BED, BANK & SHORE BED, BANK & SHORE PROTECTION - CHAPTER 12 C potx
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Breakwater
Ocean & Coastal Engineering Faculty
Content
1. Introduction
2. Types of breakwaters
3. Caisson breakwater (vertical wall BW)
4. Revetment breakwater (rubble-mound BW)
5. Summaries
Introduction
• Definitions:
Breakwater is a structure that protects the area in its lee
from wave attack.
• Purpose of breakwaters:
+ To provide shelter from the waves
+ Through this shelter, to manipulate the littoral transport
conditions and thereby to trap some sand
Types of breakwaters
- Detached breakwater (Breakwaters be completely isolated from the shore )
+ Headland breakwaters
+ Nearshore Breakwaters
- Attached breakwater (Breakwaters can be connected to the shoreline)
- Low crested structure
- High crested structure
- Rubble mound structure
- Composite structure
- Emerged breakwaters
- Submerged breakwaters
- Floating breakwater
- Using mass (Caissons)
- Using a revetment slope (e.g. with rock or concrete armour units )
Types of breakwaters
Breakwater in Presque Isle,
Pennsylvania (1994)
Shoreline Breakwater,
Elmer, UK
Low crested structure in UK
Low crested during storm surge,
IJmuiden, NL
- Detached breakwater (Breakwaters be completely isolated from the shore )
+ Headland breakwaters
+ Nearshore Breakwaters
- Attached breakwater (Breakwaters can be connected to the shoreline)
- Low crested structure
- High crested structure
- Rubble mound structure
- Composite structure
- Emerged breakwaters
- Submerged breakwaters
- Floating breakwater
- Using mass
(Caissons)
- Using a revetment slope (e.g. with rock or concrete armour units )
Caisson breakwater
• Definition
• Applicable conditions (cases???)
• Loads (wave loads)
• Cross section design
• Stabilities
• Definition
• Applicable conditions (cases???)
• Loads (wave loads)
• Cross section design
• Stabilities (slope, toe)
