Dynamic Tests of a Model Flexible-Arch-Type Protective Shelter
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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The general objective of this study was to determine the dynamic response of a buried model flexible-arch troop shelter to simulated nuclear blast overpressures. To accomplish this, a model structure was constructed using a geometric scaling ratio of 1 to 4.5. The structure was buried in dense, dry sand with the depth of cover over the crown equal to one-fourth of the arch diameter and tested in the Waterways Experiment Station Large Blast Load Generator. A series of five tests was conducted at overpressures ranging from 37 to 177 psi with the model being excavated and rebuilt after each test. Strain, acceleration, and deflection were measured at various points on the structure measurements were also made of the pressure inside the structure, stress and acceleration in the free field, and overpressure at the soil surface.
- Structural Engineering and Building Technology