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Title: Innovative technology for seismic response reduction of tall buildings with podium structures
Authors: Xu, Y 
Chen, J
Ng, CL
Qu, W
Keywords: Podium Structure
Seismic response
Semi-active logic control algorithm
Smart damper
Structural control technology
Tall building
Issue Date: 2003
Publisher: Hong Kong Institution of Engineers
Source: HKIE transactions, 2003, v. 10, no. 4, p. 88-94 How to cite?
Journal: HKIE transactions 
Abstract: Structural control technology offers many new ways to protect structures from natural hazards. A comprehensive experimental investigation was carried out in The Hong Kong Polytechnic University to apply multiple magnetorheological (MR) dampers to connect podium structures to tall buildings for preventing seismic damage due to sudden change of lateral stiffness and mass. A slender 12-storey building model and a relatively stiff 3-storey building model were constructed to represent a tall building and a podium structure respectively. MR dampers were used to link the 3-storey building to the 12-storey building at each of the bottom three storeys. The two buildings without any connection and with a rigid connection were first tested under scaled El Centro 1940 N-S ground motion. A test was then performed on the two buildings connected by MR dampers manipulated by a semi-active logic control algorithm. Finally, reliability of the semi-active control system and robustness of the semi-active logic control algorithm were experimentally investigated. The experimental results have demonstrated that the multiple MR dampers with the semi-active logic control algorithm can achieve a significant reduction in seismic responses of both buildings with very small power requirement. The proposed semi-active control system is of highly reliable and robust.
ISSN: 1023-697X
EISSN: 2326-3733
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