Accession Number:

AD0607830

Title:

STRUCTURAL RESPONSE AND PERMANENT DISPLACEMENT MEASUREMENTS,

Descriptive Note:

Corporate Author:

ARMY ENGINEER RESEARCH AND DEVELOPMENT LABS FORT BELVOIR VA

Personal Author(s):

• SIEVERS,R. H. ,Jr.
• stacy,A. R.

Report Date:

1960-01-01

Pagination or Media Count:

226.0

Abstract:

Measurements and visual observations made during the Hardtack II series of underground shots provide basis for conclusions regarding shock-resistant design of protection for cavities in rock and qualitative prediction of permanent displacements in rock due to nuclear detonations. Vibration measurements on blast-resistant construction in soil provided non-nuclear test results which apply to shockresistant design. With varying soil cover, the compressive mode predominated in arch structures and a mass of soil apparently acted with the structure that varied in magnitude in inverse fashion with two depths of cover. Underground structural harmonic response theories were in part verified, for some structures, though the absence of an appreciable flexural mode in buried arch structures was significant. Author

Descriptors:

• *SHOCK WAVES
• ROCK
• VIBRATION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE