. Design for implosion of concrete cylinder structures under hydrostatic loading. Underwater concrete construction; Hydraulic structures. material was not a good substitu- tion. Figure B-16 shows that specimen 5-2 had a very local failure at the top edge which was a bearing-type failure. Boundary behavior is quanti- fied in Table B-4. For conveni- ence, a nondimensional value, 4), was selected to express boundary behavior as the ratio of radial displacement at the end supports to the radial displacement at midlength of the specimen. A rigid support would be identified by (}) = 0 and a free sup
. Design for implosion of concrete cylinder structures under hydrostatic loading. Underwater concrete construction; Hydraulic structures. material was not a good substitu- tion. Figure B-16 shows that specimen 5-2 had a very local failure at the top edge which was a bearing-type failure. Boundary behavior is quanti- fied in Table B-4. For conveni- ence, a nondimensional value, 4), was selected to express boundary behavior as the ratio of radial displacement at the end supports to the radial displacement at midlength of the specimen. A rigid support would be identified by (}) = 0 and a free support by (]) = 1. Observed boundary perfor- mances showed a small difference between actual and theoretical behavior. For free-support speci- mens the ideal 4) of was closely approximated. Two specimens with t/D = showed free-support behavior where (^ was and Specimen 2-3 showed unusual behavior where the bottom of the cylinder moved radially inward the least, ^ = , but the top moved inward the most, (|) = (, the top of the cylinder at the flat spot location moved inward more than the middle).. Figure B-12. Fragments of failure hole from specimen Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Haynes, H. H; Naval Construction Battalion Center (Port Hueneme, Calif. ). Civil Engineering Laboratory. Port Hueneme, Calif. : Naval Construction Battalion Center
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