A three-dimensional computational analysis of bridges subjected to monochromatic wave attack

作者：Crowley Raphael; Robeck Corbin; Dompe Philip

来源：Journal of Fluids and Structures, 2018, 79: 76-93.

DOI：10.1016/j.jfluidstructs.2018.02.001

• Wave loading
• Hurricane bridge failure
• Computational fluid dynamics
• Hurricane forcing

A modeled bridge subjected to monochromatic wave train attack was computationally modeled in three dimensions using commercially available software. A number of slightly different geometric variations were computed to learn more about the high-frequency forcing component and to further investigate venting as a mitigation procedure for low lying bridges vulnerable to wave attack. Results appeared to show that the high-frequency component is the result of a combination of reflective effects and trapped air. Additionally, the vertical quasi-static force also appears to be partially caused by trapped air. Transverse venting was investigated as a means to reduce high-frequency forces on the bridges, and these measures appear to be highly effective. Finally a two-dimensional comparison was conducted. Results appear to indicate that while two-dimensional modeling provides valuable insight into the physics associated with this problem, it may miss effects due to lateral air movement.

• 出版日期2018-5