Crack reinforcement of old steel structures using adhesively bonded composite
LEPRETRE ; CHATAIGNER ; DIENG ; GAILLET
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
LEPRETRE ; CHATAIGNER ; DIENG ; GAILLET
Résumé / Abstract
Though the use of adhesively bonded composite reinforcement has not been extensively applied on steel structures, it may be a good alternative to existing methods regarding the repair of old cracked steel structures, being mainly built with mild steel or puddled iron. The proposed communication will present investigations led in the framework of a Phd thesis in collaboration with French Railway company SNCF. The studied aimed at first investigating experimentally the reinforcement capabilities of different adhesively bonded composite systems on both mild steel and puddled iron cracked elements. The influence of the length of the crack and the asymmetry of the reinforcement have been studied. In addition, some investigations have also been made on the use of prestressed bonded reinforcement. The obtained experimental results allowed obtaining stress intensity factors modification coefficients that may be used in the design process. These factors have also been compared to numerical results from a developed finite element modeling procedure. Such a procedure could be a basis for the determination of other stress intensity factors for other geometries.
