| The Steel Reinforced Concrete structure is a new structure which gets rapid development in the engineering after the steel structure and the reinforced concrete structure. Based on the cooperative working of the steel and concrete, the Steel Reinforced Concrete structure can fully exert both material properties. Compared with the reinforced concrete structure, the Steel Reinforced Concrete structure diminishes the sectional dimension and reduces the weight and seismic action of it, as its component's stiffness, ductility and bearing capacity are greatly improved by configurating the profile steel. Compared with the steel structure, the concrete component part of the steel reinforced concrete structure which cooperates with the profile steel has the function both in force and the protection of the steel, so it prohibit the part of the steel from yielding which make the steel get full usage, and enhance the whole stiffness to greatly improve the torsion yield performance of the steel in-plane. What's more, there are more remarkable superiorities in aspects of durability and fire resistance of the Steel Reinforced Concrete structure than the steel structure. In a word, with less cost of construction, the steel reinforced concrete structure, which has significant technical and economic profit and social benefits, could provide more strength, more stiffness, greater ductility and energy consumption than the reinforced concrete structure and the steel structure. So the Steel Reinforced Concrete structure is more and more widely applied to the field of large-span, heavy load, high-rise and super-tall buildings.This paper analyzed the Steel Reinforced Concrete components under monotonic loading of torsion and press-torsion by using the finite element software ANSYS. Selected the cell type and material properties during the analysis process with the software ANSYS and had an intensive study of the specific operating procedure. This provided the referential value for the use of ANSYS software in analyzing twisted steel reinforced concrete structure.In the past, the finite element analysis of the Steel Reinforced Concrete structure focused only on the torsion, furthermore without considering the bond-slip between steel and concrete. During the analysis, the bond-slip element was taken into consideration in the course of modeling. The loading progress was that the axial force was exerted firstly, then exerted the torsion by the way of changing the displacement. This way not only improved the accuracy of the finite element analysis, but provided the referential value for the study of the bond-slip of the steel and concrete which was on the torsion.The Steel Reinforced Concrete structure has great torsion performance. For studying the load-carrying situation and the influence facts of the steel reinforced concrete components under the effect of torsion, this paper exerted torsion and press-torsion on the steel reinforced concrete structure. Considering the load-carrying situation of the steel reinforced concrete components are influenced by the factors such as axial-load ratio, the size of steel and sectional dimension of components, the crack torsion and limiting torsion of the components were computed by the finite element method, then a comparison had been made between the result of the components by the finite element method and the torsion experiment had been made by Hsu, H.- L, Wang, C.- L. in National Central University. What's more, a study of the crack and the stress situation of the components were carried out and had a similar result with the experiment. This provided theoretical basis for the composite torsion experiment and study of the steel and concrete. |
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