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Effect of embedment length on local bond strength / Nasr-Eddine Koutchoukali 

Public ISBD Titre : Effect of embedment length on local bond strength Type de document : texte imprimé Auteurs : Nasr-Eddine Koutchoukali, Auteur ; Neil M. Hawkins, Directeur de thèse Editeur : University of Washington Année de publication : 1985 Importance : 37 f. Présentation : ill. Format : 28 cm. Note générale : Mémoire de Master : Génie Civil: Etats-Unis, University of Washington : 1985 Annexe f. 38 - 98 . Bibliogr. [2] f Langues : Anglais (eng) Mots-clés : Embedment  length Local  bond Stress-slip  relationship Index. décimale : Ms00485 Résumé : This thesis reports an experimental investigation of the effect of embedment length on local bond strength. This investigation permits comparison of the University of Washington's (UW) and the University of California, Berkeley's (UCB) models for the local bond stress-slip relationship of deformed reinforcing bars subjected to generalized excitations. Sixteen specimens were tested. Each specimen simulated the confined region of a beam-column connection. The tests were run under displacement control by subjecting one bar end to the required force needed to induce the desired slip while leaving the other end unloaded. The influence of the following parameters on the bond stress-slip relationship was investigated: (1) loading history, (2) bonded length, and (3) concrete compressive strength. Detailed experimental results are presented and those results are compared with the analytical models developed at both UW and UCB. The UW model in general, overestimated the bond strength for a given slip. This finding is probably due to the fact that the model was developed after experimental tests on shorter embedment length (2lugs) than the length used for the tests reported here (3lugs). The shape of the curve predicted by the UCB model compared well with the test results reported here but the recommended value for Ʈmax was less than the measured results. However, the maximum value for Ʈmax recorded in the original UCB tests compared fairly well with the max values observed in these tests. It was also observed that the recommended values for slips S₁ and S₂ in the UCB model should be modified when bonded lengths used are different from those used in the UCB tests (5db). Effect of embedment length on local bond strength [texte imprimé] / Nasr-Eddine Koutchoukali, Auteur ; Neil M. Hawkins, Directeur de thèse . - [S.l.] : University of Washington, 1985 . - 37 f. : ill. ; 28 cm. Mémoire de Master : Génie Civil: Etats-Unis, University of Washington : 1985 Annexe f. 38 - 98 . Bibliogr. [2] f Langues : Anglais (eng) Mots-clés : Embedment  length Local  bond Stress-slip  relationship Index. décimale : Ms00485 Résumé : This thesis reports an experimental investigation of the effect of embedment length on local bond strength. This investigation permits comparison of the University of Washington's (UW) and the University of California, Berkeley's (UCB) models for the local bond stress-slip relationship of deformed reinforcing bars subjected to generalized excitations. Sixteen specimens were tested. Each specimen simulated the confined region of a beam-column connection. The tests were run under displacement control by subjecting one bar end to the required force needed to induce the desired slip while leaving the other end unloaded. The influence of the following parameters on the bond stress-slip relationship was investigated: (1) loading history, (2) bonded length, and (3) concrete compressive strength. Detailed experimental results are presented and those results are compared with the analytical models developed at both UW and UCB. The UW model in general, overestimated the bond strength for a given slip. This finding is probably due to the fact that the model was developed after experimental tests on shorter embedment length (2lugs) than the length used for the tests reported here (3lugs). The shape of the curve predicted by the UCB model compared well with the test results reported here but the recommended value for Ʈmax was less than the measured results. However, the maximum value for Ʈmax recorded in the original UCB tests compared fairly well with the max values observed in these tests. It was also observed that the recommended values for slips S₁ and S₂ in the UCB model should be modified when bonded lengths used are different from those used in the UCB tests (5db).

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
Ms00485	Ms00485	Papier	Bibliothèque centrale	Mémoire de Master	Disponible

Documents numériques

KOUTCHOUKALI.Nasr-Eddine.pdf URL