Documents disponibles écrits par cet auteur

Behavior of self-centering steel plate shear walls and design considerations / Daniel M. Dowden in Journal of structural engineering, Vol. 138 N° 1 (Janvier 2012) 

Public ISBD [article]  in Journal of structural engineering > Vol. 138 N° 1 (Janvier 2012) . - pp. 11-21 Titre : Behavior of self-centering steel plate shear walls and design considerations Type de document : texte imprimé Auteurs : Daniel M. Dowden, Auteur ; Ronny Purba, Auteur ; Michel Bruneau, Auteur Année de publication : 2012 Article en page(s) : pp. 11-21 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Self-centering  Rocking  connection  Steel  plate  Shear  wall  Earthquake  engineering Résumé : This paper presents insights on the combined contribution of posttensioning and beam-to-column joint rocking connection in self-centering steel plate shear walls (SC-SPSWs). Moment, shear, and axial force diagrams along the boundary beam are developed based on capacity design principles and are compared with nonlinear cyclic push-over analysis results. These closed-form solutions are integrated into a design procedure to select cross-sectional areas of the posttension reinforcement and beam sizes: (1) to prevent in-span plastic hinges; (2) to ensure that posttension reinforcement remains elastic to maintain self-centering capability of the system; (3) to impose sufficient initial posttensioning to overcome wind and gravity loads; (4) to provide adequate beam plastic strength considering reduced moment capacity due to the presence of axial and shear forces; and (5) to consider posttension losses due to axial beam shortening. Using this fundamental behavior knowledge, and adding response-based performance objectives to the design procedure, a companion paper investigates the seismic response of SC-SPSW using time-history nonlinear analyses. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v138/i1/p11_s1?isAuthorized=no [article] Behavior of self-centering steel plate shear walls and design considerations [texte imprimé] / Daniel M. Dowden, Auteur ; Ronny Purba, Auteur ; Michel Bruneau, Auteur . - 2012 . - pp. 11-21. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 1 (Janvier 2012) . - pp. 11-21 Mots-clés : Self-centering  Rocking  connection  Steel  plate  Shear  wall  Earthquake  engineering Résumé : This paper presents insights on the combined contribution of posttensioning and beam-to-column joint rocking connection in self-centering steel plate shear walls (SC-SPSWs). Moment, shear, and axial force diagrams along the boundary beam are developed based on capacity design principles and are compared with nonlinear cyclic push-over analysis results. These closed-form solutions are integrated into a design procedure to select cross-sectional areas of the posttension reinforcement and beam sizes: (1) to prevent in-span plastic hinges; (2) to ensure that posttension reinforcement remains elastic to maintain self-centering capability of the system; (3) to impose sufficient initial posttensioning to overcome wind and gravity loads; (4) to provide adequate beam plastic strength considering reduced moment capacity due to the presence of axial and shear forces; and (5) to consider posttension losses due to axial beam shortening. Using this fundamental behavior knowledge, and adding response-based performance objectives to the design procedure, a companion paper investigates the seismic response of SC-SPSW using time-history nonlinear analyses. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v138/i1/p11_s1?isAuthorized=no

Case study on the impact of horizontal boundary elements design on seismic behavior of steel plate shear walls / Ronny Purba in Journal of structural engineering, Vol. 138 N° 5 (Mai 2012) 

Public ISBD [article]  in Journal of structural engineering > Vol. 138 N° 5 (Mai 2012) . - pp.645–657. Titre : Case study on the impact of horizontal boundary elements design on seismic behavior of steel plate shear walls Type de document : texte imprimé Auteurs : Ronny Purba, Auteur ; Michel Bruneau, Auteur Année de publication : 2012 Article en page(s) : pp.645–657. Note générale : Génie civil Langues : Anglais (eng) Mots-clés : In-span  plastic  hinge  Seismic  behavior  Steel  plate  shear  walls  Boundary  elements  design  Cumulative  plastic  incremental  deformation Résumé : A case study was conducted to investigate the seismic behavior of steel plate shear walls having boundary elements designed by two different philosophies. The first design approach does not guarantee that formation of in-span plastic hinges on horizontal boundary elements (HBEs) will be prevented, whereas the second approach guarantees that plastic hinges can only occur at the ends of HBEs. Pushover and nonlinear time-history analyses were conducted to investigate behavior. Results show that the development of in-span plastic hinges has significant consequences on the behavior of the structure through inducing (1) significant accumulation of plastic incremental deformations on the HBEs; (2) partial yielding of the infill plates; (3) lower global plastic strength compared with values predicted by code equations; and (4) total (elastic and plastic) HBE rotations greater than 0.03 radians after the structure was pushed cyclically up to a maximum lateral drift of 3%. Nonlinear time-history analyses also demonstrated that increasing the severity of the ground excitations [i.e., from design basis earthquake (DBE) to maximum considered earthquake (MCE)] acting on the structure with in-span plastic hinge accentuated the accumulation of plastic incremental deformations on the HBEs. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000490 [article] Case study on the impact of horizontal boundary elements design on seismic behavior of steel plate shear walls [texte imprimé] / Ronny Purba, Auteur ; Michel Bruneau, Auteur . - 2012 . - pp.645–657. Génie civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 5 (Mai 2012) . - pp.645–657. Mots-clés : In-span  plastic  hinge  Seismic  behavior  Steel  plate  shear  walls  Boundary  elements  design  Cumulative  plastic  incremental  deformation Résumé : A case study was conducted to investigate the seismic behavior of steel plate shear walls having boundary elements designed by two different philosophies. The first design approach does not guarantee that formation of in-span plastic hinges on horizontal boundary elements (HBEs) will be prevented, whereas the second approach guarantees that plastic hinges can only occur at the ends of HBEs. Pushover and nonlinear time-history analyses were conducted to investigate behavior. Results show that the development of in-span plastic hinges has significant consequences on the behavior of the structure through inducing (1) significant accumulation of plastic incremental deformations on the HBEs; (2) partial yielding of the infill plates; (3) lower global plastic strength compared with values predicted by code equations; and (4) total (elastic and plastic) HBE rotations greater than 0.03 radians after the structure was pushed cyclically up to a maximum lateral drift of 3%. Nonlinear time-history analyses also demonstrated that increasing the severity of the ground excitations [i.e., from design basis earthquake (DBE) to maximum considered earthquake (MCE)] acting on the structure with in-span plastic hinge accentuated the accumulation of plastic incremental deformations on the HBEs. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000490