee, I'ST Co. Ltd. (Korea, Republic of)
Jae-Keon Kim, Hyundai Engineering and Construction Co., Ltd. (Korea, Republic of)
Kyu-Seok Hwang, Hyundai Engineering and Construction Co., Ltd. (Korea, Republic of)
Yong-Sik Gil, Hyundai Engineering and Construction Co., Ltd. (Korea, Republic of)


Published in SPIE Proceedings Vol. 8345:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Masayoshi Tomizuka; Chung-Bang Yun; Jerome P. Lynch, Editor(s)

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