Abstract :
 

The current work presents a unique study on the seismic performance of innovative corrugated-plate steel bridgepiers. While several previous research was conducted on steel tubes with cross sections such as rounded or semitriangular plates, the seismic performance of such structural members with straight ribbed corrugation geometryunder uniaxial cyclic loading remained a research gap. Thus, this research aims to present a new concept that couldadd a promising design to steel tubes under seismic effect. The seismic performance of such piers was numericallyinvestigated in terms of the load-bearing capacity and local buckling. ABAQUS was employed to accomplish a seriesof finite element analyses on corrugated-plate steel bridge piers under constant axial dead load and lateral cyclicdisplacement. Three different geometries of corrugated-shaped steel tubes (i.e., C60, C80, and C146 mm deep)along with four different thicknesses (i.e., 6, 8, 10, and 12 mm) were investigated and compared to the traditional circular-shaped steel tubes (i.e., Cir) having same thicknesses and outer diameter. The results revealed that the innovativecorrugated-plate steel bridge piers offered 20% greater load-bearing capacity and 66% more ductility comparedto their companions of circular-shaped steel tubes. It was interesting to notice that the peak value of the load-bearingcapacity of the C146 column was greater than those of the C80 and C60 columns by 7% and 10%, respectively.Furthermore, the local buckling was generally seen less severe amongst corrugated-plate steel bridge piers. Thisresearch raises the importance of corrugated-plate sections used in bridge piers over circular shapes owing to theiradvantages in strength and aestheticism.