Abstract
In situ testing of bridges demands considerable expertise and entails heavy expenditure. The objectives of the tests may vary from being merely routine tests to diagnostic tests in order to locate the source of distress in the structure. An attempt is made in this paper to discuss briefly the objectives of the tests and the instrumentation usually employed. Salient features of the tests on concrete bridge superstructures reported in the last decade are summarised. Discussion on the evaluation criteria and recommendations for further work are also included.
Résumé
L'essaiin situ des ponts exige un très grand savoir-faire et entraîne de lourdes dépenses. Les essais peuvent se donner des objectifs très différents: du simple contrôle de routine au diagnostic visant à localiser les causes de défaillance de la structure. Les essaisin situ peuvent être entrepris dans le but de compléter des études sur modèles, particulièrement lorsqu'on ne peut déterminer tous les paramètres des prototypes et obtenir un modèle expérimental parfaitement fiable. Un certain nombre d'étudesin situ de ponts se trouve décrit dans la littérature. Mais il ne semble pas qu'un effort systématique ait été entrepris pour résumer ces études.
Cet article se propose d'examiner avec concision les principaux objectifs des essais retenus, l'instrumentation utilisée ainsi que les développments récents apparus dans l'instrumentation et dans les dispositifs caractéristiques d'essais en vue de mettre en évidence les apports positifs ou les insuffisances. Les objectifs des essais résumés ici vont de la comparaison entre données théoriques et résultats des mesures sous charge statique ou dynamique jusqu'aux essais destructifs des ponts.
Cet article comprend les essais décrits et publiés ces 10 ou 12 dernières années sur les superstructures en béton, ainsi qu'un examen des critères d'évaluation et les recommandations pour les travaux publics.
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Prakash Rao, D.S., Tamhankar, M.G. & Sharma, S.P. Literature survey onin situ testing of concrete bridges. Mat. Constr. 16, 457–466 (1983). https://doi.org/10.1007/BF02476345
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DOI: https://doi.org/10.1007/BF02476345