Fire resistance of FRP strengthening concrete beams at elevated temperature using ABAQUS

• Autorzy: Keong, Ng Chee , Kadir, Mariyana Aida Ab , Zuhan, Nurizaty , Mastor, Muhammad Najmi Mohamad Ali , Alel, Mohd Nur Asmawisham
• Języki publikacji: EN

Abstrakty

EN

Mechanical properties of FRP such as strength and stiffness as well as the bonding interface between FRP and concrete will be badly deteriorated when exposed to high temperature. Furthermore, the effect of thickness of insulation with different type of concrete strength has not yet been studied elsewhere in numerical studies. Therefore, this study is to assess the thermal-structural behaviour of insulated FRP strengthened RC beam exposed to elevated temperature using ABAQUS. The proposed numerical model of 200×300 mm RC beam subjected to 2 hours standard fire curve (ISO 834) had been validated with the analytical solution. The validated numerical model then is used in parametric study to investigate the behaviour of fire damaged normal strength concrete (40 MPa) and high strength concrete (60 MPa) of RC beam strengthened with CFRP using various fire insulation thickness of 12.5 mm, 25 mm and 40 mm, respectively. The result of steel characteristic strength reduction factor is compared with analytical using 500°C Isotherm methods. The parametric studies indicated that the fire insulation layer is essential to provide fire protection to the CFRP strengthened RC beams when exposed to elevated temperature. The insulation layer thickness of 25 mm had been found to be the optimum thickness to be used as it is able to meet the criteria of temperature distribution and displacement requirement. In conclusion, the numerical model developed using ABAQUS in this study is to carry out assessment on the thermal-structural behaviour of the insulated CFRP-strengthened RC beams at elevated temperature.

Słowa kluczowe

PL

ABAQUS; beton; izolacja ogniochronna; polimer wzmocniony włóknami; FRP; odporność ogniowa; temperatura wysoka

EN

ABAQUS; concrete; fire insulation; fibre reinforced polymer; FRP; fire resistance; high temperature

• Czasopismo: Archives of Civil Engineering
• Rocznik: 2022
• Tom: Vol. 68, nr 2
• Strony: 105--123
• Opis fizyczny: Bibliogr. 28 poz., il., tab.

Twórcy

autor

Keong, Ng Chee

• Public Work Department, Jalan Sultan Salahuddin, Kuala Lumpur, Malaysia,

autor

Kadir, Mariyana Aida Ab

• School of Civil Engineering, University Teknologi Malaysia, Skudai, Johor Bahru, Johor, Malaysia,
• Institute of Noise and Vibration, University Teknologi Malaysia, Skudai, Johor Bahru, Johor, Malaysia

autor

Zuhan, Nurizaty

• School of Civil Engineering, University Teknologi Malaysia, Skudai, Johor Bahru, Johor, Malaysia,

autor

Mastor, Muhammad Najmi Mohamad Ali

• School of Civil Engineering, University Teknologi Malaysia, Skudai, Johor Bahru, Johor, Malaysia,

autor

Alel, Mohd Nur Asmawisham

• Engineering Seismology and Earthquake Engineering Research (eSEER), Institute of Noise and Vibration, Universiti Teknologi Malaysia, Skudai, Johor Bahru, Johor, Malaysia,

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).

Identyfikatory

DOI

10.24425/ace.2022.140632