Expected seismic performance of irregular medium-span simply supported bridges on soft and hard soils

Seismic vulnerability analysis of irregular multi-span concrete bridges with different corrosion damage scenarios

“…The irregularity associated with the substructure of such bridges results in unbalanced seismic demand in piers of varied stiffnesses, where the stiffer piers attract greater seismic inertia forces and ductility demands. A significant deal of research has been dedicated to investigating the seismic behaviour of irregular multi-span RC bridges [21][22][23][24][25][26][27][28][29][30]. The state-of-theart studies on the seismic performance and irregularity criteria of concrete bridges are comprehensively reviewed by Akbari and Maalek [23].…”

Nonlinear dynamic behaviour and seismic fragility analysis of irregular multi-span RC bridges

“…The nonlinear seismic performance analysis of RC bridges with irregular configurations has been widely investigated in the literature [15][16][17][18][19][20][21][22][23][24]. The outcome of previous studies shows that multispan RC bridges with substructure irregularity are more vulnerable than regular bridges.…”

“…The results indicated that increasing the height difference of adjacent bridge piers intensifies the seismic displacement responses of sliding layer, shear alveolar and moveable bearings. Jara et al [19] studied the influence of soil type on the expected damage of piers in irregular RC bridges. They concluded that while the hard soil ground motion records trigger moderate damage in bridge piers, the soft soil records impose severe damage in piers and cause their failure.…”