Premium
Seismic stability and the force reduction factor of code‐designed one‐storey asymmetric structures
Author(s) -
De Stefano Mario,
Rutenberg Avigdor
Publication year - 1999
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/(sici)1096-9845(199907)28:7<785::aid-eqe842>3.0.co;2-l
Subject(s) - instability , strength reduction , reduction (mathematics) , structural engineering , stiffness , stability (learning theory) , asymmetry , ground motion , safety factor , margin (machine learning) , engineering , mathematics , mechanics , physics , computer science , geometry , finite element method , quantum mechanics , machine learning
This paper evaluates the stability bounds of the force reduction factor R of unidirectionally loaded UBC designed asymmetric one‐storey systems having different mass and stiffness distributions. It is shown that whereas the instability effects due to torsional response are neutralized by the asymmetry‐related over strength, instability bounds may still be lower than the R ‐values prescribed by the code. Results of a limited study indicate that bidirectional ground motion tends to reduce further the safety margin against dynamic instability. Copyright © 1999 John Wiley & Sons, Ltd.