| Zdroj: |
Rouck, J D, Troch, P, Walle, B V D, Meer, J V D, Damme, L V, Medina, J R, Willems, M, Frigaard, P & Kofoed, J P 2001, Wave Run-Up on a Rubble Mound Breakwater : prototype measurements versus scale model tests . in E Özhan (ed.), Proceedings of the 5th Int. Conf. on the Mediteranean Coastal Environment : Oct. 2001, MEDCOAST-01, Hammamet, Tunisia . vol. 3, National Institute for Marine Science and Technology Coastal Management and Protection Agency, The 5th International Conference on the Mediteranean Coastal Environment : MEDCOAST-01, Hammamet, Tunisia, 23/10/2001 . |
| Popis: |
Physical processes such as wave run-up and wave overtopping are very important with regard to the design of sloping coastal structures. However, these are not yet fully understood. Preliminary prototype measuring campaigns (1993-1996) indicated clearly higher wave run-up values than the values found by laboratory testing and reported in literature. The design of the crest height of a breakwater is mainly based on wave run-up values obtained by small scale model tests. Prototype measurements are seen as the big challenge to be addressed to verify small scale model test results. Therefore, a rubble mound breakwater protecting the outer harbour of Zeebrugge (Belgium) and armoured with 25 ton grooved cubes is fully instrumented to measure sea state, wave run-up and wave overtopping. Wave run-up is measured by two different measuring devices. Extensive laboratory testing is carried out on two t-o dimensional models (1:30) and on one thr-e dimensional scale model (1:40). For a better determination of wave run-up on the scale models, a novel step gauge is developed. Still, differences between results of prototype measurement and small scale model test results and between the various laboratory results are noticed. |
