Experimental Study And Nonlinear Analysis On Eccentric Compression Concrete Column Confined By High-strength Stirrups

Concrete structure has been widely used in civil engineering fields, as the technology development, there were many new progress on concrete structure materials and the arrangement of bars,meanwhile, emerge many new problems. With the application of high-strength concrete, it need to solve the problem of brittle failure. A low-strength stirrup and general arrangement of stirrup can't constraint horizontal deformation of high-strength concrete.In this paple we will study the behaviour of high-strength concrete confined by High-strength stirrups to research eccentric compression concrete coloum. It will promote and popularize concrete column confined with continue compound spiral Hoop.Based on the test of 10 high-strength concrete eccentric compression concrete coloum confined by High-strength stirrups in this paple, studyed the damage pattern, ultimate strength and deformation properties, and gived the load-deformation curve. Through test results ,analysised the Impact of cross-section ultimate strength and load-deformation by stirrups strength, stirrup spacing, average bound stress, eccentricity change,etc, focus on the stress changes of high-strength stirrups. In this paple, calculated cross-section bearing capacity of test structure according to the existing norms.finding the result of the existing norms was different from the test result because of the existing norms didn't consider the impact of stirrups. Through test results and theoretical analysis, established the calculation method of cross-section bearing capacity,finding the calculation method result was consistent with test results.At last made nonlinear finite element analysis by the software of Ansys,finding software result was consistent with test results,and further analysis the impact of the various parameters.