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Title:
ULTRALOW FREQUENCY TUNED LIQUID MASS DAMPER
Document Type and Number:
WIPO Patent Application WO/2018/196276
Kind Code:
A1
Abstract:
The present invention relates to the field of bridge vibration control, and discloses an ultralow frequency tuned liquid mass damper. The damper comprises a damping case (4). A set of springs (2, 3) are disposed within the damping case (4). The set of springs (2, 3) have one end fixed on the damping case (4) and the other connected to a mass block (1). The damping case (4) is filled with a damping liquid (5). The mass block (1) is completely immersed or semi-immersed in the damping liquid (5). The ultralow frequency tuned liquid mass damper has a damping ratio of 3% to 35% and an inherent frequency of 0.05 Hz to 0.5 Hz. The ultralow frequency tuned liquid mass damper of the present invention can take full advantage of the additional mass of the damping liquid (5) along with the buoyancy effect of the liquid to significantly reduce static force elongation of the spring, the requirement on controlling structural vibrations at 0.5 Hz or less is satisfied, and the number and mounting space of the springs used for the damper is reduced, thereby conforming to restriction requirements on a mounting space of the damper during actual construction.

Inventors:
WANG ZHENGXING (CN)
CHAI XIAOPENG (CN)
ZHU HONGPING (CN)
WANG BO (CN)
JIN GUOQIANG (CN)
LIU PENGFEI (CN)
LI CHONG (CN)
HUANG HE (CN)
MA CHANGFEI (CN)
WU XIAOBO (CN)
YIN QI (CN)
SHENG NENGJUN (CN)
LV JIANG (CN)
ZHU SHIFENG (CN)
ZHANG HANWEI (CN)
Application Number:
PCT/CN2017/103629
Publication Date:
November 01, 2018
Filing Date:
September 27, 2017
Export Citation:
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Assignee:
CHINA RAILWAY BRIDGE SCIENCE RES INST LTD (CN)
CHINA RAILWAY MAJOR BRIDGE ENGINEERING GROUP CO LTD (CN)
International Classes:
E01D19/00
Domestic Patent References:
WO1997027408A11997-07-31
Foreign References:
CN106948256A2017-07-14
CN203626078U2014-06-04
CN101492941A2009-07-29
EP0440260B11995-01-04
Attorney, Agent or Firm:
WUHAN ZHI QUAN PATENT AGENCY (CN)
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