Minimum Building Life-Cycle Cost Design Criteria. I: Methodology
Publication: Journal of Structural Engineering
Volume 127, Issue 3
Abstract
In view of the large damage suffered in recent earthquakes and hurricanes, building design criteria are developed to protect life and reduce damage and loss to an acceptable level. The problem is minimizing the expected total life-cycle cost with respect to the design load and resistance. Load uncertainty includes occurrence time, intensity, and duration. The costs of construction, maintenance, and failure consequences, including deaths and injuries, as well as discounting cost over time, are considered. Optimal values are obtained of design variables and target reliability under single and multiple time-varying loads. Also investigated is sensitivity of the optimal design to important loading and structural parameters. The optimal design is found to depend primarily on the limit state consequences (costs), and to a lesser degree on the structural life. For multiple hazards, the optimal design is controlled by the hazard with large uncertainty and severe failure consequences. In a companion paper applications are given of the method to design multistory office buildings against earthquakes and winds.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 127 • Issue 3 • March 2001
Pages: 330 - 337
History
Received: Jun 6, 2000
Published online: Mar 1, 2001
Published in print: Mar 2001
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