Analysis on the Collision Couple between Drift Ice and Long-Span Prestressed Concrete T-Rigid Frame Bridge Pier

Zhang, Jian Min; Yuan, Zheng Guo; Wu, Ying Ping

doi:10.4028/www.scientific.net/kem.648.17

Cited by 2 publications

(1 citation statement)

References 1 publication

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“…The symmetrical penalty function method is adopted in the calculation, and the contact type is ASTS (the automatic contact between surface and surface) of the two-way contact. 40,41…”

Section: Calculation Of the Ice Impact Loadsmentioning

confidence: 99%

Running safety evaluation of high-speed train subject to the impact of floating ice collision on bridge piers

Han

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part F:

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In Northeast China and the areas along Sichuan-Tibet railway, collision between floating ice and piers of railway bridges seriously threatens the train operation safety. The safety of high-speed train running on the bridge subject to the impact of floating ice collision is rarely assessed considering the spatial interaction of the train-track-bridge-ice system. To evaluate the running safety and ride comfort of trains and the structural stability of railway bridges under the collision between floating ices and piers, a train-track-bridge (TTB) dynamic interaction model considering the impact of floating ice is established. Using the refined finite element model, the collision process of floating ice on bridge pier is simulated, and the impact loads are employed as the excitation input of the TTB dynamics model. Taking a 5 × 32 m simply-supported bridges as a case study, the influence of bridge structural parameters on the floating ice collision system is investigated, and then the dynamic responses of the TTB system induced by the floating ice impact loads are analyzed in detail. Finally, the effect of the ice impact loads on the running safety of the high-speed train is revealed. Results show that under the floating ice impact loads, the angle of the pier sharp-nose (APSN) and lateral stiffness of foundations are the key parameters that influence the dynamic responses of the bridge, and an improperly small lateral stiffness of foundation would lead to an instability of bridge structure. The influence of ice impact loads on the dynamic responses of the train is remarkable. The lateral vibration acceleration, derailment factor and lateral wheel rail force caused by the ice impact loads are all greater than those caused by the track irregularity, while the wheel unloading rate is slightly smaller. In addition, the running speed of train is also closely related to the running safety and ride comfort when the collision occurs. When the train speed exceeds 400 km/h, the train passing through the bridge would have the possibility of derailment.

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“…The symmetrical penalty function method is adopted in the calculation, and the contact type is ASTS (the automatic contact between surface and surface) of the two-way contact. 40,41…”

Section: Calculation Of the Ice Impact Loadsmentioning

confidence: 99%

Running safety evaluation of high-speed train subject to the impact of floating ice collision on bridge piers

Han

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part F:

View full text Add to dashboard Cite

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Morphology and Effect of Load on Bridge Piers Impacted by Continuous Sea Ice

Gong,

Cui,

et al. 2024

JMSE

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In order to study the collision of sea ice on bridge piers of a sea-crossing bridge, this study establishes a finite element model of the impact of sea ice on bridge piers in aqueous media based on explicit dynamics analysis software and programming software using the arbitrary Lagrangian Eulerian (ALE) method. The results show that, when the sea-ice spacing is larger than the sea-ice edge length, the increase in sea-ice spacing leads to a decrease in the collision force and a significant increase in the probability of climbing and overturning. The increase in sea-ice mass significantly increases the impact force on the bridge abutment, and the peak value increases linearly with the increase in mass, and the sea-ice climbing and overturning phenomena are obvious. Different shapes of sea ice are obtained by cutting the sea-ice field with the two-dimensional Voronoi method, and the maximum impact force increases significantly with the increase in the average area. Irregularly shaped sea ice leads to a larger impact force and triggers the accumulation climbing phenomenon, which is verified by experiments, and the experimental values are in good agreement with the simulated values. In conclusion, this study reveals the significant effects of the spacing, mass, and shape of sea ice on the impact force of bridge piers, which provides an important reference for the design of bridge structures.

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Analysis on the Collision Couple between Drift Ice and Long-Span Prestressed Concrete T-Rigid Frame Bridge Pier

Cited by 2 publications

References 1 publication

Running safety evaluation of high-speed train subject to the impact of floating ice collision on bridge piers

Running safety evaluation of high-speed train subject to the impact of floating ice collision on bridge piers

Morphology and Effect of Load on Bridge Piers Impacted by Continuous Sea Ice

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