Operation Hardtack. Project 3. 2. Response of earth-confined flexible-arch structures in high-overpressure regions
The purpose of this project was to determine structural responses and failure criteria of earth-confined corrugated-steel flexible arches subjected to high overpressure blast loading from nuclear detonations. A flexible arch is considered as an arch structure whose ultimate supporting capacity is dependent upon confinement within a surrounding earth configuration. A collateral objective was to determine the radiation-shielding effectiveness of such structures with a minimum cover of five feet of coral sand. Because the soil and ground-water conditions at Eniwetok did not permit the placing of the steel arches below natural-grade level, the structures were confined within massive non-drag sensitive earthwork configurations of coral sand. Empirical determinations were made of the responses of (1) three earth-confined prefabricated corrugated-steel flexible arches when subjected to relatively long-duration blast loadings from a megaton range detonation; and (2) one similar earth-confined flexible-arch when subjected to relatively short-duration blast loadings from a kiloton-range detonation.
- Research Organization:
- Naval Civil Engineering Lab., Port Hueneme, CA (USA)
- OSTI ID:
- 7110389
- Report Number(s):
- AD-A-995386/0/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
EVALUATION OF BURIED CORRUGATED-STEEL ARCH STRUCTURES AND ASSOCIATED COMPONENTS
THE DYNAMIC RESPONSE OF SHALLOW-BURIED ARCHES SUBJECTED TO BLAST LOADING
Related Subjects
FALLOUT SHELTERS
BLAST EFFECTS
SHIELDING
HARDTACK PROJECT
MECHANICAL STRUCTURES
NUCLEAR EXPLOSIONS
DETONATIONS
GROUND WATER
SAND
EXPLOSIONS
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
SHELTERS
WATER
450202* - Explosions & Explosives- Nuclear- Weaponry- (-1989)