Engineering Commons^™

Probabilistic Seismic Demand Analysis Of A Bridge With Unbonded, Post-Tensioned, Concrete-Filled, Fiber-Reinforced Polymer Tube Columns, Manisha Rai, Mohamed Elgawady, Adrian Rodriguez-Marek

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Ground motions at sites close to a fault are sometimes affected by forward directivity, where the rupture energy arrives at the site in a form of a very short duration pulse. These pulses impose a heavy demand on structures located in the vicinity of the fault. In this research, a probabilistic seismic demand analysis (PSDA) for a self-centering bridge is carried out. The bridge columns consisted of unbonded, post-tensioned, concrete-filled, fiber-reinforced polymer tubes. A bridge model was developed and non-linear time history analyses were performed. Three different methodologies that used spectral accelerations to predict structural responses were used, and a …