火災時における鉄筋コンクリート構造の局部的熱応力に関する研究

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In this paper, the auther studies on the disturbance of thermal stresses of reinforced concrete members. As an example, the states of stresses caused by the thermal expansion in the concrete plate with rectangular shape under parabolic or V-shape temperature distribution are investigated theoretically or experimentally. Some of the results of the study are as follows. 1) Thermal stresses of rectangular plate are disturbed near the free end of plate. 2) Tensile stress (chordwise stress σ_y : Fig. 18, 19) by the effect of the free end is caused near the midchord (y=0). Tensile stress is large at 0.5 chord length (1.0c) from the free end but has dropped to practically zero after 1.25 chord length from the tip. 3) It is indicated that the effects of relatively large variation of modulus of elasticity of concrete are not major importance for a plate with a free end.
社団法人日本建築学会の論文
1971-04-30