Drained residual strength for landslides

Timothy D. Stark, Manzoor Hussain

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Drained residual shear strength is considered applicable for the analysis of slopes with a preexisting shear surface. Torsional ring and direct shear tests were performed to investigate the gain in strength, if any, along a preexisting shear surface with time. This study shows that after establishing the drained residual strength conditions, a measureable strength greater than the drained residual strength is obtained in both torsional ring and direct shear tests at effective normal stresses of 100 kPa or less. However, the recovered strength observed in the laboratory is lost after a small shear displacement which suggests that any strength gain may not be relied upon for stabilization purposes so the drained residual strength as measured using ASTM D6467 is recommended for landslide analysis and design.

Original languageEnglish (US)
Title of host publicationGeoFlorida 2010
Subtitle of host publicationAdvances in Analysis, Modeling and Design - Proceedings of the GeoFlorida 2010 Conference
Pages3217-3226
Number of pages10
Edition199
DOIs
StatePublished - Dec 1 2010
EventGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference - West Palm Beach, FL, United States
Duration: Feb 20 2010Feb 24 2010

Publication series

NameGeotechnical Special Publication
Number199
ISSN (Print)0895-0563

Other

OtherGeoFlorida 2010: Advances in Analysis, Modeling and Design Conference
CountryUnited States
CityWest Palm Beach, FL
Period2/20/102/24/10

Keywords

  • Drainage
  • Landslides
  • Residual strength
  • Slopes

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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