Cost-effectiveness Optimization for Aseismic Design Criteria of RC Buildings

Abstract

Costs and losses from possible future earthquakes, and the difficulty in repairing post-yielding damage, strongly suggest the need for proper consideration in the design rather than just life loss prevention. This can be addressed through the development of design criteria that balance the initial cost of the building with the expected potential losses from future earthquake-induced structural damage. Here, the development of a methodology for determining optimal, cost-effective, earthquake-resistant design criteria will be presented and applied to a class of reinforced concrete (RC) buildings located in the Los Angeles area. Optimal design criteria are determined on the basis of the total expected life-cycle cost and acceptable risk of death from which optimal base shear coefficients and target reliabilities can be obtained. The methodology and application require expressing the initial cost, the expected life-cycle damage cost and the expected risk to human life, vis-a-vis all likely earthquakes, as functions of the underlying limit state probabilities. This presentation includes methodology, total life-cycle cost function, structural damage modeling, reliability assessment, multiobjective and multilevel optimization scheme and illustrative application.

Department(s)

Civil, Architectural and Environmental Engineering

Document Type

Book

Document Version

Citation

File Type

text

Language(s)

English

Rights

C© 2024 American Society of Civil Engineers, All rights reserved.

Publication Date

01 Dec 1999

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