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Matériaux et Construction

, Volume 17, Issue 1, pp 65–68 | Cite as

Predictions of comulative damage for concrete and reinforced concrete

  • S. P. Shah
Article

Abstract

Nonlinear damage evolution equation is suggested to predict fatigue life of plain concrete subjected to sequential, constant amplitude loading. This approach seems to eliminate the nonconservative aspect of the linear damage law (the Miner hypothesis) and is based on the observed shape of the damage growth relationship. For serviceability based design of reinforced concrete structures, a simple nonlinear relationship is developed to relate the increases in deflection and crack width with the cycle-ratio. The results compare favorably with experimental data.

Keywords

Fatigue Crack Width Fatigue Loading Cumulative Damage Plain Concrete 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

On suggère une équation d'évolution non linéaire de la détérioration en vue de prédire la résistance ultime en fatigue du béton non armé soumis à un chargement séquentiel d'amplitude constante. Cette approche paraît éliminer l'aspect dissipatif de la loi linéaire de dététérioration (hypothèse de Miner) et elle repose sur la forme observée de la relation de croissance de la détérioration. Aux fins de calcul en relation avec l'aptitude au service des structures de béton armé, on a développé une simple relation non linéaire qui relie les augmentations de flèche et les largeurs de fissures avec le taux de sollicitation cyclique. Les résultats se rapprochent des données expérimentales.

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Copyright information

© Bordas-Dunod 1984

Authors and Affiliations

  • S. P. Shah
    • 1
  1. 1.Northwestern UniversityEvanstonUSA

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