Lessons learned from vehicle collision accident of Dongguofenli Bridge: FE modeling and analysis

Sun, Wenjuan; Fan, Wei; Yang, Cancan; Peng, Weibing

doi:10.1016/j.engstruct.2021.112813

Cited by 19 publications

(1 citation statement)

References 26 publications

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“…This discrepancy can be attributed to the fact that the cargo in the FE model was represented as a solid elastic material, whereas in the actual test, the trailer was loaded with sand bags. Continuum cargo, such as the solid elastic material used in the FE model, typically generates a higher impact force and a shorter impact duration compared to granular cargo like sand (Sun et al, 2021). However, it should be noted that this is still acceptable as continuum cargo is commonly encountered in real-life scenarios.…”

Section: Heavy Vehicle Modelmentioning

confidence: 99%

Strengthening reinforced concrete bridge piers against heavy vehicle collisions with ultra-high performance concrete collars: A finite element analysis study

Qu,

Farzaneh,

Jung

et al. 2024

Advances in Structural Engineering

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This paper investigates the effectiveness of ultra-high performance concrete (UHPC) collars in strengthening reinforced concrete (RC) bridge piers against heavy tractor-trailer collisions through finite element (FE) analysis. First, validated FE models of UHPC and a heavy tractor-trailer were provided. Then, FE analyses were conducted to evaluate the strengthening performance of the UHPC collar. The effectiveness of UHPC collar was compared with conventional RC collar, and the effects of varying UHPC collar thickness, height, and collar reinforcement were investigated. The results showed that the most severe damage observed on bridge piers due to heavy vehicle collisions primarily occurred below a height of approximately 2000 mm, manifested as diagonal shear cracks and plastic hinges. Therefore, the recommended minimum collar height is 2000 mm. The comparison between UHPC collar and RC collar strengthening demonstrated the superior effectiveness of UHPC collars. A 130-mm UHPC collar exhibited a similar strengthening effect as an 180-mm RC collar. Among the three investigated parameters of UHPC collar thickness, height, and collar reinforcement, the study found that collar thickness had the most significant influence on the effectiveness of the UHPC collar in terms of damage pattern, energy absorption, and maximum deflection. While collar height primarily influenced deflection, a larger collar height was beneficial in reducing pier deflection at the end of the strengthened segment. Adding a small amount of collar reinforcement improved the performance of piers; however, this improvement was limited. The findings of this study address the lack of research on using UHPC for strengthening full-scale bridge piers against heavy tractor-trailer collisions and provide valuable references for future designs with similar applications.

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Section: Heavy Vehicle Modelmentioning

confidence: 99%