構造部材の挙動に及ぼす載荷速度の影響に関する実験的研究

Abstract

To investigate the effect of a stress rate on the tensile strength of concrete, dynamic splittingtests of twenty concrete cylinder specimens were made. It is recognized that the tensile strengthof concrete increases with a increseasing stress rate.Effects of a curvature rate on the elastic-plastic behavior of steel beams and reinforced con-crete beams subjected to dynamic bending are discussed on the basis of the experimental andtheoretical investigations. The stress-strain relationships of steel, concrete and reinforcing barwere formulated taking the effect of a strain rate into consideration and used in the analysis.It is recognized that the moment bearing capacity of beams increases with a increasing curvaturerate.