曲げ降伏後にせん断破壊するRC柱の変形性能に関する寸法効果

概要

論文の詳細を見る
Experiments of structural members are often conducted using small models. However, the size effect on strength or deformation capacity is remarkable in concrete, especially when concrete strength is high. Though many researches have been conducted to examine the size effect on strength, the size effect on the deformation capacity has rarely been examined. This paper reports the test results of 11 specimens investigating the size effect on the deformation capacity where the test parameters were strength of hoops and concrete strength. It has been revealed that strength deterioration in the deformation diagram starts earlier when the size is larger and the concrete strength is higher, because the strain in the concrete increases more rapidly. Moreover, even if the hoops do not yield, the cracks in the core concrete widen by cyclic loading, which causes the size effect as well as the diagonal compression failure near hoops.
社団法人日本建築学会の論文
2006-03-30