Abstract
Shear loading test has been conducted with deep beam scale models in order to establish shear strengthening design procedure to existing beam by DFRCC (Ductile Fiber Reinforced Cementitious Composite) U-shaped winding. Finite element nonlinear analysis has been also carried out to explain not only test results but observed significant phenomena as well. Through comparison with past studies including rebar anchorage, steel plate and reinforced fiber sheet strengthening technologies, it is presented that further more shear capacity increase can be assured by the present construction joint technique with water jet treatment to existing beam. Practical design equation applicable even up to full winding is conclusively proposed focusing on additional shear capacity increase due to crack width control by DFRCC winding.
