On the determination of concrete armour unit stresses including specific results related to Dolosse

Abstract Failures of rubble mound breakwaters armoured with complex types of unreinforced concrete armour units are often due to breakage. This happens when the stresses exceed the material strength. Sufficient parametric studies of the stresses are not yet available to produce design diagrams for structural integrity. The paper presents a general discussion of the problems related to stress determination and describes the results and the analyses of model tests with 200 kg and 200 g load-cell instrumented Dolosse. Static stresses, wave-generated stresses and stresses due to impacts were studied as well as model and scale effects. Moreover, some results from the Crescent City Prototype Dolosse study are presented and related to results from small-scale model tests. A preliminary design diagram for Dolosse is presented as well.

[1]  Steven A Hughes,et al.  The TMA Shallow-Water Spectrum Description and Applications , 1984 .

[2]  K. W. Pilarczyk,et al.  DYNAMIC STABILITY OF ROCK SLOPES AND GRAVEL BEACHES , 1986 .

[3]  Hans F. Burcharth.  FULL SCALE TRAILS OF DOLOSSE TO DESTRUCTION , 1980 .

[4]  Hans F. Burcharth.  Comments on the paper by G.W. Timco titled “On the structural integrity of dolos units under dynamic loading conditions” , 1983 .

[5]  H. Burcharth,et al.  THE INFLUENCE OF WAIST THICKNESS OF DOLOSSE ON THE HYDRAULIC STABILITY OF DOLOSSE ARMOUR by , 2010 .

[6]  James Rosati,et al.  Stresses in Dolos Armor Units Due to Waves , 1990 .

[7]  Hans F. Burcharth.  A Design Method for Impact-Loaded Slender Armour Units , 1981 .

[8]  William G. McDougal,et al.  Wave Forces on Concrete Armor Units , 1987 .

[9]  H. W. Partenscky,et al.  Impact Strain Investigations on Tetrapods: Results of Dry and Hydraulic Tests , 1990 .

[10]  R. D. Scott,et al.  A UNIQUE INSTRUMENTATION SCHEME FOR MEASURING LOADS IN MODEL DOLOS UNITS , 1986 .

[11]  J. V. D. Meer,et al.  Impact Velocities of Rocking Armour Units , 1990 .

[12]  Hans F. Burcharth.  Material, Structural Design of Armour Units , 1983 .

[13]  G. W. Timco.  On the structural integrity of dolos units under dynamic loading conditions , 1983 .

[14]  Dennis G. Markle,et al.  Crescent City Instrumented Model Dolos Study , 1990 .

[15]  Hans F. Burcharth,et al.  Full-scale dynamic testing of Dolosse to destruction , 1980 .

[16]  Hans F. Burcharth,et al.  On Methods of Establishing Design Diagrams for Structural Integrity of Slender Complex Types of Breakwater Armour Units , 1988 .

[17]  Hans F. Burcharth,et al.  A General Discussion of Problems Related to the Determination of Concrete Armour Unit Stresses Including Specific Results related to Static and Dynamic Stresses in Dolosse , 1989 .

[18]  Palle Thoft-Christensen,et al.  Application of Structural Systems Reliability Theory , 1986 .

[19]  Taiji Endo,et al.  ON STRESS IN TETRAPODS UNDER WAVE ACTION , 1986 .

[20]  W. Allsop,et al.  Wave run-up on steep slopes - model tests under random waves , 1985 .