Nonlinear analysis of FRP-concrete-steel solid columns

In order to study the axial compression performance of FRP (fiber reinforced polymer)-concrete-steel solid columns (FCSSC), nonlinear analysis program FCSSC was compiled in this paper. The verified by existing tests, and impacts tube thickness, steel outer radius tube, strength concrete were examined. outcomes showed that calculated results agreed with experimental results. It demonstrated way could precisely reflect strain under various degrees load gauge a ultimate FCSSC. increment on bearing capacity chiefly reflected initial stiffness. improvement thickness provide greater constraining force. expand at inflection point load-longitudinal curve. research can give reference use new structure.