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Code-Implied Structural Safety for Earthquake Loading

by David Elms, Univ of Canterbury, New Zealand,
Tom Paulay, Univ of Canterbury, New Zealand,
Sachio Ogawa, Univ of Canterbury, New Zealand,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

A method is described for calculating the probability of failure of reinforced concrete frame structures due to earthquake loading, for use in code calibration exercises. The failure criterion is taken to be maximum interstorey displacement. This is related to basic structural variables through the medium of the cumulative inelastic energy or damage energy for each storey, computed by first finding the total damage energy for a structure through the use of single degree of freedom inelastic analyses, and then by determining the fraction of energy in each storey by an elastic random vibration analysis. The procedure is checked against the results of full time history analyses and is found to give satisfactory results.

Subject Headings: Reinforced concrete | Structural safety | Load and resistance factor design | Concrete frames | Elastic analysis | Concrete structures | Structural analysis

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