Torsion Performance Experimental Research And Design Method Of Composite Stress Steel Reinforced Concrete Component

Steel reinforced concrete composite structure refers to the main configuration of rolling or welding steel in reinforced concrete members, forming combination section; steel, steel bar and concrete coordinating role to resist external effect of the structure.With the rapid development of economy, science and technology, the requirements for using and anti-seismic function of construction have constantly improved. For the advantage of high strength, seismic performance, fire resistance, easy construction, steel reinforced concrete structure is more and more widely used in the earthquake area construction, high-rise structures, tall structures and large span structure, etc. At present Theory of steel reinforced concrete structure results still can’t meet to the theoretical level requirements of engineering practice, many important problems has not been overcome, such as steel reinforced concrete under complex stress state of the torsional behavior research, etc. On the basis of comprehensive understanding of the domestic and foreign research achievements on steel reinforced concrete torsion problem, this article mainly focus on the problem of compound torsion performance of steel reinforced concrete component.In this article we studies the performance of composite torsion of7steel reinforced concrete and I reinforced concrete column under repeated low cycle load, finished with axial compression ratio, torsion-bending moment ratio, stirrup ratio, whether set the stud for parameters of torsion test. Investigating the influence of various parameters on torsional component performance, we Observe and record in detail the data of load and strain of steel reinforced concrete torsion members and fracture development, etc. Through the analysis of test results we determined the main factors influencing the component bearing capacity and deformation capacity and the influence law.On the basis of the analysis of test results, in this paper,the cracking torque, ultimate torque and the influence factors of stiffness and deformation of the steel reinforced concrete under composite torsion has carried on the deep discussion and research, draw the scale of the influence of various factors on the steel reinforced concrete performance and the relationship between each other.According to the experimental research and data processing, the last part of the article proposed the steel reinforced concrete composite torsion component engineering design suggestions and research prospects of torsional stiffness, torsion deformation and crack width calculation. Finally the conclusions can also provide some basis and reference for steel reinforced concrete composite torsion component and other related studies.