SEISMIC RESPONSE OF LIQUEFACTION SITES

The authors of this technical paper focus on the seismic response of liquefaction sites by evaluating the transient shear strains and strong-motion characteristics at Treasure Island during the 1989 Loma Prieta earthquake. The strain levels are used to model soil and buried pipeline deformations observed in the Marina District of San Francisco during the same earthquake. The authors found that transient strains play a critical role in lifeline performance, based on the favorable comparisons of predicted and observed pipeline damage. A simple model for liquefaction sites reveals that shear modulus reduction caused by increased pore pressure can amplify either acceleration or transient displacement, depending on soil properties and deposit thickness. Liquefaction of thick, loose sand deposits can attenuate accelerations while amplifying long-period displacements. The model offers a quantitative means of characterizing the phenomenon of ground oscillation that has been noted at liquefaction sites.

• 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:
  • Pease, J W
  • O'ROURKE, T D
• Publication Date: 1997-1

Language

• English

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 37-45
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 123
  • Issue Number: 1
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Deformation; Dynamics; Liquefaction; Mathematical models; Mechanical strain; Pipelines; Seismicity; Shear strain; Soils
• Uncontrolled Terms: Dynamic characteristics; Models; Seismic response; Site investigation; Strain rate
• Subject Areas: Geotechnology; Highways; Pipelines; Terminals and Facilities; I42: Soil Mechanics;

Filing Info

• Accession Number: 00730869
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 3 1997 12:00AM