Axial Compression Behaviors of Angle-steel Reinforced Concrete Stub

Angle reinforced concrete structure is a new type of composite structure between steel and reinforced concrete structures. This paper investigated the axial compression experimental study of ten angle-steel reinforced concrete (ASRC) stubs whose slenderness ratios are 3, observed the destruction of the specimen shape, analyzed the mechanical properties of the specimen, and discussed the effect of size of the section, battens spacing and the axial compressive strength of concrete on the bearing capacity and ductility performance of the ASRC stub According to the experimental data and load conditions, this paper presented a finite element model and takes the numerical simulation analysis for ASRC stubs, get the load-displacement curves that calculated from the full-range analysis program, and contrasted with the experimental load-displacement curves, both in good agreement. Based on the experimental data and the finite element data, this paper presented the relationship between reduced factor of strength of angle and casing hoop steel coefficient, and proposed a bearing capacity formula of the ASRC stub under axial compression, the formula is simple in form and convenient to use.