Building Columns under Strong Earthquake Exposure

by John A. Blume, (F.ASCE), Pres.; John A. Blume & Assoc. Res. Div., San Francisco, CA,

Serial Information: Journal of the Structural Division, 1971, Vol. 97, Issue 9, Pg. 2351-2369

Document Type: Journal Paper


A column of a hypothetical 12-story reinforced concrete building located in an active earthquake area is analyzed in view of current knowledge from earthquake experience and the nuclear explosives test program. The analysis is conducted with probabilistic considerations and parameter studies of ground motion, concurrent and unidirectional response, various degrees of design reduction of cantilever overturning moment, elastic and inelastic behavior, changes in column inflection points, and variations in actual column strength. Probabilities of damage are obtained for columns designed by USD and WSD procedures under seismic code requirements and then subjected to estimated strong earthquake motion as key elements of the building.

Subject Headings: Ground motion | Columns | Earthquakes | Reinforced concrete | Elastic analysis | Probability | Seismic tests | Building codes

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