Accession Number : ADA140191

Title :   Effects of Dolos Breakage on the Stability of Rubble-Mound Breadwater Trunks Subjected to Breaking and Nonbreaking Waves with No Overtopping.

Descriptive Note : Final rept. Jul 78-Aug 82,


Personal Author(s) : Markle,D G ; Davidson,D D

PDF Url : ADA140191

Report Date : Dec 1983

Pagination or Media Count : 72

Abstract : Experimental tests were conducted to determine the quantity and distribution of broken dolosse that will cause a reduction in the stability of the dolos armor layers (1V-on-1.5H sloped, breakwater trunks) when subjected to their no-damage design, breaking or nonbreaking wave conditions with no overtopping. It was concluded that for the range of test conditions considered: (a) if dolos breakage does not exceed 15% uniform breakage in the top layer, 15% uniform breakage in the bottom layer, 7.5% uniform breakage in both layers (7.5% in the top layer plus 7.5% in the bottom layer), or clusters of 5 broken dolosse, the overall stability of the dolos coverlayers will be very similar to the stability response of a dolos-armored structure with no breakage; and (b) when breakage levels exceed those specified in (a) a structure could either fail catastrophically, have areas of exposed underlayer, and/or have areas with only one layer of dolos armor. The high degree of dolos movement and displacement associated with larger amounts of dolos breakage could cause additional dolos breakage that could ultimately lead to failure of the dolos armor layers. (Author)

Descriptors :   *Breakwaters, *Water waves, Construction materials, Structural engineering, Slope, Armor, Layers, Stability, Damage, Displacement, Failure, Scale models, Model tests

Subject Categories : Marine Engineering
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE