Shear Resistance of Ultra-High Performance Concrete-Concrete CompositeBeam

Abstract:

Based on the ultimate equilibrium theory, the size effect, simplified concrete failure criterion, and failure condition of ultra-high performance concrete (UHPC) overlay were considered, and the calculation method of the UHPC-NC ultimate shear resistance was proposed. A shear resistance test was conducted. The on-site measurement and data analysis indicate that this calculation method not only accurately predicts the shear resistance, but also the shows the influence of UHPC overlay, the reinforcement in UHPC overlay, and size effect. The result also shows that the UHPC overlay could improve the ultimate shear resistance and ductility of the overall structure.