Torsional Response of High-Rise Buildings

by Gary C. Hart, (M.ASCE), Assoc. Prof.; Mechanics and Structures Dept., School of Engrg. and applied Sci., Univ. of California, Los Angeles, Calif.,
Marshall Lew, (A.M.ASCE), Grad. Student; Mechanics and Structures Dept., School of Engrg. and applied Sci., Univ. of California, Los Angeles, Calif.,
Roger M. DiJulio, Jr., Grad. Student; Mechanics and Structures Dept., School of Engineering and Applied Sci., Univ. of California, Los Angeles, Calif.,


Serial Information: Journal of the Structural Division, 1975, Vol. 101, Issue 2, Pg. 397-416


Document Type: Journal Paper

Abstract: Ambient and earthquake response records obtained in several southern California high-rise buildings are analyzed. Building translational and torsional natural periods are estimated and compared. Ambient response is found to be an important indicator of earthquake response. Torsional building response resulting from ambient and earthquake excitation was found to be significant. A design spectrum is developed representing a standardized torsional ground motion of El Centro 1940 Earthquake Intensity.

Subject Headings: Torsion | High-rise buildings | Earthquakes | Ground motion | Seismic design | Excitation (physics) | Light rail transit | North America | California | United States

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