Field monitoring of ship-induced loads on (alternative) bank protections of non-tidal waterways
De Roo, S.; Van Crombrugge, W.; Troch, P.; Van Acker, J.; Maes, E. (2010). Field monitoring of ship-induced loads on (alternative) bank protections of non-tidal waterways, in: 32nd PIANC Congress, 125th anniversary PIANC - setting the course, Liverpool, UK, Liverpool Arena and Convention Centre, 10 - 14 May 2010: PIANC MMX papers. pp. 10 pp.
In: (2010). 32nd PIANC Congress, 125th anniversary PIANC - setting the course, Liverpool, UK, Liverpool Arena and Convention Centre, 10 - 14 May 2010: PIANC MMX papers. PIANC. UK section: London.
In the seventies, the river Lys was straightened and canalized to allow inland navigation up to CEMTclass IV. Nowadays, on demand of the inland navigation sector, vessels up to CEMT-class Va are allowed as a provisional measure. Due to the intensive navigation the rigid armoured concrete revetment is undermined, which results in progressive bank erosion. To tackle the bank erosion problem, a softer technical-biological revetment type, i.e. off- bank timber piling in combination with (reed)vegetation, is opted for. For a reasonable construction and maintenance cost, environmental benefits are increased and sustainable techniques are attained. But how effective are technicalbiological bank protections in operation?As part of a research project regarding the design of alternative bank protections, we developed a prototype monitoring system along the river Lys at Zulte, Belgium. In 2009, it was initiated and instrumented to acquire field data of the ship wave characteristics, the bank directed slope supply currents and the impact of the ship wave climate on both the conventionally armoured concrete revetment and the technical-biological bank protection. The paper describes the layout of the monitoring system, the applied measurement techniques and the data acquisition process together with the prospects of the ongoing field campaign.
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