Optimal application of fluid viscous dampers in tall buildings incorporating integrated damping systems
File(s)
Accepted version
Author(s)
Martinez-Paneda, Miguel
Elghazouli, Ahmed
Type
Journal Article
Abstract
This paper examines the detailed performance of an Integrated-Damping-System (IDS) approach which was
recently introduced to provide large damping levels by enabling two parts of a building to move independently
through a parallel arrangement of springs and fluid viscous dampers. Extensive assessments into the
characteristics and distribution of constituent dampers are illustrated through the dynamic response of a typical
300m central-core building. Besides examining the system performance under typical wind conditions and
selected seismic excitations, five damper placement methods are assessed for various linear and nonlinear damper
exponents. It is shown that intermediate exponents provide the best overall response. However, when the design
targets a particular damping, deformation or acceleration related performance parameter, specific combinations
of damper exponent and distribution can result in an optimal application. Most importantly, due to the underlying
IDS nature, which acts as an inherent large-mass damper, the findings show that the overall performance is not
highly sensitive to the damper placement and does not necessitate the use of an advanced distribution. Whilst
specific placements can be adopted to refine targeted performance aspects where necessary, simple and practical
uniform or stiffness proportional arrangements can be consistently employed with the IDS to provide a highly
effective solution.
recently introduced to provide large damping levels by enabling two parts of a building to move independently
through a parallel arrangement of springs and fluid viscous dampers. Extensive assessments into the
characteristics and distribution of constituent dampers are illustrated through the dynamic response of a typical
300m central-core building. Besides examining the system performance under typical wind conditions and
selected seismic excitations, five damper placement methods are assessed for various linear and nonlinear damper
exponents. It is shown that intermediate exponents provide the best overall response. However, when the design
targets a particular damping, deformation or acceleration related performance parameter, specific combinations
of damper exponent and distribution can result in an optimal application. Most importantly, due to the underlying
IDS nature, which acts as an inherent large-mass damper, the findings show that the overall performance is not
highly sensitive to the damper placement and does not necessitate the use of an advanced distribution. Whilst
specific placements can be adopted to refine targeted performance aspects where necessary, simple and practical
uniform or stiffness proportional arrangements can be consistently employed with the IDS to provide a highly
effective solution.
Date Issued
2021-12-10
Date Acceptance
2021-09-04
Citation
The Structural Design of Tall and Special Buildings, 2021, 30 (17), pp.1-26
ISSN
1541-7808
Publisher
Wiley-Blackwell
Start Page
1
End Page
26
Journal / Book Title
The Structural Design of Tall and Special Buildings
Volume
30
Issue
17
Copyright Statement
© 2021 John Wiley & Sons, Ltd. This is the accepted version of the following article: Martinez-Paneda, M., Elghazouli, A. Y., Struct Design Tall Spec Build 2021, 30( 17), e1892, which has been published in final form at https://doi.org/10.1002/tal.1892
Identifier
https://doi.org/10.1002/tal.1892
Subjects
Science & Technology
Technology
Construction & Building Technology
Engineering, Civil
Engineering
damper arrangement
damping systems
dynamic response
mass dampers
fluid viscous dampers
multistory structures
passive damping
tall buildings
OPTIMAL-DESIGN
FRAMED STRUCTURES
VIBRATION CONTROL
PLACEMENT
PERFORMANCE
DISTRIBUTIONS
COEFFICIENTS
CONTROLLERS
ALGORITHM
Civil Engineering
0905 Civil Engineering
Publication Status
Published
Article Number
e1892
Date Publish Online
2021-10-01