Talks and Poster Presentations (with Proceedings-Entry):
M. Ralbovsky, R. Flesch, H. Friedl:
"Coupling of buildings by viscous dampers and nonlinear response estimation";
Talk: 14th European Conference on Earthquake Engineering,
- 09-03-2010; in: "Proceedings 14. European Conference on Earthquake Engineering (DVD)",
M. Ralbovsky, R. Flesch, H. Friedl (ed.);
MAEE, Macedonien Association of Earthquake Engineering,
Paper ID 1297.
This paper deals with analysis of two adjacent buildings, one of which does not fulfil code requirements.
Earthquake loads cause an opening gap at soil-foundation contact of concrete walls, founded on strips. This
nonlinearity was analysed by nonlinear static analysis and resulting effective stiffness was used to update
structural eigenfrequencies and modes shapes. Comparison to linear response spectra analysis showed large
differences, especially in stress distribution. Retrofitting by installing viscous dampers is proposed. Dampers are
positioned at the roof and provide coupling of adjacent buildings. Dampers ensure force transfer between the
buildings, increase modal damping, and avoid pounding of the adjacent buildings. They provide a convenient
method of retrofitting, since hospital operation is not disturbed by the installation.
Keywords: Viscous damper, coupling, opening gap, nonlinear analysis
Created from the Publication Database of the AIT Austrian Institute of Technology.