SEISMIC INSTRUMENTATION OF DAMS
The desirability of installing seismic instruments on and near major dams is explained. Two types of instruments are required: (1) Strong-motion acceleragraphs for recording potentially destructive ground shaking and resulting dam vibrations; and (2) sensitive seismographs for determining the local seismicity. A minimum of two strong-motion accelerographs should be installed on the dam and a minimum of two should be installed in the immediate vicinity of the dam. Each accelerograph should record three components of motion, should have a natural frequency of approx. 20 Hz, a recording speed of approx 1 cm/s. The sensitive seismographs are intended to record the local seismicity in the vicinity of the dam site before construction, and to detect any changes in seismicity during reservoir filling. A minimum of three seismographs is recommended for installation in the vicinity of the dam site. A vertical-component seismometer (1 Hz - 5 Hz) with visual recorder and approx 10,000 magnification at 1 Hz is recommended. /ASCE/
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
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Corporate Authors:
American Society of Civil Engineers
345 East 47th Street
New York, NY United States 10017-2398 -
Authors:
- Bolt, B A
- Hudson, D E
- Publication Date: 1975-11
Media Info
- Features: Appendices; Figures; References;
- Pagination: p. 1095-104
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Serial:
- Journal of Geotechnical and Geoenvironmental Engineering
- Volume: 101
- Issue Number: GT11
- Publisher: American Society of Civil Engineers
- ISSN: 1090-0241
- Serial URL: http://ojps.aip.org/gto
Subject/Index Terms
- TRT Terms: Accelerographs; Dams; Electromagnetic frequencies; Instrumentation; Reservoirs; Seismicity; Seismometers; Vibration
- Uncontrolled Terms: Seismic investigations
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00131535
- Record Type: Publication
- Report/Paper Numbers: ASCE #11697 Proceeding
- Files: TRIS
- Created Date: May 14 1976 12:00AM