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Evaluation of fire impact on structural elements using ANSYS

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Abstract

Fire accidents are significant disasters that create massive damage to buildings and other concrete structures. Generally, concrete offers good resistance against fire due to its non-flammable, low thermal conductivity and acts as a protective cover to the steel reinforcement up to certain conditions. However, high temperatures significantly affect the performance of concrete structures. For this reason, in the present study, all the structural elements (beam, column and slab) are subjected to a temperature of 593 ºC for 2 h (condition given in ANSYS software). Moreover, fire effect on the beam, columns with different cover sizes, and slabs with various thicknesses at elevated temperatures have been studied through 3D nonlinear transient thermomechanical finite element analysis. The change in cover and thickness of structural elements has a significant influence on thermal stress. Moreover, increasing every 5 mm cover in beams enriches 0.7% thermal stress resistivity and a raise of 3.5% thermal stress resistivity was noticed with the addition of every 10 mm cover size in columns. Similarly, 11.2% of thermal stress resistivity rise was observed at every 25 mm addition of slab thickness.

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Authors and Affiliations

  1. Department of Civil Engineering, CVR College of Engineering, Hyderabad, 501510, India

    Chava Venkatesh & T. Muralidhararao

  2. Department of Civil Engineering, VFSTR (Deemed to be University), Guntur, 522213, India

    Chereddy Sonali Sri Durga & Sri Durga

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  1. Chava Venkatesh
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  2. Chereddy Sonali Sri Durga
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  3. Sri Durga
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  4. T. Muralidhararao
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Correspondence to Chava Venkatesh.

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Venkatesh, C., Sonali Sri Durga, C., Durga, S. et al. Evaluation of fire impact on structural elements using ANSYS. J Build Rehabil 6, 22 (2021). https://doi.org/10.1007/s41024-021-00115-4

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  • DOI: https://doi.org/10.1007/s41024-021-00115-4

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