Abstract
The impact force model is critical for the impact-resistant design of bridge piers and rapid assessment of bridge dynamic behaviors under barge impact, which is mainly studied in this paper. Firstly, the refined finite element models (FEMs) and the corresponding material model parameters of barge and pier, as well as the finite element analyses (FEA) approach for barge-bridge collision are validated through the impact test on the reduced-scale replicas of Jumbo Hopper (JH) barge bow and the flexible impactor lateral collision test on the RC column. Then, the prototype barge-bridge collision test is reproduced using the validated numerical algorithm and material model, by assessing the barge bow crushing process and depth, as well as the time histories of barge impact force and pier displacement. Furthermore, by considering the strain-rate of barge and bridge, surrounding water of the barge, soil-pile interaction, inertial effect of superstructure, as well as the nonlinear deformation of barge and bridge, the numerical simulations of total 54 prototype barge impact cases are performed with varied impact velocity and impact mass of barge traveling on inland waterways to assess the dynamic behaviors of both the barge and bridge. Finally, two analytical impact force models, i.e., triangular and multiple linear distributions, are developed based on the FEA results and further validated by another 9 randomly generated impact cases. The proposed impact force models can be directly applied in the rapid assessment of barge impact resistance of bridge piers without needing to build the complex barge models.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call