Investigations on the Dynamic Response of Adjacent Buildings Connected by Viscous Dampers

This paper investigates the seismic performance of two adjacent buildings connected by viscous dampers. Three types of damper placement are discussed, including installing dampers within a single building, connecting two buildings at the same floor level, and connecting two buildings at the inter-st...

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Bibliographic Details
Published in:Buildings (Basel) 2022-09, Vol.12 (9), p.1480
Main Authors: Chen, Peng, Wu, Xiaobin
Format: Article
Language:English
Subjects:
adjacent building
Buildings
Construction
Control algorithms
Design techniques
Dynamic response
Earthquake dampers
Earthquakes
Flooring
Investigations
Mathematical models
Modal damping
Numerical models
Placement
Seismic activity
Seismic design
Seismic engineering
Seismic response
time history analysis
transmissibility
Viscoelasticity
viscous damper
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Summary:This paper investigates the seismic performance of two adjacent buildings connected by viscous dampers. Three types of damper placement are discussed, including installing dampers within a single building, connecting two buildings at the same floor level, and connecting two buildings at the inter-story level. Analytical models are established to consider various dynamic properties of the adjacent buildings, and the theoretical solutions are obtained, including the transmissibility curves, additional modal damping, and input energy under the seismic design spectrum. Time history analyses of an engineering project are performed with different damper placements. Different numerical models are compared for frequently and rarely occurred earthquakes. The seismic mitigation effect is discussed with regard to the story drift reduction rate and dynamic energy. Theoretical and numerical results demonstrate that the connecting dampers provide added modal damping while causing the coupled response. As a result, it is less efficient than traditional ways of placement within a building. Furthermore, the connecting dampers significantly increase the reaction of the floors without installed dampers. When designing dampers to connect the adjacent buildings, careful engineering calculations should be made.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings12091480