Documents disponibles écrits par cet auteur

Displacement-based method of analysis for regular reinforced-concrete wall buildings / Panagiotou, Marios in Journal of structural engineering, Vol. 137 N° 6 (Juin 2011) 

Public ISBD [article]  in Journal of structural engineering > Vol. 137 N° 6 (Juin 2011) . - pp. 677-690 Titre : Displacement-based method of analysis for regular reinforced-concrete wall buildings : application to a full-scale 7-story building slice tested at UC–San Diego Type de document : texte imprimé Auteurs : Panagiotou, Marios, Auteur ; Restrepo, José I., Auteur Année de publication : 2011 Article en page(s) : pp. 677-690 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Displacement-based  design  Performance-based  design  Capacity  design  Load-bearing  walls  Lateral  forces  Reinforced  concrete  Seismic  design  Three-dimensional  effects  Higher-mode  effects Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper describes a displacement-based method of analysis for the performance-based seismic design of regular buildings with reinforced-concrete bearing walls acting as the lateral-force resisting system. The method considers two performance levels: immediate occupancy (IO) and life safety (LS), each anchored at a specific seismic hazard level. It explicitly accounts for the combined effects of inelastic first mode of response, kinematic system overstrength, and higher modes of response. Quantification of these effects is required to capacity-protect the structure and to ensure the intended performance. As an example, the method is applied to a full-scale 7-story reinforced-concrete building slice, built and tested on the George E. Brown Jr. Network for Earthquake Engineering Simulation Large Outdoor High-Performance Shake Table at the University of California–San Diego. The response of the test building largely verified the method discussed in this paper. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i6/p677_s1?isAuthorized=no [article] Displacement-based method of analysis for regular reinforced-concrete wall buildings : application to a full-scale 7-story building slice tested at UC–San Diego [texte imprimé] / Panagiotou, Marios, Auteur ; Restrepo, José I., Auteur . - 2011 . - pp. 677-690. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 6 (Juin 2011) . - pp. 677-690 Mots-clés : Displacement-based  design  Performance-based  design  Capacity  design  Load-bearing  walls  Lateral  forces  Reinforced  concrete  Seismic  design  Three-dimensional  effects  Higher-mode  effects Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper describes a displacement-based method of analysis for the performance-based seismic design of regular buildings with reinforced-concrete bearing walls acting as the lateral-force resisting system. The method considers two performance levels: immediate occupancy (IO) and life safety (LS), each anchored at a specific seismic hazard level. It explicitly accounts for the combined effects of inelastic first mode of response, kinematic system overstrength, and higher modes of response. Quantification of these effects is required to capacity-protect the structure and to ensure the intended performance. As an example, the method is applied to a full-scale 7-story reinforced-concrete building slice, built and tested on the George E. Brown Jr. Network for Earthquake Engineering Simulation Large Outdoor High-Performance Shake Table at the University of California–San Diego. The response of the test building largely verified the method discussed in this paper. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i6/p677_s1?isAuthorized=no

Dual-plastic hinge design concept for reducing higher-mode effects on high-rise cantilever wall buildings / Panagiotou, Marios in Earthquake engineering structural dynamics, Vol. 38 N° 12 (Octobre 2009) 

Public ISBD [article]  in Earthquake engineering structural dynamics > Vol. 38 N° 12 (Octobre 2009) . - pp. 1359-1380 Titre : Dual-plastic hinge design concept for reducing higher-mode effects on high-rise cantilever wall buildings Type de document : texte imprimé Auteurs : Panagiotou, Marios, Auteur ; Restrepo, José I., Auteur Article en page(s) : pp. 1359-1380 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Capacity  design;  High-rise  buildings;  Higher-mode  effects;  Near-fault  earthquakes;  Plastic  hinges;  Reinforced  concrete;  Seismic  design;  Structural  walls;  Tall  buildings Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : This paper explores the notion of detailing reinforced concrete structural walls to develop base and mid-height plastic hinges to better control the seismic response of tall cantilever wall buildings to strong shaking. This concept, termed here dual-plastic hinge (DPH) concept, is used to reduce the effects of higher modes of response in high-rise buildings. Higher modes can significantly increase the flexural demands in tall cantilever wall buildings. Lumped-mass Euler-Bernoulli cantilevers are used to model the case-study buildings examined in this paper. Buildings with 10, 20 and 40 stories are designed according to three different approaches: ACI-318, Eurocode 8 and the proposed DPH concept. The buildings are designed and subjected to three-specific historical strong near-fault ground motions. The investigation clearly shows the dual-hinge design concept is effective at reducing the effects of the second mode of response. An advantage of the concept is that, when combined with capacity design, it can result in relaxation of special reinforcing detailing in large portions of the walls. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe [article] Dual-plastic hinge design concept for reducing higher-mode effects on high-rise cantilever wall buildings [texte imprimé] / Panagiotou, Marios, Auteur ; Restrepo, José I., Auteur . - pp. 1359-1380. Génie Civil Langues : Anglais (eng) in Earthquake engineering structural dynamics > Vol. 38 N° 12 (Octobre 2009) . - pp. 1359-1380 Mots-clés : Capacity  design;  High-rise  buildings;  Higher-mode  effects;  Near-fault  earthquakes;  Plastic  hinges;  Reinforced  concrete;  Seismic  design;  Structural  walls;  Tall  buildings Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : This paper explores the notion of detailing reinforced concrete structural walls to develop base and mid-height plastic hinges to better control the seismic response of tall cantilever wall buildings to strong shaking. This concept, termed here dual-plastic hinge (DPH) concept, is used to reduce the effects of higher modes of response in high-rise buildings. Higher modes can significantly increase the flexural demands in tall cantilever wall buildings. Lumped-mass Euler-Bernoulli cantilevers are used to model the case-study buildings examined in this paper. Buildings with 10, 20 and 40 stories are designed according to three different approaches: ACI-318, Eurocode 8 and the proposed DPH concept. The buildings are designed and subjected to three-specific historical strong near-fault ground motions. The investigation clearly shows the dual-hinge design concept is effective at reducing the effects of the second mode of response. An advantage of the concept is that, when combined with capacity design, it can result in relaxation of special reinforcing detailing in large portions of the walls. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe

