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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationScour and Erosion - Proceedings of the 8th International Conference on Scour and Erosion, ICSE 2016
EditorsJohn Harris, Richard Whitehouse, Sarah Moxon
PublisherCRC Press/Balkema
Pages1019-1025
Number of pages7
ISBN (Print)9781138029798
DOIs
StatePublished - 1 Jan 2016
Event8th International Conference on Scour and Erosion, ICSE 2016 - Oxford, United Kingdom
Duration: 12 Sep 201615 Sep 2016

Publication series

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

Conference

Conference8th International Conference on Scour and Erosion, ICSE 2016
CountryUnited Kingdom
CityOxford
Period12/09/1615/09/16

Fingerprint Dive into the research topics of 'Mechanics and simulations of the groundsill damage due to the impacts from pebbles/cobbles'. Together they form a unique fingerprint.

Cite this