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Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2013, Vol. 14 Issue (1): 47-60    DOI: 10.1631/jzus.A1200181
Civil Engineering     
Optimal arrangement of viscoelastic dampers for seismic control of adjacent shear-type structures
Xiao Huang, Hong-ping Zhu
School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China; Hubei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan 430074, China
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Abstract  The optimal arrangement of viscoelastic dampers (VEDs) used to link two adjacent shear-type structures under seismic excitation was investigated. A two-step optimal design method is proposed. First, optimal parameter expressions of the Kelvin model are used to calculate the optimal stiffness and damping coefficient of the VEDs. Then, using the two-step optimal design method, taking the quadratic performance index as the optimization objective, the optimal arrangement of the dampers is determined. General rules about the optimal arrangement of the VEDs were obtained. The results show that the placement of only one damper between two adjacent shear-type structures should be avoided; if more than one damper is used, they should be distributed on the top and lower floors of the structures. Optimization of the number of dampers had little effect on response reduction. The most important factor was the optimization of the placement of the dampers. Through comparative study, for buildings of equal and unequal heights, the optimal parameters of dampers from parametric studies were shown to match the theoretical results for different numbers and placements of dampers. The level of response reduction was shown to be sensitive to the damping coefficient of the dampers.

Key wordsAdjacent shear-type structures      Viscoelastic damper (VED)      Optimal arrangement      Seismic response     
Received: 13 July 2012      Published: 02 January 2013
CLC:  TU352.1  
Cite this article:

Xiao Huang, Hong-ping Zhu. Optimal arrangement of viscoelastic dampers for seismic control of adjacent shear-type structures. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2013, 14(1): 47-60.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1200181     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2013/V14/I1/47

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