Finite Element Analysis of Bending Resistance for RC Beams Strengthened with AFRP Sheets

Zeng, Qing Dun; Zhou, Yong Lu

doi:10.4028/www.scientific.net/AMM.69.1

Paper Titles

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Finite Element Analysis of Bending Resistance for RC Beams Strengthened with AFRP Sheets
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HomeApplied Mechanics and MaterialsAdvances in Material Engineering and Mechanical...Finite Element Analysis of Bending Resistance for...

Finite Element Analysis of Bending Resistance for RC Beams Strengthened with AFRP Sheets

Abstract:

In order to reveal the failure properties of AFRP sheet-reinforced beams under 4-point bending, a 3-D finite element model of RC beam, including rebar, interface and sheet elements, was established by using MIDAS FEA finite element software. The stress and displacement of each of components in beam were solved by cycling calculations. In terms of Code for Design of Concrete Structures, the initial cracking loads of RC beams strengthened with prestressed and non-prestressed AFRP were further obtained, which are relatively conformed to the existing experiment. The results show that, compared with the beams strengthened with prestressed and non-prestressed AFRP, the initial cracking load of the former has considerable increase.

Info:

Periodical:

Applied Mechanics and Materials (Volume 69)

Main Theme:

Advances in Material Engineering and Mechanical Engineering

Edited by:

Liang Gao

Pages:

1-5

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.69.1

Citation:

Q. D. Zeng and Y. L. Zhou, "Finite Element Analysis of Bending Resistance for RC Beams Strengthened with AFRP Sheets", Applied Mechanics and Materials, Vol. 69, pp. 1-5, 2011

Online since:

July 2011

Authors:

Qing Dun Zeng, Yong Lu Zhou

Keywords:

4-Point-Bending, AFRP Sheet, Cracking Load, Finite Element Model (FEM), RC Beam, Reinforcement

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References

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Paper TitlePages

Experimental Study on Flexural Behavior of Recycled Coarse Aggregate Concrete Beam

Authors: Wen Hui Bai, Bin Xiang Sun

Abstract: In order to investigate flexural behavior of simply-supported beam using recycled coarse aggregate concrete, the difference of the component normal section stress distortion performance and failure characteristic between the recycled concrete beam and the normal concrete beam is researched. The approaches of testing the flexural behavior of 6 recycled course aggregate beams with the same section size, different replacement ratio of recycled coarse aggregate (0%, 50%, 70% and 100%) and different percentage reinforcement (0.68%, 0.89% and 1.13%). Based on the experimental the following conclusions are draw. There are also 4 phases of elasticity, cracking, yield and ultimate during the stress course of recycled concrete beam component normal section stress; the average strain measured on cross-section obliges to the plane section assumption; the characteristics of stress distortion and destruction of recycled concrete beam are basically the same as those of the normal concrete beam. Under same conditions, the cracking moment and the ultimate flexural carrying capability of recycled concrete beam is almost the same as those of normal concrete beam. The deformation of recycled concrete beam is larger than concrete beam. The conclusion of the paper is that it is still feasible to calculate the ultimate bending moment, cracking moment, and the biggest crack width of recycled concrete beam according to the formula in China Concrete Structure Design Code, but the deflection formula needs to be adjusted.

543

Stiffness Revising to Recycled Course Aggregate Reinforced Concrete Beams under Short-Term Loading

Authors: Wen Hui Bai

Abstract: This paper mainly studies the deflection under short-term loading of recycled course aggregate reinforced concrete beam is calculated by using of the formula of short-dated rigidity in code for design of concrete structures. According to testing the flexural performance of 6 recycled course aggregate beams with the same section size, different replacement ratio of recycled coarse aggregate of 0%, 50%, 70%, 100% respectively and different percentage reinforcement of 0.68%, 0.89%, 1.13% respectively, analyzes relation between deflection and replacement ratio of recycled coarse aggregate, deflection and percentage reinforcement, compare measured value and calculated value using of current codes and make statistical analysis this data . By regressing and analyzing the experimental data from literature, supplied short-dated rigidity modified formula of recycled course aggregate beam. The calculation results are in good agreement with the experimental data. The formula of short-dated rigidity can accurately calculate deflection under short-term loading of recycled course aggregate reinforced concrete beam, and can be referenced in engineering practice and correlative regulations.

1443

Static Experimental Study on Composite Beam with Concrete filled Steel Tubular Truss

Authors: Jing Feng Wang, Bo Wang, Zhong Ming Zheng

Abstract: To research the mechanical behaviour of the novel composite beam with concrete filled steel tubular (CFST) truss, an experimental study of simple composite beam subjected to monotonic loading is described. A test program was developed to investigate failure models and working mechanism of the typed composite structure. Load-deformation curves, deflection regulation, strain distribution of beam were analyzed and asserted. The experimental and analytic results show that the typed composite beam has high strength, excellent ductility, and torsion performance. It can be used the large span bridges and high rise buildings.

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