dynamic analysis of balanced cantilever concrete bridges with different pier heights under near-field ground motions

The selected bridge is a balanced cantilever concrete bridge having three spans of 37, 68 and 37 meter and is constructed using form traveller method as shown in figure 1-a. construction begins at each bridge pier. the deck section height varies from 4.03 m at the pier location to 2.03 m at the middle of main span in parabolic form, figure 1-b. the deck is implemented continuously with the middle piers and seats on elastomeric bearings at each end. the height of themiddle pier is 18 m. the pier section is considered wall type pier with 1.5 m thickness. the pier section width varies from the 6.5 m at the deck level to 8 m at the base linearly.