蓄熱槽の影響を受けるRC地下外壁の温度応力と温度ひび割れに関する検討

概要

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In this report, the thermal stress of RC wall of basement structure was analysed by means of elastic 2D-FEM, changing the thickness of heat insulating board. It was found that the heat insulating board is very effective on reducing the thermal stress, in case of no neat insulating board, thermal crack was estimated to occur. Then un〓〓〓 experiment of the RC wall was carried out to investigate the thermal crack, varying reinforcement ratio(Pg=0.567%〜1.14%) and diameter of reinforcing bars(D22,D19,D16). The crack width reduced with increasing reinforcement ratio and with decreasing diameter of reinforcing bars. Then the thermal crack of typical basement RC wall which has not heat insulating board in the heat storage tank was calculated. The calculated crack width was compared with that of CEB-FIP model code 1990 and with that of CP crack method proposed by JCI. CEB-FIP model code 1990 gives rather good agreement with the calculated values based on the experimental results.
一般社団法人日本建築学会の論文
1996-03-20