Performance Evaluation of Highway Bridge Piers under Medium Truck Collision Combined with Air Blast

Multi-Hazard-Resistant Behavior of CFRP- and Polyurea-Retrofitted Reinforced Concrete Two-Column Piers under Combined Collision–Blast Loading

“…Materials 2023, 16, x FOR PEER REVIEW 6 of frame [24,31]. The simulated results matched reasonably well with the tested results.…”

“…The Ford F800 single-unit truck (SUT) model with a total mass of 8000 kg impacted the dual-column piers along the longitudinal axis at specified velocities. Segment-based, penalty-type contact was used to model the interaction between the SUT and the pier using the Contact Automatic Surface-to-Surface formulation, and the static and dynamic friction coefficients were set to 0.3 [ 24 , 31 ]. The air blast was simulated from the TNT detonation and blast wave in the air using MM-ALE formulation in LS-DYNA.…”

“…The numerical modeling accuracy was examined by comparing the simulated results against published impact and blast tests in the open literature. Two experimental tests were used to validate the bare RC pier modeling approaches, including a drop hammer impact test on RC beams and a reduced-scale blast test of an RC column from a building frame [ 24 , 31 ]. The simulated results matched reasonably well with the tested results.…”

“…The simulated results matched reasonably well with the tested results. The validation results were provided in the previous studies by the authors [ 24 , 31 ]. For the retrofitted RC piers, validation of selected modeling techniques involved comparing predictions against results from two separate experimental studies of CFRP-wrapped RC structural components subjected to impact and blast loads.…”