せん断・ねじりⅡ

[2110] REINFORCING EFFECTS OF STIRRUPS ON CONCRETE CONTRIBUTION IN SHEAR

Devin　GUNAWAN¹, 中村拓郎², 二羽淳一郎² (1.Tokyo Institute of Technology 2.東京工業大学)

キーワード：RC beam, shear, arch action, beam action, stirrup ratio, shear span

This research investigates the reinforcing effects of stirrups on contribution of concrete in shear, focusing on arch action and beam action. Static bending tests were conducted on RC beams with various stirrup ratio and shear span. In this study, the contribution of arch action was estimated based on the strain of tensile steel bar at the support point. The results showed that while contributing directly, stirrups also improve the contribution of arch action, and maintain the contribution of concrete in beam action. In addition, the importance of regulation in stirrup spacing was also discussed.