AN EFFECTIVE STRESS MODEL FOR LIQUEFACTION

The important factors affecting the dynamic response of saturated sand layers to earthquake motions are: (1) The initial shear modulus in situ; (2) the variation of shear modulus with shear strain; (3) contemporaneous generation and dissipation of pore-water pressures; (4) changes in effective mean normal stress; (5) damping; and (6) hardening. Constitutive ralations are formulated that take all these factors into account and these are incorporated into a nonlinear method for the dynamic effective stress analysis of saturated sands. The method predicts the phenomenological features of the dynamic response of saturated sand layers that commonly occur as the pore-water pressure rises in the sand during earthquake shaking. It allows the distribution of pore-water pressure and the effects that drainage and internal flow have on the location and time of liquefaction to be determined quantitatively. /Author/

• Supplemental Notes:
  • Presented at ASCE Annual Convention and Exposition, Philadelphia, Pa., September 27-October 1, 1976.
• Corporate Authors:

  Institution of Electrical Engineers

  Savoy Place
  London WC2R 0BL, NY  England  10016-5997
• Authors:
  • Liam Finn, W D
  • LEE, K W
  • Martin, G R
• Publication Date: 1977-6

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 517-533
• Serial:
  • Electronics Letter
  • Volume: 103
  • Issue Number: GT-6
  • Publisher: Institution of Electrical Engineers

Subject/Index Terms

• TRT Terms: Damping (Physics); Drainage; Dynamic loads; Earthquakes; Hydraulics; Liquefaction; Pore water pressures; Sand; Shear modulus; Strain (Mechanics); Stresses
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Strains
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00165363
• Record Type: Publication
• Report/Paper Numbers: ASCE 13008 Proceeding
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM