River bend sediment management using modified triangular vanes

IF 1 4区工程技术 Q3 ENGINEERING, MULTIDISCIPLINARY

Journal of the Chinese Institute of Engineers Pub Date : 2023-04-03 DOI:10.1080/02533839.2023.2194924

Mahmood Shafai Bejestan, Mohsen Dorosti, Farshid Amirsalari Meymani, Mohammad Bahrami Yarahmadi

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引用次数: 0

Abstract

ABSTRACT Triangular vanes (TVs) are among the flow pattern correction structures which have recently been considered environmentally friendly structures against river bend bank erosion. However, the scour around the structure’s tip may cause its failure. On the other hand, it has been shown that the use of slot in the bridge pier and bridge abutment is effective in reducing scour depth, hence in this study, the effect of four different positions of rectangular slot on TV: Case 1) near the TV’s tip, parallel to the vane’s chord and close to the bed; Case 2) near the outer bank, parallel to the vane’s chord and close to the water surface; Case 3) horizontally and near the bed and Case 4) vertically and near the outer bank is experimentally studied in a 90° mild bend flume. The maximum scour depth (ds), and the point bar height at the end of experiments were compared with the case of no slot (Case 0). The best performance in reducing ds was obtained for Case 1 and then Case 3 with 24% and 19% reduction compared to Case 0, respectively. Poor performance was found for Case 2.

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改良三角叶片对河曲沉积物的治理

摘要:三角叶片(tv)是最近被认为是防止河湾侵蚀的环保结构之一。然而，结构尖端周围的冲刷可能导致其破坏。另一方面，在桥墩和桥台中使用槽位可以有效地减少冲刷深度，因此在本研究中，矩形槽位在电视上的四种不同位置的影响:情况1)靠近电视尖端，平行于叶片弦，靠近床;情况2)靠近外岸，与叶片弦平行，靠近水面;在90°缓弯水槽中，实验研究了水平方向靠近河床的情况3和垂直方向靠近外岸的情况4。与无槽情况(case 0)相比，最大冲刷深度(ds)和试验结束时点条高度(ds)的降低效果最好的是case 1，其次是case 3，分别比case 0降低了24%和19%。发现案例2的性能较差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Chinese Institute of Engineers 工程技术-工程：综合

CiteScore

2.30

自引率

9.10%

发文量

审稿时长

6.8 months

期刊介绍： Encompassing a wide range of engineering disciplines and industrial applications, JCIE includes the following topics: 1.Chemical engineering 2.Civil engineering 3.Computer engineering 4.Electrical engineering 5.Electronics 6.Mechanical engineering and fields related to the above.