Accidental Torsion in Buildings: Analysis V's Earthquake Motions

A simplified analysis procedure has been developed to consider accidental torsion in building design that is rational and convenient relative to building code. This procedure is extended and evaluated in this paper against measured accidental torsion determined from motions of twelve buildings\=with...

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Bibliographic Details
Published in:Journal of structural engineering (New York, N.Y.) N.Y.), 2001-05, Vol.127 (5), p.475-481
Main Authors: Lin, W, Chopra, A K, De la Llera, J.C.
Format: Article
Language:English
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Summary:A simplified analysis procedure has been developed to consider accidental torsion in building design that is rational and convenient relative to building code. This procedure is extended and evaluated in this paper against measured accidental torsion determined from motions of twelve buildings\=with nominally-symmetric plan\=recorded during Northridge (1994), Loma Prieta (1989), Whittier (1987), and Upland (1990) earthquakes. The selected buildings include structures in reinforced concrete and in steel that cover a wide range of structural systems, including moment resisting frames, shear walls, braced frames, and hybrid systems. After the measured torsion is interpreted and compared to analytical estimates, it is demonstrated that this procedure is sufficiently accurate to be used in design applications.
ISSN:0733-9445