A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BEHAVIOR of REINFORCED CONCRETE BEAMS EXPOSED to HEAT/ FIRE
There is reality in researches that discuss effect of fire on buildings and represent solution for the structural elements that exposed to fire. Improving fire resistance for beams requires studying response of reinforcing steel and concrete under fire attack. Concrete has a good behavior under fire due to its low thermal conductivity and non-combustibility. Concrete can act as a protective cover to steel reinforcement as fact of thermo-mechanical response of reinforced concrete beams under fire. Many experimental researches have been carried out to investigate the performance, resistance of beams and residual strength under elevated temperature. This thesis addresses the fire performance of reinforced concrete beams subjected to fire exposure. A series of models of RC beams has been studied. Firstly, the beams were studied under fire on three surfaces following the temperature time history by ISO 384. Secondly, studying heat transfer in RC beams and their effects on concrete capacity and reinforcing steel with changing cover and many factors through a parametric study have been illustrated. A finite element model using ANSYS program was carried out to accomplish a good correlation with the experimental results in both thermal and structural performance. Temperature is assigned on different sides of the beams as per ISO 384 standard fire curve. The element type used for concrete in thermal analysis is Solid 70. While Link 33 used to represent reinforcing steel. The validated finite element models are two beams specimens which were tested under Eurocode ASTM E119 and short design fire curve (SF) to conduct a parametric study to represent behavior of RC shallow beams under fire. Material nonlinearity was taken into consideration because it affecting on heat transfer through concrete and thermal expansion and yielding of reinforcing steel. In addition, investigate residual capacity of RC beams main steel under varying fire exposure time with different material types.Based on the verification studies, a parametric ...
BEHAVIOR of REINFORCED CONCRETE BEAMS EXPOSED to HEAT/ FIRE
There is reality in researches that discuss effect of fire on buildings and represent solution for the structural elements that exposed to fire. Improving fire resistance for beams requires studying response of reinforcing steel and concrete under fire attack. Concrete has a good behavior under fire due to its low thermal conductivity and non-combustibility. Concrete can act as a protective cover to steel reinforcement as fact of thermo-mechanical response of reinforced concrete beams under fire. Many experimental researches have been carried out to investigate the performance, resistance of beams and residual strength under elevated temperature. This thesis addresses the fire performance of reinforced concrete beams subjected to fire exposure. A series of models of RC beams has been studied. Firstly, the beams were studied under fire on three surfaces following the temperature time history by ISO 384. Secondly, studying heat transfer in RC beams and their effects on concrete capacity and reinforcing steel with changing cover and many factors through a parametric study have been illustrated. A finite element model using ANSYS program was carried out to accomplish a good correlation with the experimental results in both thermal and structural performance. Temperature is assigned on different sides of the beams as per ISO 384 standard fire curve. The element type used for concrete in thermal analysis is Solid 70. While Link 33 used to represent reinforcing steel. The validated finite element models are two beams specimens which were tested under Eurocode ASTM E119 and short design fire curve (SF) to conduct a parametric study to represent behavior of RC shallow beams under fire. Material nonlinearity was taken into consideration because it affecting on heat transfer through concrete and thermal expansion and yielding of reinforcing steel. In addition, investigate residual capacity of RC beams main steel under varying fire exposure time with different material types.Based on the verification studies, a parametric ...
BEHAVIOR of REINFORCED CONCRETE BEAMS EXPOSED to HEAT/ FIRE
Abd –El Kader Mohamed, Abeer (author)
2021-02-21
Article (Journal)
Electronic Resource
English
DDC:
690
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