FINITE ELEMENT ANALYSIS OF SHEAR DEFICIENT LARGE SIZE REINFORCED CONCRETE BEAMS

The shear failure of reinforced concrete beams considered as a very complex fracture phenomenon for which a purely mathematical approach is not possible at present. However, detailed modeling of the fracture mechanism is not necessary for establishing the general form of the size effect. This paper...

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Main Author: Mohammed Sh. Mahmood
Format: Article
Language:English
Published: University of Diyala 2010-12-01
Series:Diyala Journal of Engineering Sciences
Subjects:
Online Access:https://djes.info/index.php/djes/article/view/660
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author Mohammed Sh. Mahmood
author_facet Mohammed Sh. Mahmood
author_sort Mohammed Sh. Mahmood
collection DOAJ
description The shear failure of reinforced concrete beams considered as a very complex fracture phenomenon for which a purely mathematical approach is not possible at present. However, detailed modeling of the fracture mechanism is not necessary for establishing the general form of the size effect. This paper reports the details of the finite element analysis using "ANSYS" program for eight large-size reinforced concrete beams. The beams were analyzed without web reinforcements to evaluate the nominal shear strength provided by the concrete. The main variables included in the study are the a/d, concrete compressive strength , and the type (conventional or high-strength steel) and amount of the longitudinal steel reinforcement. The finite element models are developed using a smeared cracking approach for reinforced concrete. The concrete is modeled using "SOLID65"eight node brick element, which is capable of simulating the cracking and crushing behavior of brittle materials. The steel reinforcement has been modeled discreetly using "LINK8" 3D spar element and it has two nodes. A comparison between the finite element analysis results, namely, loads, deflections and cracking behavior and the available experimental results were made and good agreement was obtained. Results show that the use of high strength steel as a longitudinal reinforcement improves the shear strength and post cracking tensile stiffness of the concrete
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spelling doaj.art-b87e5de72bac4172bfe8d93b2faca4952022-12-22T02:32:14ZengUniversity of DiyalaDiyala Journal of Engineering Sciences1999-87162616-69092010-12-0132FINITE ELEMENT ANALYSIS OF SHEAR DEFICIENT LARGE SIZE REINFORCED CONCRETE BEAMSMohammed Sh. Mahmood0Engineering College , Diyala University The shear failure of reinforced concrete beams considered as a very complex fracture phenomenon for which a purely mathematical approach is not possible at present. However, detailed modeling of the fracture mechanism is not necessary for establishing the general form of the size effect. This paper reports the details of the finite element analysis using "ANSYS" program for eight large-size reinforced concrete beams. The beams were analyzed without web reinforcements to evaluate the nominal shear strength provided by the concrete. The main variables included in the study are the a/d, concrete compressive strength , and the type (conventional or high-strength steel) and amount of the longitudinal steel reinforcement. The finite element models are developed using a smeared cracking approach for reinforced concrete. The concrete is modeled using "SOLID65"eight node brick element, which is capable of simulating the cracking and crushing behavior of brittle materials. The steel reinforcement has been modeled discreetly using "LINK8" 3D spar element and it has two nodes. A comparison between the finite element analysis results, namely, loads, deflections and cracking behavior and the available experimental results were made and good agreement was obtained. Results show that the use of high strength steel as a longitudinal reinforcement improves the shear strength and post cracking tensile stiffness of the concrete https://djes.info/index.php/djes/article/view/660Large Size Reinforced Concrete BeamsFinite Element MethodHigh Strength Steel
spellingShingle Mohammed Sh. Mahmood
FINITE ELEMENT ANALYSIS OF SHEAR DEFICIENT LARGE SIZE REINFORCED CONCRETE BEAMS
Diyala Journal of Engineering Sciences
Large Size Reinforced Concrete Beams
Finite Element Method
High Strength Steel
title FINITE ELEMENT ANALYSIS OF SHEAR DEFICIENT LARGE SIZE REINFORCED CONCRETE BEAMS
title_full FINITE ELEMENT ANALYSIS OF SHEAR DEFICIENT LARGE SIZE REINFORCED CONCRETE BEAMS
title_fullStr FINITE ELEMENT ANALYSIS OF SHEAR DEFICIENT LARGE SIZE REINFORCED CONCRETE BEAMS
title_full_unstemmed FINITE ELEMENT ANALYSIS OF SHEAR DEFICIENT LARGE SIZE REINFORCED CONCRETE BEAMS
title_short FINITE ELEMENT ANALYSIS OF SHEAR DEFICIENT LARGE SIZE REINFORCED CONCRETE BEAMS
title_sort finite element analysis of shear deficient large size reinforced concrete beams
topic Large Size Reinforced Concrete Beams
Finite Element Method
High Strength Steel
url https://djes.info/index.php/djes/article/view/660
work_keys_str_mv AT mohammedshmahmood finiteelementanalysisofsheardeficientlargesizereinforcedconcretebeams