Flexural behavior of ungrouted post-tensioned concrete masonry beams with unbonded bars

John M. García, Ricardo L. Bonett, Arturo E. Schultz, Julian Carrillo, Christian Ledezma

Resultado de la investigación: Contribución a una revistaArtículoInvestigaciónrevisión exhaustiva

Resumen

Precast and post-tensioned systems increase the efficiency of masonry beams in terms of labor and time of construction. This study is aimed at evaluating the flexural behavior of ungrouted post-tensioned concrete masonry beams, with eccentric bars, and the effect of the main design parameters on their structural performance when subjected to monotonic and unidirectional cyclic loading until failure. All beams failed in flexure by crushing of the masonry in the compression region. Masonry strength was the design parameter that had the most significant effect on the load-deflection behavior of post-tensioned masonry beams. The test results showed that the measured nonlinear load-deflection behavior and the correlation between bar stress increase and midspan deflection can be estimated using a multi-linear relationship. Beams tested under monotonic and unidirectional cyclic loading exhibited comparable load-deflection envelope response.

Idioma originalInglés
Páginas (desde-hasta)210-221
Número de páginas12
PublicaciónConstruction and Building Materials
Volumen203
DOI
EstadoPublicada - 10 abr 2019

Huella dactilar

Concretes
Crushing
Loads (forces)
Personnel

Palabras clave

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    title = "Flexural behavior of ungrouted post-tensioned concrete masonry beams with unbonded bars",
    abstract = "Precast and post-tensioned systems increase the efficiency of masonry beams in terms of labor and time of construction. This study is aimed at evaluating the flexural behavior of ungrouted post-tensioned concrete masonry beams, with eccentric bars, and the effect of the main design parameters on their structural performance when subjected to monotonic and unidirectional cyclic loading until failure. All beams failed in flexure by crushing of the masonry in the compression region. Masonry strength was the design parameter that had the most significant effect on the load-deflection behavior of post-tensioned masonry beams. The test results showed that the measured nonlinear load-deflection behavior and the correlation between bar stress increase and midspan deflection can be estimated using a multi-linear relationship. Beams tested under monotonic and unidirectional cyclic loading exhibited comparable load-deflection envelope response.",
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    Flexural behavior of ungrouted post-tensioned concrete masonry beams with unbonded bars. / García, John M.; Bonett, Ricardo L.; Schultz, Arturo E.; Carrillo, Julian; Ledezma, Christian.

    En: Construction and Building Materials, Vol. 203, 10.04.2019, p. 210-221.

    Resultado de la investigación: Contribución a una revistaArtículoInvestigaciónrevisión exhaustiva

    TY - JOUR

    T1 - Flexural behavior of ungrouted post-tensioned concrete masonry beams with unbonded bars

    AU - García, John M.

    AU - Bonett, Ricardo L.

    AU - Schultz, Arturo E.

    AU - Carrillo, Julian

    AU - Ledezma, Christian

    PY - 2019/4/10

    Y1 - 2019/4/10

    N2 - Precast and post-tensioned systems increase the efficiency of masonry beams in terms of labor and time of construction. This study is aimed at evaluating the flexural behavior of ungrouted post-tensioned concrete masonry beams, with eccentric bars, and the effect of the main design parameters on their structural performance when subjected to monotonic and unidirectional cyclic loading until failure. All beams failed in flexure by crushing of the masonry in the compression region. Masonry strength was the design parameter that had the most significant effect on the load-deflection behavior of post-tensioned masonry beams. The test results showed that the measured nonlinear load-deflection behavior and the correlation between bar stress increase and midspan deflection can be estimated using a multi-linear relationship. Beams tested under monotonic and unidirectional cyclic loading exhibited comparable load-deflection envelope response.

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    KW - Beams

    KW - Eccentric bar

    KW - Flexural behavior

    KW - Masonry

    KW - Post-tensioning

    KW - Unbonded

    KW - Ungrouted

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