Beam I

[2024] EVALUATION OF CRACKING AND DEFORMATION BEHAVIOR OF RC BEAMS REINFORCED WITH HIGH STRENGTH REBAR

Usman Farooq¹, Hikaru NAKAMURA², Yoshihito YAMAMOTO², Taito MIURA² (1.Nagoya University 2.名古屋大学)

Keywords:crack space, crack width, curvature, high strength rebar, RBSM, ひび割れ幅, ひび割れ間隔, 曲率, 高強度鉄筋

This paper evaluated the effect of high strength rebar of SD685 on the cracking and deformation behavior. Four specimens with alternative combination of either SD345 or SD685 rebar along with either normal or high strength concrete were experimentally tested and result were compared with the equations in JSCE design standards about crack width, crack space and deformation behavior. To build comparative analytical study, 3D Rigid Body Spring Model (RBSM) was used and experimental results were validated. Extensive parametric study considering various reinforcement ratios and concrete covers was also conducted analytically by using RBSM and the applicability of JSCE equations was confirmed.