Stability of Armor Units on Composite Slopes
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 111, Issue 5
Abstract
Riprap and sandbag model tests are conducted in a wave flume to investigate the effects of berm‐type slopes on the stability of armor units and wave runup as compared to uniform slopes. Measurements of wave runup, rundown, wave height, breaker type and the response of armor units under regular wave action are made for each test run. The uniform and composite slope test results are analyzed using a modified Saville's method which accounts for the overall effects of the slope configuration on the stability of armor units and wave runup. A simple analysis procedure based on the proposed method is developed for a preliminary design of a berm configuration. An example computation is made for a composite slope protected with riprap. The berm width, the berm slope and the water depth at the shallowest point of the berm are varied so as to determine the optimal berm configuration for increasing the stability of riprap under the assumed wave conditions.
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References
1.
Ahrens, J. P., “Large Wave Tank Tests of Riprap Stability,” Technical Memorandum No. 51, U.S. Army Coastal Engineering Research Center, Ft. Belvoir Va., 1975.
2.
Ahrens, J. P., and McCartney, B. L., “Wave Period Effect on the Stability of Riprap,” Proceedings of Civil Engineering in the Oceans/III, ASCE, Vol. 2, 1975, pp. 1019–1034.
3.
Battjes, J. A., “Surf Similarity,” Proceedings of 14th Coastal Engineering Conference, ASCE, Vol. I, 1974, pp. 466–480.
4.
Bruun, P., and Johannesson, P., “Parameters Affecting Stability of Rubble Mounds,” Journal of Waterways, Harbors and Coastal Engineering Division, ASCE, Vol. 102, No. WW2, 1976, pp. 141–164.
5.
Dean, R. G., “Equilibrium Beach Profiles: U.S. Atlantic and Gulf Coasts,” Ocean Engineering Report No. 12, Department of Civil Engineering, University of Delaware, Newark, Del., 1977.
6.
Edge, B. L., et al., Failure of the Breakwater at Port Sines, Portugal, Port Sines Investigating Panel, ASCE, New York, N.Y., 1982.
7.
Gunbak, A. R., and Bruun, P., “Wave Mechanics Principles on the Design of Rubble‐Mound Breakwaters,” Proceedings of Port and Ocean Engineering under Arctic Conditions, POAC 79, Norwegian Institute of Technology, Trondheim, Norway, 1979, pp. 1301–1318.
8.
Herbich, J. B., Sorenson, R. M., and Willenbrock, J. H., “Effect of Berm on Wave Run on Composite Beaches,” Journal of Waterways and Harbors Division, ASCE, Vol. 89, No. WW2, 1963, pp. 55–72.
9.
Hudson, R. Y., “Design of Quarry‐Stone Cover Layers for Rubble‐Mound Breakwaters,” Research Report No. 2‐2, U.S. Army Waterways Experiment Station, Vicksburg, Miss., 1958.
10.
Jacobs, B. K., and Kobayashi, N., “Sandbag Stability and Wave Runup on Bench Slopes,” Report No. CE‐83‐36, Ocean Engineering Program, Department of Civil Engineering, University of Delaware, Newark, Del., 1983.
11.
Jacobs, B. K., “Analysis of Armor Unit Stability under Regular Wave Action,” to be presented to the University of Delaware, at Newark, Delaware, in 1985, in partial fulfillment of the requirements for the degree of Master of Civil Engineering.
12.
Kobayashi, N., and Reece, A., “Irregular Wave Overtopping on Gravel Islands,” Journal of Waterway, Port, Coastal, and Ocean Engineering, ASCE, Vol. 109, No. 4, 1983, pp. 429–444.
13.
Leidersdorf, C. B., Potter, R. E., and Goff, R. D., “Slope Protection for Artificial Exploration Islands off Prudhoe Bay,” 13th Offshore Technology Conference, OTC Paper 4112, 1981, pp. 437–442.
14.
Madsen, O. S., and White, S. M., “Reflection and Transmission Characteristics of Porous Rubble‐Mound Breakwaters,” Report No. 207, Ralph M. Parsons Laboratory for Water Resources and Hydrodynamics, Department of Civil Engineering, Massachusetts Institute of Technology, Cambridge, Mass., 1975.
15.
Ostendorf, D. W., and Madsen, O. S., “An Analysis of Longshore Currents and Associated Sediment Transport in the Surf Zone,” Report No. 241, Ralph M. Parsons. Laboratory for Water Resources and Hydrodynamics, Department of Civil Engineering, Massachusetts Institute of Technology, Cambridge, Mass., 1979.
16.
Saville, T., Jr., “Wave Runup on Composite Slopes,” Proceedings of 6th Coastal Engineering Conference, ASCE, 1958, pp. 691–700.
17.
U.S. Army Coastal Engineering Research Center, Shore Protection Manual, Vols. I and II, U.S. Government Printing Office, Washington, D.C., 1977.
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Copyright © 1985 ASCE.
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Published online: Sep 1, 1985
Published in print: Sep 1985
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