1 二次元の熱伝導の図式解法 : 火災時に於けるコンクリート部材の内部温度分布の算定

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  • (1) GRAPHICAL METHOD FOR THE TWO-DIMENSIONAL HEAT FLOW PROBLEMS : Thermal Distribution of Heated Concrete Member at Fire
  • 二次元の熱伝導の図式解法
  • 2ジゲン ノ ネツ デンドウ ノ ズシキカイホウ

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Graphical method for the heat conduction problems were already discussed by Schmidt, Osida, Emmons e.t.c.. But when the thermal diffusivity κ is a function of temperature or space, few ones were discussed. Thereupon, we discussed one method for the two-dimensional heat flow problems when κ is a function of temperature, and applied this method for a practical problems to find the temperature distribution of a reinforced concrete construction which is heated by a fire and its κ decreases by the elevation of its temperature. As an example, we showed the graphs of the temperature distribution of a member which is heated by the 3rd class fire of J.I.S.A 1302. This paper is a fundamental research to calculate the thermal stress which is caused by a fire.

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