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Seismic Evaluation of a Tall Reinforced Concrete Frame Building

by Gary C. Hart, Univ of California, United States,
Stuart J. Thurston, Univ of California, United States,
Robert E. Englekirk, Univ of California, United States,



Document Type: Proceeding Paper

Part of: Seismic Engineering: Research and Practice

Abstract:

Accelerations at basement, fifth and tenth floor levels of a reinforced concrete apartment building were recorded during the October 1st, 1987 Whittier-Narrows earthquake. These accelerations are compared with predictions using a linear-elastic computer model. The building has a frame structure in one direction and shear walls in the other. Only the response in the frame direction is discussed in this paper. Although no significant concrete cracks were found during our post earthquake visual inspection, the analyses indicate that a small amount of yielding probably occurred during the earthquake. Good agreement was obtained between the linear-elastic model prediction (using cracked member properties) and the measured accelerations, although about halfway through the main shaking the building period increased slightly above that predicted by the linear-elastic model. This is consistent with yielding of some members or inelastic distortions of the joints.

Subject Headings: Reinforced concrete | Concrete frames | Earthquakes | Computer models | Dynamic structural analysis | Concrete structures | Seismic tests

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