THE DYNAMIC RESPONSE OF SHALLOW-BURIED ARCHES SUBJECTED TO BLAST LOADING. (thesis)
A study was made of the effectiveness of the surrounding soil in restrainlng the lateral movement of shallow-buried arches subjected to blast overpressures from nuclear explosions. The theory is developed for parabolic arches with circular or barrel arches included as a special case. It can be applied equally well to arches oriented with their longitudinal axes perpendicular to or parallel to the direction of travel of the blast wave. The arch is considered to be buried near the surface of a semi-infinite soil mass. The depth of cover over the crown is limited to one-half of the arch span. The two-hinged rather than the fixed arch is selected as representing more closely the shallowburied arch structures used in full-scale nuclear tests to date. While these structures were not actually pinned at the arch abutments, their behavior under blast loading appears to resemble more closely the pinned than the fixed case. The principal variables studied in the numerical examples include depth of cover, over-pressure loading, arch material, and arch span. (auth)
- Research Organization:
- Illinois. Univ., Urbana
- NSA Number:
- NSA-17-012388
- OSTI ID:
- 4761764
- Report Number(s):
- AD-278285
- Country of Publication:
- United States
- Language:
- English
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