Fire Evaluation of RC Frames Strengthened with FRPs Using Finite Element Method

Salehi, Reza; Akbarpour, Abbas; Shalbaftabar, Armaghan

doi:10.3844/ajeassp.2020.610.626

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…An improved performance was seen with the BFRP. Moreover it was also found that reduced stiffness during higher temperatures can withstand the re hence a combination of steel along with BFRP can produce an improved stiffness than regular bars of steel [14]. Not only BFRP are found to be robust, FRCM-Fiber Reinforced Cementitious Matrix are found to be robust with RC frames with non-ductility [15].…”

Section: Literature Reviewmentioning

confidence: 91%

Evaluation of RC Elements Under High-Temperature Conditions with different Locations: Analytical Investigation

Parthasarathi

Satyanarayanan

Prakash

et al. 2023

Preprint

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Developments in the field of construction has taken an encompassing transformation in the design of structures. Concrete technology has also seen several advancements with the inclusion of reinforcement materials like steel and iron in them which are called as the (RC) Reinforced Concrete. Amidst several developments in the technology of the structural design for a quality construction, RC structural element failure under higher temperature with load remains as one of the most critical mechanisms to be addressed with the recent advancements. There are several methods and studies that try to rule out such failure mechanism with certain improvised methodologies in the fire resistivity behavior of concrete structures. Nevertheless, only a few studies have concentrated on the interaction between the structural and functional elements in the emergence of fire. Considering this, the present work concentrates on the behavior of RC infilled frames with elements like beam, column and beam column joints under higher temperatures and load for which the ABAQUS finite element software is used. The model is simulated with a transient state analysis and characteristics like deflection, stiffness, principal stress are studied for the RC beam, column and beam column joints with varied temperature and load. The outcome of the simulation shows the effect of load and temperature on RC elements and the respective performance graphs are plotted.

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Section: Literature Reviewmentioning

confidence: 91%

Evaluation of RC Elements Under High-Temperature Conditions with different Locations: Analytical Investigation

Parthasarathi

Satyanarayanan

Prakash

et al. 2023

Preprint

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“…Abdulghani & Jaafer [19] Steel fibers and SIFCON Salehi et al [20] Combining steel-BFRP bars and different BFRP sheet angles Mohammed et al [21] Fiber-reinforced polymers (FRPS)…”

Section: Type Of Strengtheningmentioning

confidence: 99%

Behavior of Fire-damaged RC Beams After Strengthening with Various Techniques

Elsheikh,

Alzamili

2024

Civ Eng J

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High temperatures during a fire can significantly degrade the structural capacity of concrete. However, in many cases, it is possible to restore and strengthen fire-damaged concrete rather than completely rebuild damaged structures. The study considered two types of concrete (normal 25 MPa and high-strength 65 MPa) with two types of strengthening techniques: carbon-fiber-reinforced polymers (CFRP) sheets with different thicknesses of 1.5 and 2.5 mm and slurry-infiltrated fibrous concrete (SIFCON) jacketing with different fiber sizes of 20 and 30 mm. The numerical simulations and analyses were conducted to capture the complex behavior of fire-damaged concrete members (beams). A fire-damaged concrete beam subjected to an extreme or critical fire Exposure time (2 hours) was evaluated and modified using a finite element simulation approach. The simulation process included three stages: the first, subjecting the concrete beam to thermal loading; the second, reflecting the fire distribution map to another model of applying mechanical loading; and the third, involving the application of strengthening to the damaged model. The results showed that the strengthening using CFRP with a thickness of 2.5 improved the load-carrying capacity compared with SIFCON in both types of concrete. 200% improvement for the normal-strength concrete beam and a 136% improvement for the high-strength concrete beam, compared to the damaged beams. Doi: 10.28991/CEJ-2024-010-01-012 Full Text: PDF

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Influence of Fire on Steel Reinforcement of R.C.C Elements

Burdak¹,

Gehlot²

2023

Composites Science and Technology

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Fire Evaluation of RC Frames Strengthened with FRPs Using Finite Element Method

Cited by 5 publications

References 32 publications

Evaluation of RC Elements Under High-Temperature Conditions with different Locations: Analytical Investigation

Evaluation of RC Elements Under High-Temperature Conditions with different Locations: Analytical Investigation

Behavior of Fire-damaged RC Beams After Strengthening with Various Techniques

Influence of Fire on Steel Reinforcement of R.C.C Elements

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