Experimental study of RC deep beams with opening and FRP composites installed by means of EBR and EBROG methods

An experimental study was conducted on three RC Deep beams along with Analytical simulation under three point loading in which one specimen was provided with Rolled section reinforcement. The specimens are designed according to IS 456:2000 . In one specimen the total reinforcement area was replaced with rolled I-Section. Steel plate grade of MS250 of 3mm thickness was molded as rolled I- Section. Various parameters like flexural behavior, shear strength, deflection, crack width, stress and ductility were calculated. For improving the bond strength between steel section and concrete in composite member, shear struts are provided. The length to depth ratio (l/d) was 1.875 and shear span to depth ratio (a/d) was 0.75. Finite element simulation was carried out by using ANSYS 18.1. and comparison was made in between Analytical and Experimental results.

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Improved empirical model for the strut efficiency factor and the stiffness degradation coefficient for the strength and the deflection prediction of FRP RC deep beams

Structures ◽

10.1016/j.istruc.2020.12.039 ◽

2021 ◽

Vol 29 ◽

pp. 2044-2066

Author(s):

Job Thomas ◽

S. Ramadass

Keyword(s):

Empirical Model ◽

Efficiency Factor ◽

Stiffness Degradation ◽

Deep Beams ◽

Rc Deep Beams ◽

Degradation Coefficient

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Behaviour of T-shaped RC deep beams with openings under different loading conditions

Structures ◽

10.1016/j.istruc.2021.01.091 ◽

2021 ◽

Vol 31 ◽

pp. 1106-1129

Author(s):

Mona K. Ghali ◽

Mohamed Said ◽

T.S. Mustafa ◽

Abdallah A. El-Sayed

Keyword(s):

Loading Conditions ◽

Deep Beams ◽

Rc Deep Beams

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Probabilistic models of the strut efficiency factor for RC deep beams with MCMC method

Structural Concrete ◽

10.1002/suco.201900249 ◽

2020 ◽

Vol 21 (3) ◽

pp. 917-933

Author(s):

Xi Liu ◽

Tao Wu ◽

Yuanyuan An ◽

Yang Liu

Keyword(s):

Probabilistic Models ◽

Efficiency Factor ◽

Mcmc Method ◽

Deep Beams ◽

Rc Deep Beams

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Investigation of a New Strengthening Technique for RC Deep Beams Using Carbon FRP Ropes as Transverse Reinforcements

Fibers ◽

10.3390/fib6030052 ◽

2018 ◽

Vol 6 (3) ◽

pp. 52 ◽

Cited By ~ 29

Author(s):

Constantin Chalioris ◽

Parthena-Maria Kosmidou ◽

Nikos Papadopoulos

Keyword(s):

Shear Failure ◽

Structural Behaviour ◽

Deep Beams ◽

Near Surface ◽

Lap Splices ◽

Rectangular Beam ◽

Rc Deep Beams ◽

Carbon Fibre Reinforced Polymer ◽

Strengthening Technique ◽

The Web

The effectiveness of a new retrofitting technique to upgrade the structural behaviour of reinforced concrete (RC) deep beams without steel stirrups using carbon fibre-reinforced polymer (CFRP) ropes as the only transverse shear reinforcement is experimentally investigated. Five shear-critical beams with rectangular and T-shaped cross-section are tested under monotonic loading. The strengthening schemes include (a) one vertical and one diagonal single-link CFRP rope that are internally applied through the web of the rectangular beam using an embedded through-section (ETS) system and (b) two vertical U-shaped double-link ropes that are applied around the perimeter of the web of the flanged beam using a near-surface-mounted (NSM) system. In both cases, the free lengths of the CFRP ropes have been properly anchored using epoxy bonded lap splices of the rope as NSM at (a) the top and the bottom of the web of the rectangular beam and (b) the top of the slab of the T-beam. Promising results have been derived, since the proposed strengthening technique enhanced the strength and altered the brittle shear failure to a ductile flexural one. The experimental results of this study were also used to check the validity of an analytical approach to predict the strength of shear strengthened deep beams using FRP ropes as transverse link reinforcement.

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