抄録
In order to verify the mechanical characteristics for a composite bridge column consisting of steel pipes with outer ribs, precast concrete segments and filledin concrete, we conducted a cyclic horizontal loading test. The results of the test are :
1) This structure has equivalent ultimate strength and superior ductility as compared with a conventionally reinforced concrete structure.
2) The steel pipes with outer ribs are finely adherent to the concrete, and the observed strain distribution of cross sections are linear to the distance from neutral axis.
3) Displacement and strength capacities in yeild and ultimate states can be computed taking into account steel pipes as equivalent rebars.
