Reinforced concrete rectangular beams strengthened with CFRP laminates

Shahawy, Mohsen; Arockiasamy, M.; Beitelman, T.; Sowrirajan, R.

doi:10.1016/1359-8368(95)00044-5

Cited by 93 publications

(41 citation statements)

References 1 publication

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“…The FE mesh for this analysis is shown in Figure 5.5. numerical and experimental data (Shahawy et al, 1996). The FE analysis predicts the ultimate load to be 55.8 KN which is in a good agreement with the experimental ultimate load of 57 KN.…”

Section: Mixed Element Analysissupporting

confidence: 72%

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3D nonlinear mixed finite-element analysis of RC beams and plates with and without FRP reinforcement

Hoque¹,

Rattanawangcharoen²,

Shah³

et al. 2007

Computers and Concrete

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Three 3D nonlinear finite-element (FE) models are developed to study the behavior of concrete beams and plates with and without externally reinforcement of fibre reinforced polymer (FRP). Ramtekkar's mixed layer-wise 3 dimensional (3D) 18-node FE model (108 degrees-of-freedom, DOFs) is modified to accommodate the nonlinear concrete and elasto-plastic steel behaviour. Saenz's stress-strain equation is used for material nonlinearity of concrete. As in any 3D mixed FE analysis, the run time using the model can be computationally expensive. Two additional layer-wise 18-node FE models: Displacement FE model (54 DOF) and transitional FE model (81 DOF) are developed.The displacement FE model is based on purely displacement field, i.e. only displacement components are enforced throughout the thickness of the structures. The transitional FE model has six DOF (three displacement components in the coordinate axis direction and three transverse stress components -where z is the thickness direction) per node in the upper surface and only three DOF (three displacement components in the coordinate axis direction) per node in the bottom surface. The overall intention for developing the two additional element models is to investigate the result quality with the reduction of computational time by using elements with less DOF in less critical part of structure. In this study we limited our effort to investigate the quality of the results rather than efficiency of the models. The analysis of reinforced concrete (RC) beam strengthened with FRP and composite plate using these models are verified against the experimental results and the results from the commercial software, ANSYS respectively.Several parametric studies are done on composite RC beam and composite plate.iii

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Section: Mixed Element Analysissupporting

confidence: 72%

“…A simply-supported RC beam with an external reinforcement of FRP layers at the bottom experimented by Shahawy et al (1996) …”

Section: Composite Beammentioning

confidence: 99%

3D nonlinear mixed finite-element analysis of RC beams and plates with and without FRP reinforcement

Hoque¹,

Rattanawangcharoen²,

Shah³

et al. 2007

Computers and Concrete

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“…It was aimed at evaluating the usefulness of passive control bracing systems for the seismic retrofit of R/C frames designed for gravity loads only. Shahawy et al [16] assessed the effectiveness of external reinforcement in terms of the cracking moment, maximum moment, deflection, and crack patterns. Four beams (8"x12"x108") were tested using minimum steel reinforcement (two ½" diameter bars) and varying the layers of unidirectional CFRP followed by a non-linear finite element computer model to compare to the results of the experiment.…”

Section: Finite Element Modeling Of a Multi-storeyed Retrofitted Reinmentioning

confidence: 99%

Finite Element Modeling of a Multi-Storeyed Retrofitted Reinforced Concrete Frame

Kumari¹,

Kwatra²

2013

IOSR-JMCE

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“…Experiments conducted so far used both glass ®ber and carbon ®ber laminates. The works reported by Meier and Kaiser [3], Meier et al [4], Shahawy et al [5,6], Takada et al [7] have used carbon ®ber laminates. Ritchie et al [2] studied the effectiveness of strengthening using different types of FRPC laminates.…”

Section: Introductionmentioning

confidence: 99%

Behavior of CFRPC strengthened reinforced concrete beams with varying degrees of strengthening

Ramana

Kant

Morton

et al. 2000

Composites Part B: Engineering

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This paper summarizes the results of experimental and analytical studies on the¯exural strengthening of reinforced concrete beams by the external bonding of high-strength, light-weight carbon ®ber reinforced polymer composite (CFRPC) laminates to the tension face of the beam. Four sets of beams, three with different amounts of CFRPC reinforcement by changing the width of CFRPC laminate, and one without CFRPC were tested in four-point bending over a span of 900 mm. The tests were carried out under displacement control. At least one beam in a set was extensively instrumented to monitor strains and de¯ections over the entire range of loading till the failure of the beam. The increase in strength and stiffness provided by the bonded laminate was assessed by varying the width of laminate. The results indicate that the¯exural strength of beams was signi®cantly increased as the width of laminate increased. Theoretical analysis using a computer program based on strain compatibility is presented to predict the ultimate strength and moment±de¯ection behavior of the beams. The comparison of the experimental results with theoretical values is also presented, along with an investigation of the beam failure modes. q

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Reinforced concrete rectangular beams strengthened with CFRP laminates

Cited by 93 publications

References 1 publication

3D nonlinear mixed finite-element analysis of RC beams and plates with and without FRP reinforcement

3D nonlinear mixed finite-element analysis of RC beams and plates with and without FRP reinforcement

Finite Element Modeling of a Multi-Storeyed Retrofitted Reinforced Concrete Frame

Behavior of CFRPC strengthened reinforced concrete beams with varying degrees of strengthening

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