钢纤维钢筋混凝土受扭构件力学性能的试验研究

By conducting a research of torsion test of 14 members of steel fiber reinforced concrete with the rectangular section, the author studies failure mode of torsion member of steel fiber reinforced concrete, analyzes the change trend of curve of load -- per unit angel of torsion, ductility factor and bearing capacity etc., and discusses failure mechanism of torsion member of steel fiber reinforced concrete. The result of the experiment indicates that the steel fiber in the steel reinforced concrete can improve the ductility and stiffness of member of steel reinforced concrete and increase the cracking torque and ultimate torque of torsion member. As a result, brittle failure of member develops into the ductility failure and the increasing amount of steel fiber added into the concrete can lead to the greater extent of increase in the ductility, rigidity, cracking torque and ultimate torque.