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Vermelding onderdeel organisatie
May 2, 2012
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Breakwater rehabilitation Pointe Noire
2011 Exercise ct 5308 – breakwaters and closure dams
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Location of Pointe Noire
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Location (2)
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Location (3)
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The breakwater
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Hydrographic map
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The new terminal
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The assignment
Existing 1968 breakwater
300 m extension
Container terminal
Access channel
Inner harbour
type of breakwater:• Rock armour• Antifer cubes• Core-Loc• Dolos• Xbloc• Berm Breakwater• Caisson
Location of cross section• rehab existing part• extension part
Design life• 20 years• 50 years
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Your assignment
The design of the rehabilitation of the breakwater has the following objectives:
• Design a cross section for either the extension or for the part in front of the container terminal
• Describe how you would build this breakwater
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Information
• Hydrographic charts Map Room• Tides Internet sites• Waves Argoss and Global Wave Statistics
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Argoss data
Two websites available:• Group A to O: http://www. waveclimate.com• Group P to U: http:// smart4.argoss.nl
Usernames: VerhagenA ……. VerhagenEPassword: DUT2011
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Nearshore model from Argoss
• Long computational time• Limited number of users
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Argoss Bathymetry
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Global wave statistics
• http:// studoc.tudelft.nlvkc-water www. kennisbank-waterbouw.nl
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Global wave statistics
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Tidal information
• http://www.shom.fr
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your assignment
• Design a breakwater cross section (A or B)• With the given material (rock, Xblock, etc)• For a maintenance free breakwater• With a life time of 20 years or 50 years
• Determine armour unit size • Determine overall sizes of cross section (e.g. crest
height)• Make a drawing good enough for a cost estimate• Design toe, etc.
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Type of calculation
• Determine near shore boundary data with SwanOne• Use classical approach, and preferably also PIANC
approach and probabilistic approach• Use Breakwat and/or Cress for calculations• Make a short report (5 pages of text) including some
info on the execution method
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Source of PIANC reports
• http:// studoc.tudelft.nlvkc-water www. kennisbank-waterbouw.nl
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PIANC reports in repository
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Presentation
• Give a presentation of approx. 10 minutes next week; also 5 minutes are available for questions per group
• Do not present obvious information (everyone will know where Pointe Noire is)
• Morning groups start at 8:30• Afternoon groups start at 13:00• You have to be present either in the morning, or in the
afternoon (thus not the whole day)
Your assignment
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Your mark
• depends on the quality of the report• depends on the quality of your presentation• depends on the quality of the questions you ask to
other groups
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Good Luck !!
a recent, uninvited beach visitor in Pointe Noire (7 m long)
