Abstract
Spiral steel pipes are relatively economical compared with bending roll pipes which are commonly used as steel bridge piers of highway bridges because they are produced in large quantities in factories. However, the mechanical features of spiral steel pipes including seismic performance may be different from those of bending roll pipes. In this study, cyclic loading experiments and FEM analysis were conducted for grasping the elasto-plastic behavior of hollow spiral steel pipes. Based on the experimental and analysis results, the seismic performance of hollow spiral steel pipes under compressive axial force and cyclic bending moment were examined and it is found that the seismic performance of hollow spiral steel pipes are similar to that of hollow bending roll pipes and it is possible to evaluate the seismic performance hollow spiral steel pipes adequately by the seismic evaluation method described in the seismic design specifications for highway bridges.