Shake-table test of a full-scale 7-story building slice / Panagiotou, Marios in Journal of structural engineering, Vol. 137 N° 6 (Juin 2011) 

Public ISBD [article]  in Journal of structural engineering > Vol. 137 N° 6 (Juin 2011) . - pp. 691-704 Titre : Shake-table test of a full-scale 7-story building slice : phase1: rectangular wall Type de document : texte imprimé Auteurs : Panagiotou, Marios, Auteur ; Restrepo, José I., Auteur ; Conte, Joel P., Auteur Année de publication : 2011 Article en page(s) : pp. 691-704 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Load-bearing  walls  Displacement-based  design  Capacity  design  Lateral  forces  Earthquakes  Shake-table  testing  Three-dimensional  effects  Higher-mode  effects Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper is a companion to “Displacement-Based Method of Analysis for Regular Reinforced-Concrete Wall Buildings: Application to a Full-Scale 7-Story Building Slice Tested at UC–San Diego” and presents key results obtained from a full-scale 7-story reinforced concrete building slice built and tested on the George E. Brown Jr. Network for Earthquake Engineering Simulation Large Outdoor High-Performance Shake Table at the University of California, San Diego. The building was tested in two phases. This paper discusses the main test results obtained during Phase I of the experimental program. In this phase, the building had a rectangular load-bearing wall acting as the main lateral force–resisting element. The building was subjected to four historical California input ground motions, including the strong-intensity near-fault Sylmar record, which induced significant nonlinear response. The test addressed the dynamic response of the building, including the interaction between the walls, the slabs, and the gravity system as well as four issues relevant to construction optimization: (1) reduction in the longitudinal reinforcement; (2) use of a single curtain of reinforcement to transfer shear; (3) constrain of plasticity in the first level of the wall using capacity design; and (4) use of resistance-welded reinforcement in the boundary elements of the first level of the walls. The building responded very satisfactorily to the ground motions reproduced by the shake table and met all performance objectives. The effects of kinematic system overstrength and higher modes of response in the experimental response were important; this verified to a large extent the displacement-based method of analysis presented in the companion paper. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i6/p691_s1?isAuthorized=no [article] Shake-table test of a full-scale 7-story building slice : phase1: rectangular wall [texte imprimé] / Panagiotou, Marios, Auteur ; Restrepo, José I., Auteur ; Conte, Joel P., Auteur . - 2011 . - pp. 691-704. Génie Civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 137 N° 6 (Juin 2011) . - pp. 691-704 Mots-clés : Load-bearing  walls  Displacement-based  design  Capacity  design  Lateral  forces  Earthquakes  Shake-table  testing  Three-dimensional  effects  Higher-mode  effects Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper is a companion to “Displacement-Based Method of Analysis for Regular Reinforced-Concrete Wall Buildings: Application to a Full-Scale 7-Story Building Slice Tested at UC–San Diego” and presents key results obtained from a full-scale 7-story reinforced concrete building slice built and tested on the George E. Brown Jr. Network for Earthquake Engineering Simulation Large Outdoor High-Performance Shake Table at the University of California, San Diego. The building was tested in two phases. This paper discusses the main test results obtained during Phase I of the experimental program. In this phase, the building had a rectangular load-bearing wall acting as the main lateral force–resisting element. The building was subjected to four historical California input ground motions, including the strong-intensity near-fault Sylmar record, which induced significant nonlinear response. The test addressed the dynamic response of the building, including the interaction between the walls, the slabs, and the gravity system as well as four issues relevant to construction optimization: (1) reduction in the longitudinal reinforcement; (2) use of a single curtain of reinforcement to transfer shear; (3) constrain of plasticity in the first level of the wall using capacity design; and (4) use of resistance-welded reinforcement in the boundary elements of the first level of the walls. The building responded very satisfactorily to the ground motions reproduced by the shake table and met all performance objectives. The effects of kinematic system overstrength and higher modes of response in the experimental response were important; this verified to a large extent the displacement-based method of analysis presented in the companion paper. DEWEY : 624.17 ISSN : 0733-9445 En ligne : http://ascelibrary.org/sto/resource/1/jsendh/v137/i6/p691_s1?isAuthorized=no