The investigation is focused on the development of an energy-based fire load for tunnel structures using CFD. An energy-based thermal load allows considering realistic time-temperature-curves for design and re-analysis of tunnels yielding to tunnel specific thermal loading schemes. These thermal loading schemes are used for a coupled transient thermal-mechanical multifield FEM analysis for unreinforced tunnel linings made of concrete. In addition to that, a thermal material-damage-model is developed to assess the thermal damage of concrete after thermal loading.
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The investigation is focused on the development of an energy-based fire load for tunnel structures using CFD. An energy-based thermal load allows considering realistic time-temperature-curves for design and re-analysis of tunnels yielding to tunnel specific thermal loading schemes. These thermal loading schemes are used for a coupled transient thermal-mechanical multifield FEM analysis for unreinforced tunnel linings made of concrete. In addition to that, a thermal material-damage-model is devel...
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