EARTHQUAKE LOADING OF SHEAR SURFACES IN SLOPES. PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON SOIL MECHANICS AND FOUNDATION ENGINEERING, SAN FRANCISCO, 12-16 AUGUST 1985

Slopes of stiff clay and weak mudstone often contain shear surfaces at residual strength. The effect of fast shearing on residual strength thus influences prediction of displacement during earthquake. Tests in the ring shear apparatus which examine this effect are presented here. Generally there is substantial gain in strength during fast shear. Predictions of displacement during earthquake are substantially reduced if this effect is included. In one soil tested, the strength during fast shear dropped to less than the static residual strength. This drop was not due to generation of excess pore pressure. If occurring in the field, this drop in strength could lead to large displacements during an earthquake and to these movements continuing post earthquake at quite high speed. For the covering abstract of the conference see IRRD 287689. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9061915643
• Corporate Authors:

  AA Balkema

  P.O. Box 1675
  Rotterdam,   Netherlands  BR-3000
• Authors:
  • Lemos, L
  • SKEMPTON, A W
  • VAUGHAN, P R
• Publication Date: 1985

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 1955-58
• Serial:
  • Publication of: Balkema (AA)
  • Publisher: AA Balkema

Subject/Index Terms

• TRT Terms: Clay; Conferences; Dislocation (Geology); Earthquakes; Forecasting; Mudstones; Residual strength; Shear stress; Slope stability
• Uncontrolled Terms: Shear displacement; Shearing
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00466472
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 90 6191 564 3
• Files: ITRD, TRIS
• Created Date: Mar 31 1988 12:00AM