Analysis of Axial Compression Performance of Concrete Stub Column with CRB600H Stirrups

The CRB600H reinforcement is a new type of cold-rolled ribbed steel bar, which has the advantages green and low carbon, stable quality, saving precious metal resources so on. In order to study axial compression performance short concrete columns with stirrups, finite element analysis model high-strength reinforced stub was established by using ABAQUS, accuracy verified literature experiments. effects stirrup construction (Type A, B C), spacing strength on compressive bearing capacity ductility stirrups were analyzed compared HRB400 columns. results showed that peak specimens similar improved stirrup. Compared A C stirrup, had best restraining effect, higher. With decrease in spacing, increased. an increase strength, increases, but decreases. Through parameter analysis, formula for calculating 600 MPa based effective confinement index (keλt) proposed. It suggested equivalent volume can be replaced actual project. At same time, when used, effect should considered calculation capacity.