Research On Mechanical Behavior Of Concrete Columns Strengthened By C-section Steel Under Axial Compression

With the rapid development of modern structure, all kinds of new type of compositestructure is constantly emerging. C-section Steel confined concrete short column through thesteel skeleton constituted by C-section Steel and batten plate can make the core concrete inthe three state of the compression, so that the ultimate bearing capacity and ductility of thecomposite column performance can be increased. However, the test and theory research arenot enough about this new type of composite column. As follows are the research in thispaper:(1) The axial compression test research of C-section Steel confined concrete shortcolumn.To study the mechanical performance and failure modes about the C-section SteelReinforced concrete short Columns under the axial compression, six columns were made,with different batten plate spacing and the strength of the concrete. And the test gives thereference about the mix proportion of the high-strength concrete. In the experiment, failureprocess and phenomenons were recorded. According to the load-displacement and theload-strain curves, the C-section Steel Reinforced concrete short Columns were analyzed inthe working mechanism.(2) The numerical simulation research of the C-section Steel Reinforced concrete shortColumns.On the basis of the test, the C-section Steel Reinforced concrete short Columns werenumerical simulation researched by using the finite element software ANSYS. Through thegeneral processor, the displacement、stress and strain contours of the Columns are gotten andresearched. And the failure process of the Columns were detailed studied contrast with theexperiment. At last, the load-displacement curves calculated from the finite element analysisare in accordance with the experiment.