Abstract
In order to improve the seismic performance of highway's steel piers and to reduce the environmental pollutions, a series of fundamental researches on the mechanical behaviors of PUFA (Poly Urethane mixed Fly Ash) have been performed by authors.
This study presents the analytical results for cyclic loading test conducted for steel columns filled by PUFA, FEM method is based on non-linear characteristics of steel and PUFA and the boundary condition between PUFA and steel column proposed suggested by authors. The propriety of this FEM method was inspected by comparison of analysis values and examination ones, which are P-δ curve, and the progressing of local buckling occurred in the bottom of steel pipe. Lastly, the non-linear characteristics of this kind hybrid structure filled by PUFA with different densities were clarified by numerical analysis.
