Chapter
Jun 6, 2018
Steady-State Residual Strength of Partly Saturated Soils to Evaluate Runout Distance of Landslides during Earthquakes
Publication: Innovations in Geotechnical Engineering
Abstract
In an effort to determine the residual strength from the laboratory tests, a new type of tests termed “constant-volume triaxial test” was performed on non-saturated specimens of silty sand prepared at varying water contents. The results of the tests disclosed that the water content or saturation ratio is a key parameter governing the residual strength of the non-saturated soil tested in the above manner. Back-analysis was also made to determine the residual strength that might have been mobilized in the landslide triggered at Tsukidate at the time of the May 26, 2003 earthquake. The comparison of these two data showed a reasonable degree of coincidence, indicating that the proposed method of the laboratory triaxial tests would be a promising means for estimating the residual strength of given soils.
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Published In
Innovations in Geotechnical Engineering
Pages: 277 - 298
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Jun 6, 2018
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ASCE Technical Topics:
- Earthquakes
- Engineering fundamentals
- Geohazards
- Geomechanics
- Geotechnical engineering
- Laboratory tests
- Landslides
- Material mechanics
- Material properties
- Materials engineering
- Residual soils
- Residual strength
- Saturated soils
- Soft soils
- Soil mechanics
- Soil properties
- Soil strength
- Soil water
- Soils (by type)
- Strength of materials
- Tests (by type)
- Triaxial tests
Authors
Affiliations
Kenji Ishihara
Research and Development Initiative, Chuo Univ., 1-13-27 Kasuga, Bunkyou, Tokyo, Japan.
Storm, Flood, and Landslide Research Division, National Research Institute for Earth Science and Disaster Resilience, 3-1 Tennodai, Tsukuba, Ibaraki, Japan. E-mail: [email protected]
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