Thin-Walled Steel Tubular Circular Columns with Uniform and Graded Thickness under Bidirectional Cyclic Loading

Numerical evaluation of seismic performance of corrugated-plate shaped steel tubes

“…In the last few decades, thin-walled steel structures have been widely applied in engineering structures owing to their favorable seismic performance in regions which are exposed to severe earthquakes [1][2][3][4][5]. Due to their high strength, light-weight, ductility, and torsional rigidity, thin-walled steel structures are used in numerous modern applications such as urban highway bridge systems where the constructional space is limited [2][3][4][6][7][8][9]. In the event of heavy earthquakes, thin-walled steel tubular cantilever bridge piers are vulnerable to local and overall interaction buckling damage [1][2][3][4]9].…”

“…Due to their high strength, light-weight, ductility, and torsional rigidity, thin-walled steel structures are used in numerous modern applications such as urban highway bridge systems where the constructional space is limited [2][3][4][6][7][8][9]. In the event of heavy earthquakes, thin-walled steel tubular cantilever bridge piers are vulnerable to local and overall interaction buckling damage [1][2][3][4]9]. Consequently, a significant degradation in the load-bearing capacity and ductility takes place [1][2][3][4]10,11].…”

“…In the event of heavy earthquakes, thin-walled steel tubular cantilever bridge piers are vulnerable to local and overall interaction buckling damage [1][2][3][4]9]. Consequently, a significant degradation in the load-bearing capacity and ductility takes place [1][2][3][4]10,11]. Such bridge piers are affected by radius-to-thickness ratio parameter/widthto-thickness ratio parameter, and slenderness ratio parameter [1][2][3][4]9].…”

“…Consequently, a significant degradation in the load-bearing capacity and ductility takes place [1][2][3][4]10,11]. Such bridge piers are affected by radius-to-thickness ratio parameter/widthto-thickness ratio parameter, and slenderness ratio parameter [1][2][3][4]9]. Since the late 1950s, the introduction of the corrugation to the structural members have been attracted more attention in aerospace, nuclear reactors, transportation, and civil engineering structures including buildings and bridges [12,13].…”

“…Since the late 1950s, the introduction of the corrugation to the structural members have been attracted more attention in aerospace, nuclear reactors, transportation, and civil engineering structures including buildings and bridges [12,13]. Many studies have revealed the efficiency of the corrugated structures over circular and rectangular cross-sections in energy absorption, weight reduction and stiffness improvement which are high demand in the event of severe earthquakes [1][2][3][4]12,14].Moreover, the manufacture or fabrication process of the corrugated structures becomes more affordable with advanced manufacturing technology such as 3D-printing technology [12]. Therefore, cor-rugated thin-walled steel tubular columns are believed to have an improvement in the overall seismic performance including the load-bearing capacity and the local buckling under seismic loadings.…”