Accession Number:

ADA620723

Title:

User s Manual for Armor Stone Evaluation Model (ARMOR): Great Lakes Armor Stone Study

Descriptive Note:

Final rept.

Corporate Author:

ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS GEOTECHNICAL AND STRUCTURES LAB

Report Date:

2015-08-01

Pagination or Media Count:

74.0

Abstract:

Protecting entrances to navigation channels or other coastal areas requires evaluating maritime structures that often feature a surface layer of armor stones, such as rubble-mound breakwaters and jetties. Armor rocks are impacted by natural elements such as seasonal weather and repeated cycles of temperature, flowing water, wetting and drying, wave action, and freeze and thaw. The Armor Stone Evaluation ARMOR numerical simulation model consists of stone deterioration software developed to integrate field observations with numerical tools, and it provides an assessment of stone performance during the life of the rubble-mound structures. The ARMOR software has several numerical models that predict degradation as rocks are impacted by nature. The software includes a statistical technique homogeneity index to characterize rock heterogeneity. Two numerical approaches have been developed to calculate freezethaw cycles using long-term site weather data. The software also provides a model to estimate armor weight and thickness, minimum crest width, and number of armor units per unit of area. The calculation uses varying values for the seaward slope and wave height by application of the Hudson formula for rubble-mound structure stability. The degradation model relates laboratory results to modification of mass distribution and reduction at the project site. This report provides instructions for creating input data and running different options of the program. ARMOR software is distributed on CD or DVD and may be obtained from Dr. Mansour Zakikhani, U.S. Army Engineer Research and Development Center, Environmental Laboratory, 3909 Halls Ferry Road, Vicksburg, MS, 39180 Mansour.zakikhaniusace.army.mil phone 601-634-3806.

Subject Categories:

  • Numerical Mathematics
  • Computer Programming and Software
  • Civil Engineering
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE