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首页> 外文会议>International conference on structural engineering, mechanics and computation;SEMC 2010 >Calculation of temperature development on concrete members during tunnel fires by CFD modelling
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Calculation of temperature development on concrete members during tunnel fires by CFD modelling

机译：用CFD模型计算隧道火灾中混凝土构件的温度发展。

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摘要

For the calculation of load bearing capacities of tunnel structures the temperature of concreternmembers depends on the temperature exposure of the member surface. The temperature development on thernsurface is generally obtained by applying temperature time curves according to national or international standards.rnIn tunnel fires the temperature boundary conditions depend on the type and the intensity of a natural fire. For thernsimulation of natural fires several models can be used. Zone models and field models are capable to calculate thernreal temperature exposure during tunnel fires. The CFD-Code FDS (fire dynamic simulator) allows to calculaternthe temperature conditions of structural members in tunnel cross sections. The results depend on the type andrnamount of fire load and the location of the fire load with respect to the members. In our investigation a naturalrnpool fire is simulated in a rectangular street tunnel cross section.
机译：为了计算隧道结构的承载力，混凝土构件的温度取决于构件表面的暴露温度。通常根据国家或国际标准通过应用温度时间曲线来获得地表温度的发展。在隧道火灾中，温度边界条件取决于自然火灾的类型和强度。为了模拟自然火灾，可以使用几种模型。区域模型和现场模型能够计算隧道火灾期间的实际温度暴露。 CFD代码FDS（火灾动态模拟器）允许计算隧道横截面中结构构件的温度条件。结果取决于火荷载的类型和数量以及火荷载相对于构件的位置。在我们的调查中，在矩形街道隧道横截面上模拟了自然水池火灾。

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