Experimental Research On The Performance Of The Axially Loaded Reinforced Concrete Columns Strengthened With Carbon Fiber Reinforced Plastics

Carbon fiber reinforcement technology is the use of a wide range of civil engineering construction, new high technology content of the reinforcement material. Through the concrete expansion deformation, the parcel form rings, to improve the overall force structure performance. Structure can be used in key parts of the reinforced concrete beams and columns and so on, the construction cycle is short, application prospect. Chinese scholars have studied the related properties of the carbon fiber material, but for now, the carbon fiber reinforced concrete performance of the force is relatively small, there is no clear standard in reinforcement paste form, still belong to the areas of exploration.In this paper, the carbon fiber reinforced by three kinds of reinforcement forms of research on mechanical properties of reinforced concrete members under axial compression test, static loading test has been done by four columns with different reinforcement in the form of axial compression, the electric simulation method and numerical calculation method of the measured components of stress and strain parameters. Analysis on the failure characteristics of specimens. The results showed that the carbon fiber cloth on concrete horizontal expansion deformation plays a passive restraint, paste resin adhesive effect, shaft crack the slowdown in the pace of development, improve the distribution of ultimate bearing capacity, strengthening to improve the substantial.Research on mechanical properties, the steel strain, concrete strain, analysis of the relationship between the CFRP strain diagrams, the axial compression column in the static test under the condition of strain development law, so we can conclude that the material in the analysis before and after reinforcement stress performance comparison.Finally, numerical simulation, model validation, simulation analysis and test results are corresponding. In order to analyze the effect of CFRP layers on the pitch and axial column force performance brought.Therefore, the study has important theoretical significance for the carbon fiber cloth reinforcement under axial compression test results, provide a reference, has a good reference value for practical engineering application.