STUDY ON THE RELAXATION ANALYSIS OF THERMAL STRESS IN MASS CONCRETE

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  • マスコンクリートの温度応力のリラクセーション解析に関する研究
  • マス コンクリート ノ オンド オウリョク ノ リラクセーション カイセキ ニ

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Generally, creep analysis method is adopted in thermal stress analysis of concrete structure, in order to take into account the effect of stress relaxation caused by viscoelastic behaviour of concrete. As relaxation analysis method reflects the effect of stress relaxation more precisely and directly than creep analysis method does, it is considered to be more favorable to use the former in thermal stress analysis.<br>This study deals with the thermal stress analysis for three types of mass concrete structures by both creep and relaxation analysis methods. Thermal stresses calculated with the two methods are compared with measured values in field testing by stress meters. The effectiveness of the analysis method based on relaxation function was approved.

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