# Optimum shear strengthening of reinforced concrete beams

### Optimum Shear Strengthening of Reinforced Concrete Beams ...

1 Optimum Shear Strengthening of Reinforced Concrete Beams with Prestressed Carbon Fibre Reinforced Polymer (CFRP) straps Hiran D. Yapa Dr. Janet M. Lees

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A parametric study demonstrated that the concrete strength, internal shear link locations, beam depth, and shear span to depth ratio of the beam do not significantly influence the optimum strengthening configurations for the CFRP strap system.

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Mar 11, 2021 shear deficient reinforced concrete (RC) structures. The strengthening system is associated with. a number of parameters including the number of straps, strap locations, strap stiffness, and strap. prestress. The initial goal of this research was to identify the optimum values for these.

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Optimum Shear Strengthening of Reinforced Concrete Beams Using an Un-bonded CFRP Strap Shear Retrofitting System Maithree C. Kurukulasuriya, Hasini S. Rathnayake, Hiran D. Yapa

get price### Predicting the Optimum Shear Capacity of Reinforced ...

Jan 01, 2020 Shear Strengthening of Reinforced Concrete Beams Using Externally Applied Composites Fabrics ACI Structural Journal , 92 ( 3 ) ( 1995 ) , pp. 295 - 303 DOI: 10.14359/1130

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A parametric study demonstrated that the concrete strength, internal shear link locations, beam depth, and shear span to depth ratio of the beam do not significantly influence the optimum strengthening configurations for the CFRP strap system.

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ADVANCED COMPOSITES IN CONSTRUCTION 2017 107 Optimum Shear Strengthening of Reinforced Concrete Beams Using an Un-bonded CFRP Strap Shear Retrofitting System

get price### British Library EThOS: Optimum shear strengthening of ...

A parametric study demonstrated that the concrete strength, internal shear link locations, beam depth, and shear span to depth ratio of the beam do not significantly influence the optimum strengthening configurations for the CFRP strap system.

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improve the flexural rigidity of the beams. [14] Barnes, R. A., and Mays, G. C. (2006a). “Strengthening of 5. The numerical analysis presented was able to predict the reinforced concrete beams in shear by the use of externally ultimate shear strength of plate-bonded beams well.

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Mar 11, 2015 Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement Denise Ferreira Department of Construction Engineering, Universitat Politècnica de Catalunya (UPC) - Barcelona TECH, Campus Nord, C/Jordi Girona 1-3, Mod C1, 08034 Barcelona, Spain Correspondence [email protected]

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Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement, Structure and Infrastructure Engineering, vol. 12, num. 3, p. 394-410 (2015).

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Strengthening reinforced concrete (RC) elements critical to shear with prestressed transversal reinforcement can be an efficient method to increase the shear resistance of structures, allowing the development of the full flexural capacity. However, research on the performance of this technique is very limited, and methods for designing the optimum amount of prestressed transversal ...

get price### Shear Strengthening of Reinforced Concrete Beams Using ...

Apr 02, 2005 The CFRP system can significantly increase the serviceability, ductility, and ultimate shear strength of a concrete beam; thus, restoring beam shear strength by using CFRP is a highly effective technique. An analysis and design method for shear strengthening of externally bonded

get price### MINIMUM SHEAR REINFORCEMENT FOR OPTIMUM

the ultimate shear strength [15] is as shown in Eq. 6, bd 2 a/d V v 1/6 3 cr u = ρ (6) The shear strength of concrete for the reinforced concrete members as per the ACI code [10] is, bd 0.17 f V ' c c = γ (7) Taking the lower bound value for the tensile strength of

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Shear strengthening of reinforced concrete beams with PBO ... Oct 01, 2015 The work analyses the functioning of reinforced concrete beams which are shear reinforced with FRCM (Fibre Reinforced Cementitious Matrix) composite mesh on mineral mortar.The analysis of previous tests provides an overview on the efficiency of the related FRP (Fibre Reinforced Polymers) system used for strengthening ...

get price### Shear strengthening of continuous reinforced concrete T ...

May 01, 2009 1.. IntroductionExternal shear strengthening for reinforced concrete beams can be classified into two groups; bonded type and unbonded type. Many effective shear strengthening procedures , , , , by externally bonding steel plates or high strength non-metallic fiber laminates to concrete surfaces, have been developed. However, a few drawbacks were also identified in the

get price### Shear Strength of Reinforced Concrete Beams per ACI 318-02

Shear Strength of Reinforced Concrete Beams per ACI 318-02 Course Content 1. Introduction In a simple beam subjected to bending, the fibers above the neutral axis are in compression, whereas tensile stresses occur in the fibers below this axis.

get price### Minimum shear reinforcement for optimum ductility of ...

Aug 04, 2016 Minimum shear reinforcement for optimum ductility of reinforced concrete beams ... [15] is as shown in Eq. 6, bd 2 a/d vV 1/6 3 ucr (6) The shear strength of concrete for the reinforced concrete members as per the ACI code [10] is, bd f0.17 V ' c c (7) Taking the lower bound value for the tensile strength of concrete as a function of the ...

get price### Cost-Optimum Design for Shear Reinforced Concrete Beams

Jan 01, 1999 The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete

get price### Comparison of Main Models for Size Effect on Shear ...

