Flexural behavior of concrete-filled circular steel tubes under high-strain rate impact loading / Y. Deng in Journal of structural engineering, Vol. 138 N° 3 (Mars 2012)  

Public ISBD [article]  inJournal of structural engineering > Vol. 138 N° 3 (Mars 2012) . - pp. 449-456 Titre : Flexural behavior of concrete-filled circular steel tubes under high-strain rate impact loading Type de document : texte imprimé Auteurs : Y. Deng, Auteur ; C. Y. Tuan, Auteur ; Xiao, Y., Auteur Année de publication : 2012 Article en page(s) : pp. 449-456 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Dynamic response Concrete Tubes Steel Posttensioning Strain rates Impact tests Fiber-reinforced concrete Résumé : Nine simply supported circular steel concrete-filled tubes (CFTs), two circular steel posttensioned concrete-filled tubes (PTCFTs), and one circular steel fiber–reinforced concrete-filled tube (FRCFT) have been tested in an instrumented drop-weight impact facility. The weight and the height of the drop-weight were varied to cause failure in some test specimens. The failure modes and local damages in those specimens have been investigated extensively. Failure in the steel tubes was commonly tensile facture or rupture along the circumference. Concrete core in the impact area commonly crushed under compression and cracked under tension. The use of prestressing strands and steel fibers significantly restrained the concrete tension cracks in the PTCFT and FRCFT specimens, respectively. The experimental results are analyzed in the context of principles of energy and momentum conservation. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v138/i3/p449_s1?isAuthorized=no [article] Flexural behavior of concrete-filled circular steel tubes under high-strain rate impact loading [texte imprimé] / Y. Deng, Auteur ; C. Y. Tuan, Auteur ; Xiao, Y., Auteur . - 2012 . - pp. 449-456. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 3 (Mars 2012) . - pp. 449-456 Mots-clés : Dynamic response Concrete Tubes Steel Posttensioning Strain rates Impact tests Fiber-reinforced concrete Résumé : Nine simply supported circular steel concrete-filled tubes (CFTs), two circular steel posttensioned concrete-filled tubes (PTCFTs), and one circular steel fiber–reinforced concrete-filled tube (FRCFT) have been tested in an instrumented drop-weight impact facility. The weight and the height of the drop-weight were varied to cause failure in some test specimens. The failure modes and local damages in those specimens have been investigated extensively. Failure in the steel tubes was commonly tensile facture or rupture along the circumference. Concrete core in the impact area commonly crushed under compression and cracked under tension. The use of prestressing strands and steel fibers significantly restrained the concrete tension cracks in the PTCFT and FRCFT specimens, respectively. The experimental results are analyzed in the context of principles of energy and momentum conservation. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v138/i3/p449_s1?isAuthorized=no

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