Based on the test results of six columns subjected axial loads and compared with that of constant section member,the influence of tapering ration on stable ultimate load-carrying capacity and performance of tapering column under axial loads were analyzed and the displacement curves were presented.

By use of the experimental results of 6 full-scale reinforced concrete axial compression column under elevated temperature on their three surfaces,this paper analyzed the temperature field,experiment appearance and the regularity of deformation under fire,and residual bearing capacity after fire.

In the nonlinear analysis of the axial compression column with plain stirrups,since the stress-strain curve of concrete has the drop section,concrete and steel can not reach the top stress at the same time,and the ultimate capacity of the column isn t the superposition of the two materials.

The simulated experiment is done with high-strength concrete(HSC) axial compression column at high temperature.

Based on the "double-optimization design" concept, schemes of optimum analysis of fire-resistant design for centrally compressed steel column are proposed.

The behavior of reinforced concrete axial compression columns heated on their three surfaces and at different temperatures (20℃ to 950℃ ) were investigated and introduced in this paper.

The reliability of reinforced concrete axial compression columns strengthening with externally bonded angle steel is studied.