Torsional behavior model of steel-fiber-reinforced concrete members modifying fixed-angle softened-truss model

摘要: Abstract Steel-fiber-reinforced concrete (SFRC) is an efficient cement-based composite material that can compensate for the drawbacks of properties conventional and has better structural performances than concrete. It improve torsional behavior as well flexural shear behavior. However, analysis SFRC members quite complicated because force equilibrium strain compatibility in a three-dimensional space should be satisfied. Accordingly, many studies proposed empirical evaluation equations strength based on experimental results. Therefore, this study derived constitutive model tension, which greatly influences SFRC, test results panels under biaxial stress, tensile was introduced to fixed-angle softened-truss model. A theoretical modified developed, performance analytical also evaluated compared obtained from literature.