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Analysis of frames containing cracks and resting on elastic foundations

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Abstract

A fracture mechanics model has been implemented in the stiffness matrix method to analyze skeletal structures resting on elastic foundations and containing cracks at superstructure and substructure elements. Stiffness matrices for cracked superstructure and substructure elements have been developed based on fracture mechanics techniques and the stiffness matrix method.

The present model has been applied to investigate effects of crack size and location, type of loading, soil subgrade modulus, foundation rigidity, and geometry of the structure on the behaviour of cracked structures taking into consideration the soil-structure interaction effect.

Résumé

On a introduit dans la méthode des matrices de rigidité un modèle de mécanique de rupture en vue d'analyser des charpentes reposant sur des fondations élastiques et comportant des fissures dans les éléments de superstructure et de substructure.

Des matrices de rigidité relatives à des éléments de substructure et de superstructure fissurés ont été développées en se basant sur les techniques de la mécanique de la rupture et sur la méthodologie de la matrice de rigidité.

Le modèle actuel a été appliqué à l'étude des effets, sur le comportement de charpentes fissurées, de la taille et de la position d'une fissure, du type de sollicitation, du module caractéristique du sol, de la rigidité de la fondation et de la géométrie des charpentes, et ce en tenant compte de l'interaction entre le sol et la charpente.

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El-Haddad, M.H., Ramadan, O.M. & Bazaraa, A.R. Analysis of frames containing cracks and resting on elastic foundations. Int J Fract 45, 81–102 (1990). https://doi.org/10.1007/BF00037168

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  • DOI: https://doi.org/10.1007/BF00037168

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