Accession Number:

AD0739605

Title:

Behavior of Underground Box Conduits in the San Fernando Earthquake of 9 February 1971.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY ENGINEER DISTRICT LOS ANGELES CALIF

Personal Author(s):

• Hradilek,Peter J.

Report Date:

1972-01-01

Pagination or Media Count:

171.0

Abstract:

A study of the behavior of two flood control channels in the San Fernando earthquake of 9 February 1971 is presented. The report concentrates on the underground conduit reaches of these channels. A detailed account of the heavily damaged areas is presented. Correlations are made between tectonic movements and the behavior of the conduits. One conduit was crossed by a segment of the main fault break. Points on either side of the break experienced vertical, transverse and longitudinal offsets of about 4, 6.5, and 4 feet, respectively. Extensive areas of the conduits suffered failure of the walls due to lateral loads. Evidence of plastic hinge formation was encountered. Author

Descriptors:

• (*UNDERGROUND STRUCTURES
• *EARTHQUAKES)
• DAMAGE
• REINFORCED CONCRETE
• RECTANGULAR BODIES
• FAILURE(MECHANICS)
• STRUCTURAL PROPERTIES
• JOINTS
• CALIFORNIA

Subject Categories:

• Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE