Author(s): Jeffrey A. Melby; Gary L. Howell

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Abstract: Prototype loadings on breakwater armor units were, until recently, unknown. Therefore, there exists no rigorous design procedure for concrete armor units that includes both hydraulic stability and structural strength considerations. Prototype static stresses in dolosse on the Crescent City breakwater in California show that the static response of the large concrete armor units consumes most of the structural strength. There is little residual strength in large slender dolosse to withstand pulsating and impact loads. The long-term variations of static response of dolosse show that wedging forces, developed as the dolosse become nested, are significant and increase with time. This phenomenon alone could ultimately lead to failure of the brea kwater. Finally, these results are incorporated into an outline of a dolos design procedure.

DOI:

Year: 1989