Destructive impact forces imparted by ships approaching or leaving a mooring facility, while mooring or during berthing periods are of primary concern in the design of such facilities. To prevent intolerable mechanical damages to both the vessel and the berthing facility, marine fendering systems are utilized to minimize impact energy being transmitted to the supporting structure. A brief description of the classification, design features, and energy absorption characteristics for the more conventional fendering systems, as well as ship-fender impact modes precedes the analytical treatment of the structure interaction problem. The basic formulas for evaluating ship impact energy is presented and proposed design energy criteria are compared with existing criteria. Basic relations of energy absorbing capacities are presented relative to 3 conventional fenderpile arrangements: a) cantilever type, b) rigid wharf type, and c) jetty type. The relevant machinical properties of steel, reinforced concrete, common timber, and greenhart are summarized and the relative merits of these materials to fender supporting structure applications are discussed and tabulated in quantitative form. Simplified energy-design formulas are presented and operationally demonstrated through a design example.

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Filing Info

  • Accession Number: 00048031
  • Record Type: Publication
  • Source Agency: National Maritime Research Center, Galveston
  • Report/Paper Numbers: 2875 Proceeding
  • Files: TRIS
  • Created Date: Oct 31 1973 12:00AM