Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2017WR022177 |
Formation, Growth, and Failure of Debris Jams at Bridge Piers | |
Panici, Diego; de Almeida, Gustavo A. M. | |
2018-09-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:9页码:6226-6241 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The accumulation of large wood debris around bridge piers obstructs the flow, producing increased upstream water levels, large horizontal structural loadings, and flow field modifications that can considerably exacerbate scour. These effects have frequently been held responsible for the failure of a large number of bridges around the world, as well as for increased risk of flooding of adjacent areas. Yet little is currently known about the time evolution and processes responsible for the formation and growth of these debris piles. This paper is aimed at deciphering the whole life of debris accumulations through an exhaustive set of 570 experiments in which debris elements were individually introduced into a flume and accumulated at a pier model downstream. Our findings show that in all experiments, the growth of accumulations is halted at a critical stage, after which the jam is removed from the pier by the flow. This condition typically coincides with the time when the dimensions of the accumulations are maxima. The values of the accumulation maximum size display a clear dependence on flow characteristics and debris length distribution. On the other hand, other variables have shown much weaker effects on the geometry of the accumulations. For a given debris length, accumulations are wide, shallow, and long at low flow velocities but become narrower, deeper, and shorter with increasing velocities. A comparison of results of accumulations formed with debris of uniform and nonuniform size distributions has revealed that the former can be up to 2.5 times wider than the latter. |
英文关键词 | large wood debris flood risk bridge clogging bridge pier debris jam |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000448088100024 |
WOS关键词 | LARGE WOODY DEBRIS ; FIELD ; MODEL |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19988 |
专题 | 资源环境科学 |
作者单位 | Univ Southampton, Fac Engn & Environm, Southampton, Hants, England |
推荐引用方式 GB/T 7714 | Panici, Diego,de Almeida, Gustavo A. M.. Formation, Growth, and Failure of Debris Jams at Bridge Piers[J]. WATER RESOURCES RESEARCH,2018,54(9):6226-6241. |
APA | Panici, Diego,&de Almeida, Gustavo A. M..(2018).Formation, Growth, and Failure of Debris Jams at Bridge Piers.WATER RESOURCES RESEARCH,54(9),6226-6241. |
MLA | Panici, Diego,et al."Formation, Growth, and Failure of Debris Jams at Bridge Piers".WATER RESOURCES RESEARCH 54.9(2018):6226-6241. |
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