Chapter 2: Positioning of the Subject

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Chapter 2: Positioning of the Subject

  1. 1. Chapter 2: Positioning the subjectct5308 Breakwaters and Closure DamsH.J. VerhagenFebruary 1, 2012 1Faculty of Civil Engineering and GeosciencesVermelding onderdeel organisatieSection Hydraulic Engineering
  2. 2. Focus on:• Technical aspects• Technical impacts onlyFebruary 1, 2012 2
  3. 3. Breakwaters and Closure dams• Comparable items: • similar materials • similar execution methods• Differences: • load difference (wave action vs. currents) • life timeFebruary 1, 2012 3
  4. 4. Characteristic values Type of structure H/dn Sandy beach >500 Gravel beach 20-500 Rock slope 6-20 Berm breakwater 3-6 (Stable) rubble mound breakwater 1-4 caisson <1February 1, 2012 4
  5. 5. mound breakwater typesFebruary 1, 2012 5
  6. 6. Monolithic breakwater typeFebruary 1, 2012 6
  7. 7. Sometimes vertical wall is only option Cardiff Barrage 14 m tidal range (situation at high waterFebruary 1, 2012 7
  8. 8. Composite breakwater typesFebruary 1, 2012 8
  9. 9. Special breakwater typesFebruary 1, 2012 9
  10. 10. Floating breakwater in Italy(Marina di Verbania, Lago Maggiore)February 1, 2012 10
  11. 11. Floating breakwater in ItalyFebruary 1, 2012 11
  12. 12. Floating breakwater in ItalyFebruary 1, 2012 12
  13. 13. Vertical screens(Royal Prince Alfred Yacht Club, Sydney, Australia)February 1, 2012 13
  14. 14. Basic methods of closureFebruary 1, 2012 14
  15. 15. Closure named after topographyFebruary 1, 2012 15
  16. 16. Closures named after hydrologicconditionsFebruary 1, 2012 16
  17. 17. closures named after materials used• stacking up willow mattresses (opzinken)• sand closure• clay or boulder clay closure• stone dam closure (rock closure)• caisson closureFebruary 1, 2012 17
  18. 18. Pluimpot, TholenFebruary 1, 2012 18
  19. 19. sand closureFebruary 1, 2012 19
  20. 20. AfsluitdijkFebruary 1, 2012 20
  21. 21. rock closureFebruary 1, 2012 21
  22. 22. caisson closureFebruary 1, 2012 22
  23. 23. Rubble mound breakwater atCittavecchiaFebruary 1, 2012 23
  24. 24. Breakwater at CherbourgFebruary 1, 2012 24
  25. 25. Breakwater at PlymouthFebruary 1, 2012 25
  26. 26. Monolithic breakwater at DoverFebruary 1, 2012 26
  27. 27. Breakwater at MarseillesFebruary 1, 2012 27
  28. 28. Typical breakwater along theMediterranean coastFebruary 1, 2012 28
  29. 29. Historical closures• Rhine damming (Wijk bij Duurstede)• Sloe closure (pakwerk)• HindeburgdamFebruary 1, 2012 29
  30. 30. Walcheren, four gaps on one islandFebruary 1, 2012 30
  31. 31. Development of erosion gulliesFebruary 1, 2012 31

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