圆柱墩周围索与床基同时使用的冲刷对策效果分析

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-08-03 DOI:10.1680/jwama.21.00043

Ehsan Gerami, Manouchehr Heidarpour, Reza Mohammadpour Ghalati

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引用次数: 0

摘要

研究了在圆柱墩周围同时使用电缆和底台(CBS)的冲刷对策。为了找到减少冲刷深度的最佳CBS组合，对局部冲刷进行了16次实验室评估。这些实验还用于研究湍流结构和泥沙夹带。同时使用CBS的最佳组合可使冲刷深度降低约34%。采用紊流分析方法，对无保护桥墩(参考案例)周围的流动结构和最佳CBS配置进行了比较。利用二维破裂事件来了解桥墩周围流动结构的随机性。湍流特性和爆破事件发生概率证实了CBS组合对减小冲刷深度的作用。此外，在所有爆炸事件中，弹射事件具有最高的跃迁概率。

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Effect of simultaneous use of cable and bed sill scour countermeasures around a cylindrical pier

The simultaneous use of cable and bed sill (CBS) scour countermeasures around a cylindrical pier was investigated. With the aim of finding the best combination of CBS in terms of scour depth reduction, 16 laboratory assessments of local scour were conducted. These experiments were also used to investigate the turbulent flow structure and sediment entrainment. The best combination of simultaneous CBS reduced the scour depth by about 34%. The flow structures around an unprotected pier (reference case) and for the best CBS configuration were compared by employing turbulent analysis methods. Two-dimensional bursting events were used to understand the stochastic nature of the flow structure around the pier. The turbulence characteristics and occurrence probabilities of bursting events confirmed the effect of the combination of CBS on reducing the scour depth. In addition, of all the bursting events, ejection events were found to have the highest transition probabilities.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.