Title

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

Document Type

Article

Publication Date

5-1-2018

Subject Area

ARRAY(0x5559817db3b8)

Abstract

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.

Publication Title

Journal of Fluids and Structures

Volume

79

First Page

76

Last Page

93

Digital Object Identifier (DOI)

10.1016/j.jfluidstructs.2018.02.001

ISSN

08899746

E-ISSN

10958622

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