BREAKWATERS

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J.C. (Cock) van der Lem M.Sc.Sr. Port EngineerMaritime Advisory Group Rotterdam?Haskoning Nederland B.V.a company of Royal Haskoning George Hintzenweg 85P.O.Box 8520 3009 AM? Rotterdam The Netherlands ?tel. 31-(0)10-4433666 direct 31-(0)10-4433722 mobile 31-(0)6-15006372 fax. 31-(0

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BREAKWATERS

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1. BREAKWATERS By J.W. van der Meer, PhD. CE J.C. van der Lem MSc. CE

2. Contact details

3. Breakwaters February 2011 BREAKWATERS SUBJECTS Rubble mound breakwaters (J.W. van der Meer) Vertical wall breakwaters (J.C. van der Lem) Berm breakwaters (J.W. van der Meer) Submerged breakwaters (J.W. van der Meer)

4. Breakwaters February 2011 Vertical Wall Breakwaters Objectives (end of the course) To be able to make an assessment of hydraulic loads against caisson breakwater To be able to make a preliminary design of a caisson breakwater (length, width, height) To be able to compare caisson breakwater against rubble mound breakwater

5. Breakwaters February 2011 Vertical Wall Breakwaters CONTENTS Day 1 – Introduction, set the problem Day 2 – PROVERBS parameter map (exercise) & design methods (functional requirements) Day 3 – Design methods (static analysis) Day 4 – Design methods (dynamic analysis) Day 5 – Worked example

6. Breakwaters February 2011 Vertical Wall Breakwaters DAY 1 - INTRODUCTION Information (readers) Functions Types Problem definition Design methods (intro)

7. Breakwaters February 2011 Vertical Wall Breakwaters Readers In lecture notes/distributed: Y. Goda, Ch. 4 Design of Vertical Breakwaters (from: Random Seas and Design of Maritime Structures. 1985) S. Takahashi, Design of Vertical Breakwaters (Short Coarse, ICCE, 1996) PIANC; Breakwaters with Vertical and Inclined Concrete Walls, Report WG 28, 2003 G. Cuomo: Wave impacts on vertical sea walls & caisson breakwaters. PIANC On Course Magazine 127 van Mei 2007.

8. Breakwaters February 2011 Vertical Wall Breakwaters Readers (continued) Separate: PowerPoint presentations (el. platform) PIANC WG 28 sub-group reports (el. platform) Overtopping manual: www.overtopping-manual.com Additional reading: Oumeraci, H. et. al.; Probabilistic Design Tools for Vertical Breakwaters (PROVERBS), February 2001 (ISBN 09 5809 248 8 / 249 6) Coastal Engineering Manual The Rock Manual Breakwat (Deltares formerly WL|Delft Hydraulics)

9. Breakwaters February 2011 Vertical Wall Breakwaters - Functions FUNCTIONS Wave protection in port/channel Protection from siltation, currents Tsunami protection Berthing facilities Access/transport facility

10. Breakwaters February 2011 TYPES (breakwaters with vertical and inclined concrete walls) Conventional Vertical Wall Breakwaters - Types

11. Breakwaters February 2011 TYPES (continued) Vertical composite Vertical Wall Breakwaters - Types

12. Breakwaters February 2011 TYPES (continued) Horizontal composite Vertical Wall Breakwaters - Types

13. Breakwaters February 2011 TYPES (continued) Block type Vertical Wall Breakwaters - Types

14. Breakwaters February 2011 TYPES (continued) Piled breakwater with concrete wall Vertical Wall Breakwaters - Types

15. Breakwaters February 2011 TYPES (continued) Sloping top Vertical Wall Breakwaters - Types

16. Breakwaters February 2011 Vertical Wall Breakwaters - Types TYPES (continued) Perforated front wall

17. Breakwaters February 2011 Vertical Wall Breakwaters - Types TYPES (continued) Semi-circular caisson

18. Breakwaters February 2011 Vertical Wall Breakwaters - Types TYPES (continued) Dual cylindrical caisson

19. Breakwaters February 2011 Vertical Wall Breakwaters - Types TYPES (continued) “Combi-caisson”

20. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition What is needed? Proper understanding of functional requirements Proper understanding of loads and resistance Insight in failure modes Understanding of breaking/non-breaking waves

21. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition Functional requirements Access Quay facilities Overtopping Transmission

22. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition Requirements: acces (pedestrians, supply traffic)

23. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition Requirements: acces (harbour workers, traffic, oil piping)

24. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition Requirements: acces (harbour workers, traffic, LNG piping)

25. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition Requirements: acces (harbour workers, traffic, conveyors)

26. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition Requirements: quay facilities (access, warehouses, sheds)

27. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition Requirements: quay facilities (access, warehouses, sheds)

28. Breakwaters February 2011 Vertical Wall Breakwaters - Problem definition Requirement: limit overtopping and transmission

29. Breakwaters February 2011 Vertical Wall Breakwaters - Loads and resistance Loads and resistance Loads: Hydraulic loads Weight Resistance: Friction (mostly) Soil bearing capacity

30. Breakwaters February 2011 Vertical Wall Breakwaters - Loads and resistance Failure modes (overall) Hydraulic failure Geotechnical failure Sliding Overturning Slip

31. Breakwaters February 2011 Vertical Wall Breakwaters - Loads and resistance Failure modes (local) Instability of mound Erosion of seabed Partial Instability

32. Breakwaters February 2011 Vertical Wall Breakwaters - Loads and resistance Example overall failure: Mutsu Ogawara Port, East Breakwater (Japan)

33. Breakwaters February 2011 Vertical Wall Breakwaters - Loads and resistance Example local failure: Catania Breakwater (Sicily, Italy)

34. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Impression of hydraulic forces (field)

35. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Hydraulic Forces (laboratory)

36. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Hydraulic Forces (laboratory)

37. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Aerated impact

38. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Air pocket impact

39. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Flip through impact

40. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Slosh impact

41. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Hydraulic Forces Differentiate between non-breaking and breaking waves Identification of types of horizontal loading by means of the PROVERBS parameter map (distribute)

42. Breakwaters February 2011

43. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) PROVERBS parameter map (also PIANC WG 28)

44. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods PROVERBS parameter map

45. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods

46. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods

47. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods

48. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Example: Sakata Detached Breakwater (Japan)

49. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Example: Sakata Detached Breakwater (Japan)

50. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods

51. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Example: Sakata Detached Breakwater (Japan) What in case of low mound?

52. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods PROVERBS parameter map

53. Breakwaters February 2011 Vertical Wall Breakwaters - Design methods (intro) Hydraulic Forces: evaluation of wave breaking

54. BREAKWATERS To be continued….. (distribute PIANC WG 28 cases and PROVERBS map) Homework: read the PIANC WG 28 case Next course: bring PIANC case, Proverbs map & calculator

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