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The Rehabilitation of North Breakwater of Nazaré Harbor, Portugal

Santos-Ferreira, Alexandre; Cabral, Mónica; Santos, Cláudia

Procedia engineering. Volume 116 (2015); pp 755-762 -- Elsevier Science

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  • Title:
    The Rehabilitation of North Breakwater of Nazaré Harbor, Portugal
  • Author: Santos-Ferreira, Alexandre;
    Cabral, Mónica;
    Santos, Cláudia
  • Found In: Procedia engineering. Volume 116 (2015); pp 755-762
  • Journal Title: Procedia engineering
  • Subjects: Engineering--Congresses; Engineering--Periodicals; Conference proceedings; Engineering; Periodicals; Breakwater--wave--fluidification--tetrapode--antifer ; Dewey: 620.005
  • Rights: legaldeposit
  • Publication Details: Elsevier Science
  • Abstract: Abstract:

    The north breakwater protecting the Nazaré harbor was severely damaged during the storms of the 2012-2013 and 2013-2014 winters, with the complete destruction of the structurés head, and about 30m of its body.

    This structure is founded in a sandy foundation, and quite near of Nazaré canyon. The head and the immediate part of the breakwater body were protected with a double layer of 40 ton tetrapods on a layer of 5-12ton rock blocks.

    A topographic survey of the nearby sea floor showed a change in a secondary branch of the underwater canyon; which could justify the destruction of the breakwater head, as the original design considered a maximum wave 9 m high; a new analysis indicate a correct value for the design wave should be now 14 m.

    Consequently the rehabilitation design considered then a 14 m design wave, and the protection of the breakwater head was redefined as a double layer of 50 ton antifer blocks, with a density of 70%. The protection of the reconstructed body considered the recovering and reutilization of the 40 ton tetrapods that were recovered.


  • Identifier: System Number: LDEAvdc_100072105020.0x000001; Journal ISSN: 1877-7058; 10.1016/j.proeng.2015.08.361
  • Publication Date: 2015
  • Physical Description: Electronic
  • Shelfmark(s): ELD Digital store

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