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Numerical modelling of reinforced concrete flexural members strengthened using textile reinforced mortars

Frontiers of Structural and Civil Engineering 2023年第4期17卷 649-668页

作者： naveen revanna Charles K.S.Moy Department of Civil Engineering Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China

Externally bonded(EB)and near-surface mounted(NSM)bonding are two widely adopted and researched strengthening methods for reinforced-concrete *** composite substrates are easy to reach and repair using appropriate surface treatments,whereas NSM techniques can be easily applied to the soffit and concrete member *** EB bonded fiber-reinforced polymer(FRP)technique has a significant drawback:combustibility,which calls for external protective agents,and textile reinforced mortar(TRM),a class of EB composites that is noncombustible and provides a similar functionality to any EB FRP-strengthened *** study employs a finite element analysis technique to investigate the failing failure of carbon textile reinforced mortar(CTRM)-strengthened reinforced concrete *** principal objective of this numerical study was to develop a finite element model and validate a set of experimental data in existing literature.A set of seven beams was modelled and calibrated to obtain concrete damage plasticity(CDP)*** predicted results,which were in the form of load versus deflection,load versus rebar strain,tensile damage,and compressive damage patterns,were in good agreement with the experimental ***,a parametric study was conducted to verify the applicability of the numerical model and study various influencing factors such as the concrete strength,internal reinforcement,textile roving spacing,and externally-applied load *** ultimate load and deflection of the predicted finite element results had a coefficient of variation(COV)of 6.02%and 5.7%,respectively.A strain-based numerical comparison with known methods was then conducted to investigate the debonding *** developed finite element model can be applied and tailored further to explore similar TRM-strengthened beams undergoing debonding,and the preventive measures can be sought to avoid premature debonding.

关键词： fiber reinforced polymer textile reinforced mortar finite element analysis concrete damage plasticity calibration and validation parametric study

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Verifying a Finite Element Analysis Methodology with Reinforced Concrete Beam Experiments

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Journal of Applied Mathematics and Physics 2020年第11期8卷 2549-2556页

作者： naveen revanna Charles K. S. Moy Theofanis Krevaikas Department of Civil Engineering Xi’an Jiaotong-Liverpool University Suzhou China

This paper verifies the accuracy of a methodology recently proposed on reinforced concrete beam tested in flexure available from literature. This was implemented using the general purpose FEA software Abaqus. A very good agreement between numerical and experimental study was obtained. The compression failure, tension failure matched with experimental findings which shows the applicability of the methodology.

关键词： Numerical Abaqus CDP

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Verifying a Finite Element Analysis Methodology with Reinforced Concrete Beam Experiments

Verifying a Finite Element Analysis Methodology with Reinfor...

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作者： naveen revanna Charles K.S.Moy Theofanis Krevaikas Department of Civil Engineering Xi’an Jiaotong-Liverpool University

关键词： Numerical Abaqus CDP

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