A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of Stiff Equatorial Rings on Concrete Spherical Hulls Subjected to Hydrostatic Loading
Thirteen hollow concrete spheres of 16-inch outside diameter x 14-inch inside diameter and one sphere of 66-inch outside diameter x 57.75-inch inside diameter were assembled from hemispheres fastened together with equatorial joint rings of different stiffnesses. The joint rings were made from polycarbonate plastic, glass reinforced plastic laminate, aluminum, titanium, low carbon steel, and alloy steel. After instrumentation with electrical resistance strain gages, the spheres were tested to destruction under external hydrostatic loading. Equatorial joints that are either considerably stiffer or more compliant than concrete lower the short-term implosion pressure of the concrete spheres by as much as 27%; the glass reinforced plastic joint ring did not significantly reduce the implosion pressure. It is recommended that equatorial joint rings be designed to have a stiffness approximately equal to that of the concrete shell and be made of glass reinforced plastic. If stiffer joint rings are used, the operational pressure should be 30% lower than that of a sphere without a mechanical lock joint mechanism. (Author)
Influence of Stiff Equatorial Rings on Concrete Spherical Hulls Subjected to Hydrostatic Loading
Thirteen hollow concrete spheres of 16-inch outside diameter x 14-inch inside diameter and one sphere of 66-inch outside diameter x 57.75-inch inside diameter were assembled from hemispheres fastened together with equatorial joint rings of different stiffnesses. The joint rings were made from polycarbonate plastic, glass reinforced plastic laminate, aluminum, titanium, low carbon steel, and alloy steel. After instrumentation with electrical resistance strain gages, the spheres were tested to destruction under external hydrostatic loading. Equatorial joints that are either considerably stiffer or more compliant than concrete lower the short-term implosion pressure of the concrete spheres by as much as 27%; the glass reinforced plastic joint ring did not significantly reduce the implosion pressure. It is recommended that equatorial joint rings be designed to have a stiffness approximately equal to that of the concrete shell and be made of glass reinforced plastic. If stiffer joint rings are used, the operational pressure should be 30% lower than that of a sphere without a mechanical lock joint mechanism. (Author)
Influence of Stiff Equatorial Rings on Concrete Spherical Hulls Subjected to Hydrostatic Loading
L. F. Kahn (author) / J. D. Stachiw (author)
1971
69 pages
Report
No indication
English
Structural Mechanics , Marine Engineering , Structural shells , Hulls(Marine) , Underwater objects , Hydrostatic tests , Hemispherical shells , Rings , Concrete , Loading(Mechanics) , Hydrostatic pressure , Strain(Mechanics) , Manufacturing methods , Test methods , Modulus of elasticity , Yield point , Failure(Mechanics) , Spherical shells , Implosions
Behavior of spherical concrete hulls under hydrostatic loading -- 2
| Engineering Index Backfile | 1967
Behavior of spherical concrete hulls under hydrostatic loading -- 1
| Engineering Index Backfile | 1967