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Finite-element models for slender, posttensioned masonry walls loaded out-of-plane / Jennifer R. Bean Popehn in Journal of structural engineering, Vol. 137 N° 12 (Décembre 2011) 

Public ISBD [article]  in Journal of structural engineering > Vol. 137 N° 12 (Décembre 2011) . - pp. 1489-1498 Titre : Finite-element models for slender, posttensioned masonry walls loaded out-of-plane Type de document : texte imprimé Auteurs : Jennifer R. Bean Popehn, Auteur ; Arturo E. Schultz, Auteur Année de publication : 2012 Article en page(s) : pp. 1489-1498 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Posttensioned  Masonry  Tendon  Stress  Transverse  loading  Out-of-plane  Flexure  Finite  element  DRAIN-2DX Résumé : Nonlinear finite-element models were developed, verified, and used to simulate the measured response of twelve 3.54 m (11.6 ft) tall posttensioned masonry walls with 810×100  mm (32×4  in.) cross sections that were tested to failure under uniform lateral loading in a laboratory. Variables included masonry type, wall slenderness, degree of tendon restraint, and prestress magnitude. The force-displacement relations obtained from the experimental tests of the walls were simulated using models developed by using an extended version of the program Dynamic Response Analysis of Inelastic Two-Dimensional Structures (DRAIN-2DX), and the results illustrate the influence of tensile strength, masonry type, magnitude of prestress, and tendon restraint on wall response to out-of-plane lateral loading. The computations indicate that load-displacement response of posttensioned masonry (PTM) walls is influenced by masonry tensile strength and that the stiffness and number of tendon restraints have a direct effect on peak load capacity and postpeak unloading slope. Tendon stress and masonry compression strain responses to applied loading were also investigated using finite-element analysis. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i12/p1489_s1?isAuthorized=no [article] Finite-element models for slender, posttensioned masonry walls loaded out-of-plane [texte imprimé] / Jennifer R. Bean Popehn, Auteur ; Arturo E. Schultz, Auteur . - 2012 . - pp. 1489-1498. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 12 (Décembre 2011) . - pp. 1489-1498 Mots-clés : Posttensioned  Masonry  Tendon  Stress  Transverse  loading  Out-of-plane  Flexure  Finite  element  DRAIN-2DX Résumé : Nonlinear finite-element models were developed, verified, and used to simulate the measured response of twelve 3.54 m (11.6 ft) tall posttensioned masonry walls with 810×100  mm (32×4  in.) cross sections that were tested to failure under uniform lateral loading in a laboratory. Variables included masonry type, wall slenderness, degree of tendon restraint, and prestress magnitude. The force-displacement relations obtained from the experimental tests of the walls were simulated using models developed by using an extended version of the program Dynamic Response Analysis of Inelastic Two-Dimensional Structures (DRAIN-2DX), and the results illustrate the influence of tensile strength, masonry type, magnitude of prestress, and tendon restraint on wall response to out-of-plane lateral loading. The computations indicate that load-displacement response of posttensioned masonry (PTM) walls is influenced by masonry tensile strength and that the stiffness and number of tendon restraints have a direct effect on peak load capacity and postpeak unloading slope. Tendon stress and masonry compression strain responses to applied loading were also investigated using finite-element analysis. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i12/p1489_s1?isAuthorized=no