SEISMIC DISPLACEMENT ANALYSIS OF EARTH DAMS

This analysis shows that for rotating along a circular arc, if the shear strength along the slip surface remains constant, there is maximum rotation 2(Km-Kco) which cannot be exceeded. But this value in general is large and therefore is not of practical use. For example, for (KM - Kco) = 0.1, and for a 50 m radius curve, the maximum possible displacement along the arc is xm = 10 m, which is very large. However, this also shows that even when the static factor of safety is equal to one, i.e. Kco = zero, an earthquake acceleration of 0.1 g will give a maximum displacement of 10 m instead of infinity, which will be obtained in the case of plane sliding surfaces or with circular surfaces when the critical acceleration remains constant. A comparison of the displacements obtained in two cases is illustrated. TIE shows that for small angular displacements, the two cases give identical results. The case when the critical acceleration actually deteriorates with displacement is not included in this analysis.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Sarma, S K
• Publication Date: 1981-12

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 1735-39
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 107
  • Issue Number: GT12
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Dislocation (Geology); Earth dams; Earthquakes; Landslides; Rotation; Safety factors; Seismicity; Shear strength; Slip surfaces; Structural analysis
• Uncontrolled Terms: Seismic response
• Old TRIS Terms: Earth slides
• Subject Areas: Geotechnology; Highways; Safety and Human Factors; I42: Soil Mechanics;

Filing Info

• Accession Number: 00348498
• Record Type: Publication
• Report/Paper Numbers: ASCE 16709
• Files: TRIS
• Created Date: Mar 30 1982 12:00AM