Mechanics and simulations of the groundsill damage due to the impacts from pebbles/cobbles

Yii-Wen Pan, K. P. Leong, Jyh-Jong Liao, C. S. Ku

研究成果: Conference contribution同行評審

摘要

A pebble/cobble passing a head drop tends to carry a large impact momentum when it hits a groundsill; the heavy impact may result in the breakage of concrete. This study explores the mechanics and the principles of this issue by computational fluid dynamics with particle tracking. The results reveal that the kinematics of a single particle passing a head drop is primarily affected by the size of particles. A small particle tends to travel along the flow lines and brings relatively low impact energy. A large particle is more affected by gravity; saltation is more likely and will carry relatively high impact energy. The major role of the discharge magnitude is just to enable the transportation of larger particles to the downstream. With the simulation, it is possible to evaluate the impact position, load and kinetic energy. The locations prone to damage and failure potential can then be identified.

原文English
主出版物標題Scour and Erosion - Proceedings of the 8th International Conference on Scour and Erosion, ICSE 2016
編輯John Harris, Richard Whitehouse, Sarah Moxon
發行者CRC Press/Balkema
頁面1019-1025
頁數7
ISBN(列印)9781138029798
DOIs
出版狀態Published - 1 一月 2016
事件8th International Conference on Scour and Erosion, ICSE 2016 - Oxford, United Kingdom
持續時間: 12 九月 201615 九月 2016

出版系列

名字Scour and Erosion - Proceedings of the 8th International Conference on Scour and Erosion, ICSE 2016

Conference

Conference8th International Conference on Scour and Erosion, ICSE 2016
國家United Kingdom
城市Oxford
期間12/09/1615/09/16

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