SHAO Junhu,ZHAN Yulin,CHEN Ning,et al.Nonlinear Dynamic Response and Damage Characteristic Analysis of RC Pier under Barge Collision[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(01):81-91.
SHAO Junhu,ZHAN Yulin,CHEN Ning,et al.Nonlinear Dynamic Response and Damage Characteristic Analysis of RC Pier under Barge Collision[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(01):81-91. DOI: 10.13409/j.cnki.jdpme.202003018.
Nonlinear Dynamic Response and Damage Characteristic Analysis of RC Pier under Barge Collision
Regarding frequent accidents of ship-bridge collisions around the world, a finite element model of barge-pier collision was established to study the dynamic response and damage characteristics of the pier under barge impact. The reliability of the finite element model is verified by comparing it with the results of the previous drop impact test. Based on the finite element model,the dynamic response and damage evolution mechanism of piers under 1000 t barge collision at the speed of 4 m/s are investigated, and the influence of impact velocity, impact tonnage, impact point and axial compression ratio on the damage characteristics is studied. The results show that the most disadvantageous positions is the pier bottom and collision point area; the yield strength of rebar is improvedby 11.7%~22% due to the strain rate effect, which increases the resistance of the pier;the collision velocity and tonnage can affect the damage degree of the pier, but do not affect the damage characteristics of the pier; the damage degree and characteristics are changed by the impact point and the axial compression ratio; the resistance of piers increase with decreased impact points and increased axial compression ratio.
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