The load-deflection curve and neutral axis changing curve, which were drawn by data from tests were analyzed. Both of steel fiber and reinforcing bar habe effect to induce the behavior of segmental U-shaped girder. The combination of 0.7% or 1.0% steel fiber and reinforcing bar sowed the effective ductle behavior of segmental U-shaped girder. The relationship of load-deflection and the crack pattern indicate that the appropriate combination are UFS1.0 and CFS1.0