Performance and method of vibration control of a suspendome using dampers to replace struts

MA Jinfeng1, LIU Mingjie1, 2, 3

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (18) : 173-185.

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (18) : 173-185.

Performance and method of vibration control of a suspendome using dampers to replace struts

  • MA Jinfeng1,LIU Mingjie1,2,3
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Abstract

In view of the dynamic response of suspendome under earthquake, a vibration control method using viscoelastic dampers to replace the struts of suspendome is proposed. Based on the principle of structural mechanics, the static displacement formula of the top chord node of suspendome is derived. The theoretical formulas for the stiffness coefficient K and damping coefficient C of viscoelastic dampers are proposed. Parameterized analysis is conducted using finite element software for structural span, structural rise span ratio, damper parameters, replacement rod types, and replacement strut positions. The results show that the vibration reduction effect of replacing the damper parameters with theoretical calculated values is better than that of the control group. The results verify the applicability of the damper parameter theoretical formula to vibration control of suspendome. The optimal replacement member type for suspendome is strut, with an optimal vibration reduction rate of 72.46%. 

Key words

suspendome / vibration control / viscoelastic damper / damper parameters / theoretical analysis 

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MA Jinfeng1, LIU Mingjie1, 2, 3. Performance and method of vibration control of a suspendome using dampers to replace struts[J]. Journal of Vibration and Shock, 2024, 43(18): 173-185

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