Accession Number:

AD0848917

Title:

Dynamically Loaded Circular Composite Slabs Phase II: Project Hercules.

Descriptive Note:

Technical rept. Jan-Apr 68,

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE ERIC H WANG CIVIL ENGINEERING RESEARCH FACILITY

Personal Author(s):

Report Date:

1969-02-01

Pagination or Media Count:

128.0

Abstract:

Seven circular composite slabs were tested simultaneously in a test facility designed to simulate the air pressure and airblast-induced ground motions of a nuclear blast. The slabs were designed to give information about the load-carrying capacity of a possible missile launch facility closure concept based on a thick concrete slab confined by a steel ring at the periphery and a steel plate on the bottom. Five of the slabs had a clear-span diameter of 36 inches and two had a clear-span diameter of 18 inches. The thickness-to-clear-span ratios varied from 3.6 to 1.8. Instrumentation was provided to measure 1 strains in the concrete, the bottom plates, and the confining rings 2 accelerations and displacements at the centerlines of the slabs and 3 velocities of the foundations of the slabs. Only one slab showed signs of impending failure with crack patterns indicating the development of a punching shear failure. Although some instrumentation records yield reasonable data, most of the records were inconsistent and difficult to interpret. Author

Subject Categories:

  • Guided Missile Launching and Basing Support

Distribution Statement:

APPROVED FOR PUBLIC RELEASE