On the use of interstorey velocity for the seismic retrofit of steel frames with viscous dampers

A simple formula is proposed that provides interstorey velocities of steel framed structures at specific interstorey drift levels. The proposed equation is statistically derived from the variation of floor relative velocity results along the height of the structure. These results are obtained by non...

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Bibliographic Details
Published in:Soil dynamics and earthquake engineering (1984) 2020-02, Vol.129, p.105312, Article 105312
Main Authors: Logotheti, Vasileia E., Kafetzi, Theoni C., Papagiannopoulos, George A., Karabalis, Dimitris L.
Format: Article
Language:English
Subjects:
Earthquake dampers
Interstorey drift
Interstorey velocity
Nonlinear analysis
Seismic retrofit
Steel
Steel frames
Steel structures
Velocity
Viscous dampers
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Summary:A simple formula is proposed that provides interstorey velocities of steel framed structures at specific interstorey drift levels. The proposed equation is statistically derived from the variation of floor relative velocity results along the height of the structure. These results are obtained by non-linear inelastic time history analyses of a number of plane steel moment resisting frames. The proposed equation can then be used for seismic retrofit purposes, i.e., in dimensioning the linear or non-linear viscous dampers to be inserted in a steel frame. A detailed numerical example is provided and conclusions regarding the accuracy and the potential use of interstorey velocity are drawn. •Interstorey velocity is provided for specific interstorey drift levels.•Interstorey velocity is used in seismic retrofit of a steel MRF.•Dimensioning of viscous dampers using interstorey velocity.
ISSN:0267-7261
1879-341X
DOI:10.1016/j.soildyn.2018.07.042