Impact force models for bridge under barge collisions

Chen, Tao; Wu, Hao; Fang, Qin

doi:10.1016/j.oceaneng.2022.111856

Cited by 15 publications

(2 citation statements)

References 30 publications

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“…During the past two decades, several FE numerical studies have been performed to investigate the impact load from barge impacts and the factors affecting it, such as speed, pier column shape and width, vessel weight, and bow stiffness (e.g., [ 3 , 9 – 20 ]) The main focus of these studies was to propose and validate a simplified model to predict the magnitude of the impact load. The most versatile studies were performed by a research group at the University of Florida, in which they used the experimental impact tests at St. George Island Causeway Bridge to calibrate and validate FE numerical models for the barge impact problem developed in LS-DYNA software ( 9 , 10 ).…”

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confidence: 99%

“…They proposed a design procedure to evaluate the dynamic response of the UHPFRC-strengthened columns. Chen et al ( 19 ) developed FE models to simulate the impact of six barges with different sizes and study the effect of the geometric effects the barges on the bridge response. In their FE model, the barges were modeled using four-node shell elements and the bridge structures (pier, girder, and piles) were modeled using beam elements.…”

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confidence: 99%

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Numerical Simulation of a Barge Impact on Bridges with Different Configurations of Pile Group Foundations

Abu-Farsakh

Souri²,

Voyiadjis

2023

Transportation Research Record: Journal of the Transportation R

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Three-dimensional finite element dynamic analyses were conducted to evaluate the effect of barge impact of different speeds on the lateral performance of three pile group (PG) configurations (vertical, battered, mixed) in terms of peak lateral displacement, peak shear force, lateral stiffness of PGs, and contribution of piles and pier columns to the total resisting force. The concrete material was modeled using the Concrete Damaged Plasticity model. The clay behavior was described using the Modified Cam Clay model; while the sand was modeled using the Drucker Prager model. The results showed that the vertical PG had the lowest lateral stiffness; while the battered and mixed PGs had closely larger stiffness, which allowed the development of larger impact force and pile cap displacement in vertical PG as compared to other PGs. The results of shear force showed that the foundation contributed up to 82% of the total lateral force in battered and mixed PGs. The results also showed that in vertical PG, the first row had slightly higher percentage of lateral force compared to other rows; while in battered PG, the load percentage was evenly distributed between rows. A contrast performance was observed for mixed PG. The results of bending moment (BM) showed that the piles in vertical PG had notably higher BM than the piles in other PGs due to larger pile cap displacement. In all PGs, the piles in the edge column had higher BM ratio, with the leading row (L) had the highest BM ratio (69–72%) in all PGs.

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