Comparison of Main Models for Size Effect on Shear Strength of Reinforced and Prestressed Concrete Beams Qiang Yu, Jia-Liang Le, Mija H. Hubler, Roman Wendner, Gianluca Cusatis, and Zdenek P. Bažant. Center for Sustainable Engineering of Geological and Infrastructure Materials (SEGIM) Structural Engineering Report No. 15-03/936x

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Mar 11, 2015 Shear strengthening of reinforced concrete beams by means of vertical prestressed reinforcement Denise Ferreira Department of Construction Engineering, Universitat Politècnica de Catalunya (UPC) - Barcelona TECH, Campus

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Strengthening reinforced concrete (RC) elements critical to shear with prestressed transversal reinforcement can be an efficient method to increase the shear resistance of structures, allowing the development of the full flexural capacity. However, research on the performance of this technique is very limited, and methods for designing the optimum amount of prestressed transversal ...

get price### MINIMUM SHEAR REINFORCEMENT FOR OPTIMUM

the ultimate shear strength [15] is as shown in Eq. 6, bd 2 a/d V v 1/6 3 cr u = ρ (6) The shear strength of concrete for the reinforced concrete members as per the ACI code [10] is, bd 0.17 f V ' c c = γ (7) Taking the lower bound value for the tensile strength of

get price### Shear strengthening of reinforced concrete beams with high ...

Jul 23, 2020 The use of high-strength SHCC in shear strengthening for RC beams with stirrups has not been studied. In this study, we investigate a simple and effective method for the shear strengthening of RC beams with high-strength SHCC. Reinforced concrete beams at a shear span-to-depth ratio (S/d) of 1.5:1 and 2.5:1 were cast. High-strength SHCC were ...

get price### Shear strengthening of reinforced concrete T-beams using ...

Jan 01, 2020 Based on the results of this study, anchor dowel diameter of 14 mm was found optimum for an anchor embedment depth of 85 mm. Previous article in issue; Next article in ... pp. 1â€“9. Lee, D. H., Han, S. J., Kim, K. S., LaFave, J. M., 2017. Shear strength of reinforced concrete beams strengthened in shear using externally-bonded FRP ...

get price### Minimum shear reinforcement for optimum ductility of ...

Aug 04, 2016 Minimum shear reinforcement for optimum ductility of reinforced concrete beams ... [15] is as shown in Eq. 6, bd 2 a/d vV 1/6 3 ucr (6) The shear strength of concrete for the reinforced concrete members as per the ACI code [10] is, bd f0.17 V ' c c (7) Taking the lower bound value for the tensile strength of concrete as a function of the ...

get price### shear strengthening of reinforced concrete beams with

Shear strengthening of reinforced concrete beams with PBO ... Oct 01, 2015 The work analyses the functioning of reinforced concrete beams which are shear reinforced with FRCM (Fibre Reinforced Cementitious Matrix) composite mesh on mineral mortar.The analysis of previous tests provides an overview on the efficiency of the related FRP (Fibre Reinforced Polymers) system used for strengthening ...

get price### Shear Strengthening of Reinforced Concrete Beams with ...

Shear Strengthening of Reinforced Concrete Beams with External Steel Bars and with CRFP C. R. LLopiz IMERIS, Facultad de Ingeniería, UNCuyo, Mendoza F. J. Crisafulli IMERIS, Facultad de Ingeniería, UNCuyo, Mendoza E. J. Vega IMERIS, Facultad de

get price### Comparison of Main Models for Size Effect on Shear ...

Comparison of Main Models for Size Effect on Shear Strength of Reinforced and Prestressed Concrete Beams Qiang Yu, Jia-Liang Le, Mija H. Hubler, Roman Wendner, Gianluca Cusatis, and Zdenek P. Bažant. Center for Sustainable Engineering of Geological and Infrastructure Materials (SEGIM) Structural Engineering Report No. 15-03/936x

get price### Strengthening of reinforced concrete structures

Beam-column joints being the crucial components, often govern the seismic behavior of a non-seismically designed reinforced concrete structure. The primary reason for the vulnerability of the beam-column joints is the high shear force that comes into the joint core due to high bending moments of opposite signs in the beams and columns framing ...

get price### STUDY ON THE OPTIMUM LOCATION OF SHEAR WALL IN

Reinforced concrete multi-storey building to resist both the vertical and horizontal load without considering a shear wall, but the problem is beam and column sizes are become quite heavy, steel quantity requirement is also in large amount thus there is lot of congestion takes place at joints and it is difficult to place and vibrate concrete ...

get price### Shear strengthening of reinforced concrete beams with CFRP

The current paper reviews existing design guidelines for strengthening beams in shear with carbon fibre reinforced polymer (CFRP) sheets and proposes a modification to Concrete Society Technical Report TR55. It goes on to present the results of an experimental programme which evaluated the contribution of CFRP sheets towards the shear strength ...

get price### Shear Strengthening of RC Beams with Externally Bonded FRP ...

Oct 05, 2011 The results of an experimental and analytical investigation of shear strengthening of reinforced concrete (RC) beams with externally bonded (EB) fiber-reinforced polymer (FRP) strips and sheets are presented, with emphasis on the effect of the strip-width-to-strip-spacing ratio on the contribution of FRP (V f).In all, 14 tests were performed on 4,520-mm-long T-beams.

get price### Shear Strengthening of Reinforced Concrete T-beams Using ...

Oct 07, 2020 Shear Strengthening of Reinforced Concrete T-beams Using Carbon-Reinforced Concrete. By. Civilax - October 7, 2020. 5. ... Shear Strengthening of Reinforced Concrete T-beams Using Carbon-Reinforced Concrete: Duration: 14 Mins: ... Metaheuristic Approaches for Optimum Design of Reinforced Concrete Structures: Emerging Research... July 16, 2021 ...

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