Seismic Performance of Self-Centering Structural Walls Incorporating Energy Dissipators

Restrepo, José I.; Rahman, Amar

doi:10.1061/(asce)0733-9445(2007)133:11(1560)

Cited by 265 publications

(126 citation statements)

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“…In order to improve the lateral capability of a rocking unreinforced wall under inplane seismic loading, unbonded prestressed technology has been incorporated in masonry walls to provide self-centering behavior [8,9]. Unbonded prestressed tendons were applied in the center of a concrete wall or a masonry wall in some tests, such as tests conducted by Restrepo et al [10][11][12]. Several schematic diagrams and some simple information of these tests are shown in Figures 2(a)-2(c).…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on a Self-Centering Earthquake-Resistant Masonry Pier with a Structural Concrete Column

Niu

Zhang

2017

Advances in Materials Science and Engineering

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This paper proposes a slotting construction strategy to avoid shear behavior of multistory masonry buildings. The aspect ratio of masonry piers increases via slotting between spandrels and piers, so that the limit state of piers under an earthquake may be altered from shear to rocking. Rocking piers with a structural concrete column (SCC) form a self-centering earthquake-resistant system. The in-plane lateral rocking behavior of masonry piers subjected to an axial force is predicted, and an experimental study is conducted on two full-scale masonry piers with an SCC, which consist of a slotting pier and an original pier. Meanwhile, a comparison of the rocking modes of masonry piers with an SCC and without an SCC was conducted in the paper. Experimental verification indicates that the slotting strategy achieves a change of failure modes from shear to rocking, and this resistant system with an SCC incorporates the self-centering and high energy dissipation properties. For the slotting pier, a lateral story drift ratio of 2.5% and a high displacement ductility of approximately 9.7 are obtained in the test, although the lateral strength decreased by 22.3% after slotting. The predicted lateral strength of the rocking pier with an SCC has a margin of error of 5.3%.

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Section: Introductionmentioning

confidence: 99%

“…If rocking walls contain special energy dissipators, such as those shown in Figures 2(e) and 2(f), then a full hysteresis loop would be obtained [10].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on a Self-Centering Earthquake-Resistant Masonry Pier with a Structural Concrete Column

Niu

Zhang

2017

Advances in Materials Science and Engineering

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“…Experimental research was conducted on single rocking and hybrid wall panels under both quasi-static [6][7][8] and dynamic loading [9] proving the good performance of these systems if detailed appropriately. The dynamic interaction between rocking and hybrid walls and the rest of the structure was investigated during the DSDM project [10] in which shake table tests were conducted on a three story half-scale precast concrete structure whose lateral force resisting system consisted entirely on rocking and hybrid walls [11,12].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modeling of “Rocking Walls”

Belleri¹,

Torquati²,

Riva³

2014

Proceedings of the 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Muro autocentrado y comportamiento histerético idealizado del sistema híbrido. (Restrepo y Rahman, 2007;Pampanin, 2005) Desde la década anterior se ha estudiado el comportamiento de muros de concreto prefabricado con tendones de postensado no adherido (Kurama et al, 1999;Holden et al, 2003;Restrepo y Rahman, 2007). Holden et al (2003) ensayaron muros a escala 1:2 con cargas laterales cíclicas reversibles y compararon su comportamiento con el de muros de concreto reforzado.…”

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“…Estas investigaciones mostraron las características de autocentrado y disminución de los desplazamientos residuales del sistema con postensado no adherido. Restrepo y Rahman (2007) ensayaron muros a escala 1:2 con cargas laterales cíclicas reversibles y compararon el comportamiento registrado en especímenes con postensado no adherido y diferentes proporciones de barras disipadoras de acero dúctil para proveer de disipación de energía; asimismo, propusieron recomendaciones para el diseño de muros no acoplados.…”

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Ensayes en Mesa Vibradora De Edificios Miniatura Con Muros Estructurales De Concreto Convencionales Y Autocentrados

Salinas-Basualdo¹,

Rodrı́guez²,

Sánchez³

2013

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RESUMENEste trabajo describe los resultados de ensayes en mesa vibradora de tres especímenes miniatura de cinco pisos con sistemas muro-marco, diseñados por sismo con criterios semejantes a los empleados para edificios con sistemas duales convencionales. Un espécimen tuvo un muro estructural convencional y dos especímenes tuvieron muros estructurales autocentrados. Los muros autocentrados fueron de concreto presforzado con tendones de postensado no adherido, y barras de refuerzo de acero ASTM A615 entre la base del muro y la cimentación, diseñadas como elementos disipadores de energía. Se desarrollaron modelos de análisis estructural que fueron calibrados para reproducir los resultados experimentales de los especímenes ensayados, obteniéndose de estos análisis resultados comparables a los obtenidos en las mediciones experimentales. Los ensayos mostraron que los especímenes muro-marco con muros autocentrados presentaron en general un desempeño semejante al observado en el espécimen muro-marco con muro convencional. Una mayor participación de los muros autocentrados en la respuesta total llevó a un incremento en la sobrerresistencia y una reducción tanto de las distorsiones residuales en la estructura como de las deformaciones residuales en las secciones críticas de los elementos de los marcos.Palabras clave: concreto reforzado; muros estructurales; muros autocentrados; ensayos en mesa vibradora; análisis dinámico no lineal; diseño sismo-resistente ABSTRACT This paper describes results of shaking table tests of three five-story miniature buildings with wallframe systems, designed with seismic design criteria similar to those used in conventional wallframe dual systems. One of the specimens had one conventional structural wall and the other two had self-centering structural walls. Self-centering walls were built with unbonded post-tensioned prestressed concrete and energy dissipators of ASTM A615 steel between the base and the wall foundation. Analytical models were developed for structural analysis, which were calibrated to reproduce the experimental results. Predicted response using the analytical models was comparable to measured response. The tests showed that the specimens with self-centering wall-frame dual systems had in general a behavior similar to that observed in the specimen with a conventional wallframe system. In addition, it was observed that an increase in the participation of the self-centering structural walls in the total seismic response led to an increase in overstrength and to a decrease in Artículo recibido el 21 de diciembre de 2012 y aprobado para su publicación el 19 de agosto de 2013. Se aceptarán comentarios y/o discusiones hasta cinco meses después de su publicación.(1)

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Seismic Performance of Self-Centering Structural Walls Incorporating Energy Dissipators

Cited by 265 publications

References 10 publications

Experimental Study on a Self-Centering Earthquake-Resistant Masonry Pier with a Structural Concrete Column

Experimental Study on a Self-Centering Earthquake-Resistant Masonry Pier with a Structural Concrete Column

Finite Element Modeling of “Rocking Walls”

Ensayes en Mesa Vibradora De Edificios Miniatura Con Muros Estructurales De Concreto Convencionales Y Autocentrados

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Seismic Performance of Self-Centering Structural Walls Incorporating Energy Dissipators

Cited by 265 publications

References 10 publications

Experimental Study on a Self-Centering Earthquake-Resistant Masonry Pier with a Structural Concrete Column

Experimental Study on a Self-Centering Earthquake-Resistant Masonry Pier with a Structural Concrete Column

Finite Element Modeling of “Rocking Walls”

Ensayes en Mesa Vibradora De Edificios Miniatura Con Muros Estructurales De Concreto Convencionales Y Autocentrados

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Finite Element Modeling of “Rocking Walls”