Numerical Assessment on Continuous Reinforced Normal-Strength Concrete and High-Strength Concrete Beams

High-strength concrete (HSC) has been broadly applied to various civil structures for its advantages including high compressive strength and excellent durability creep resistance. However, the brittleness of HSC raises concern about use in practice. So far study on continuous reinforced beams is limited. This work investigates structural response beams, results are compared with those counterparts made normal-strength (NSC). By applying a finite element method verified by experimental data, comprehensive assessment performed two-span NSC (compressive strengths 30, 60 90 MPa) beams. A wide range flexural reinforcement ratios used cover both under-reinforced over-reinforced The show that exhibit better performance terms ultimate load, deformation, ductility moment redistribution, when Formulae relating redistribution either neutral axis depth or tensile steel strain suggested.