Residual Shear Strength Measured by Laboratory Tests and Mobilized in Landslides

Download

index.pdf

Date

2012-05-01

Author

Mesri, Gholamreza
Huvaj Sarıhan, Nejan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

65
views

0
downloads

Drained residual shear strength measured by multiple reversal direct shear or ring shear tests has been successfully used for over four decades for stability analyses of reactivated landslides in stiff clays and clay shales; A body of literature has accumulated in recent decades, claiming that "healing" or "strength regain" is realized in time on preexisting slip surfaces already at residual condition. In other words, the shear stress required to reactivate a landslide is claimed to be larger than the drained residual shear strength determined using laboratory tests. This article presents (1) a comparison of secant residual friction angle determined from laboratory tests and secant mobilized friction angle back-calculated for reactivated landslides; (2) explanations that field evidence used to claim "healing" can be attributed to alternative factors, and the laboratory evidence on "strength regain" upon reshearing is the result of either the testing apparatus or testing procedure, or is inapplicable to stiff clays and shales; and (3) laboratory aging test results, which show no "strength regain" on preexisting shear surfaces at residual condition. DOI: 10.1061/(ASCE)GT.1943-5606.0000624. (C) 2012 American Society of Civil Engineers.

Subject Keywords

Geotechnical Engineering and Engineering Geology, General Environmental Science

URI

https://hdl.handle.net/11511/47882

Journal

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING

DOI

https://doi.org/10.1061/(asce)gt.1943-5606.0000624

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

CPT-Based Probabilistic Soil Characterization and Classification Çetin, Kemal Önder (American Society of Civil Engineers (ASCE), 2009-01-01) Due to lack of soil sampling during conventional cone penetration testing, it is necessary to characterize and classify soils based on tip and sleeve friction values as well as pore pressure induced during and after penetration. Currently available semiempirical methods exhibit a significant variability in the estimation of soil type. Within the confines of this paper it is attempted to present a new probabilistic cone penetration test (CPT)-based soil characterization and classification methodology, which ...
Obtaining soil-water characteristic curves by numerical modeling of drainage in particulate media Sattari, A. Shoarian; Toker, Nabi Kartal (Elsevier BV, 2016-04-01) Soil-water characteristic curve (SWCC) is widely used for obtaining mechanical and hydraulic properties of unsaturated soils, such as shear strength, deformation, permeability, and flow. An innovative approach, where a meso-scale medium is generated based on particle size distribution and void ratio of non-plastic soils, for estimating the drying SWCC is developed. With application of the finite difference and Newton-Raphson (Jacobian) approximations, the air-entry pressures of pore bodies in inter-particle...
Stability Charts for the Collapse of Residual Soil in Karst DRUMM, Eric C.; Akturk, Oezguer; Akgün, Haluk; Tutluoğlu, Levend (American Society of Civil Engineers (ASCE), 2009-07-01) Collapse of the residual soil over bedrock cavities often occurs during construction in karst terrain, particularly when the thickness of the residuum is reduced during excavation. Even if an estimate of the strength of the residual soil is known, uncertainty with respect to the size/geometry of the subterranean voids makes a detailed analysis difficult, and straightforward methods to check the stability are needed. In this study, numerical analyses were performed to develop a stability chart expressed in t...
Penetration rate prediction for diamond bit drilling by adaptive neuro-fuzzy inference system and multiple regressions BASARIR, HAKAN; Tutluoğlu, Levend; Karpuz, Celal (Elsevier BV, 2014-05-01) In many mining, civil, and petroleum engineering applications diamond bit drilling is widely used due to high penetration rate, core recovery and its ability to drill with less deviation. Recently, many research have been conducted to estimate the penetration rate of diamond drilling which can be considered as one of the most important parameters in project planning and cost estimation of the operation.
Performance assessment of cement grout borehole plugs in basalt Akgün, