Refinement of Strut-and-Tie Model for Reinforced Concrete Deep Beams
Deep beams are commonly used in tall buildings, offshore structures, and foundations. According to many codes and standards, strut-and-tie model (STM) is recommended as a rational approach for deep beam analyses. This research focuses on the STM recom- mended by ACI 318-11 and AASHTO LRFD and use...
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my-inti-eprints.292016-09-14T08:49:14Z http://eprints.intimal.edu.my/29/ Refinement of Strut-and-Tie Model for Reinforced Concrete Deep Beams Panjehpour, Mohammad Chai, Hwa Kian Voo, Yen Lei TA Engineering (General). Civil engineering (General) Deep beams are commonly used in tall buildings, offshore structures, and foundations. According to many codes and standards, strut-and-tie model (STM) is recommended as a rational approach for deep beam analyses. This research focuses on the STM recom- mended by ACI 318-11 and AASHTO LRFD and uses experimental results to modify the strut effectiveness factor in STM for reinforced concrete (RC) deep beams. This study aims to refine STM through the strut effectiveness factor and increase result accuracy. Six RC deep beams with different shear span to effective-depth ratios (a/d) of 0.75, 1.00, 1.25, 1.50, 1.75, and 2.00 were experimentally tested under a four-point bending set-up. The ulti- mate shear strength of deep beams obtained from non-linear finite element modeling and STM recommended by ACI 318-11 as well as AASHTO LRFD (2012) were compared with the experimental results. An empirical equation was proposed to modify the principal tensile strain value in the bottle-shaped strut of deep beams. The equation of the strut effectiveness factor from AASHTTO LRFD was then modified through the aforementioned empirical equation. An investigation on the failure mode and crack propagation in RC deep beams subjected to load was also conducted. 2015-06-25 Article PeerReviewed text en http://eprints.intimal.edu.my/29/1/Refinement%20of%20Strut-and-Tie%20Model%20for.PDF Panjehpour, Mohammad and Chai, Hwa Kian and Voo, Yen Lei (2015) Refinement of Strut-and-Tie Model for Reinforced Concrete Deep Beams. PLoS ONE, 10 (6). http://dx.doi.org/10.1371/journal.pone.0130734 10.1371/journal.pone.0130734 |
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TA Engineering (General). Civil engineering (General) Panjehpour, Mohammad Chai, Hwa Kian Voo, Yen Lei Refinement of Strut-and-Tie Model for Reinforced Concrete Deep Beams |
description |
Deep beams are commonly used in tall buildings, offshore structures, and foundations.
According to many codes and standards, strut-and-tie model (STM) is recommended as a
rational approach for deep beam analyses. This research focuses on the STM recom-
mended by ACI 318-11 and AASHTO LRFD and uses experimental results to modify the
strut effectiveness factor in STM for reinforced concrete (RC) deep beams. This study aims
to refine STM through the strut effectiveness factor and increase result accuracy. Six RC
deep beams with different shear span to effective-depth ratios (a/d) of 0.75, 1.00, 1.25,
1.50, 1.75, and 2.00 were experimentally tested under a four-point bending set-up. The ulti-
mate shear strength of deep beams obtained from non-linear finite element modeling and
STM recommended by ACI 318-11 as well as AASHTO LRFD (2012) were compared with
the experimental results. An empirical equation was proposed to modify the principal tensile
strain value in the bottle-shaped strut of deep beams. The equation of the strut effectiveness
factor from AASHTTO LRFD was then modified through the aforementioned empirical
equation. An investigation on the failure mode and crack propagation in RC deep beams
subjected to load was also conducted. |
format |
Article |
author |
Panjehpour, Mohammad Chai, Hwa Kian Voo, Yen Lei |
author_facet |
Panjehpour, Mohammad Chai, Hwa Kian Voo, Yen Lei |
author_sort |
Panjehpour, Mohammad |
title |
Refinement of Strut-and-Tie Model for
Reinforced Concrete Deep Beams |
title_short |
Refinement of Strut-and-Tie Model for
Reinforced Concrete Deep Beams |
title_full |
Refinement of Strut-and-Tie Model for
Reinforced Concrete Deep Beams |
title_fullStr |
Refinement of Strut-and-Tie Model for
Reinforced Concrete Deep Beams |
title_full_unstemmed |
Refinement of Strut-and-Tie Model for
Reinforced Concrete Deep Beams |
title_sort |
refinement of strut-and-tie model for
reinforced concrete deep beams |
publishDate |
2015 |
url |
http://eprints.intimal.edu.my/29/1/Refinement%20of%20Strut-and-Tie%20Model%20for.PDF http://eprints.intimal.edu.my/29/ http://dx.doi.org/10.1371/journal.pone.0130734 |
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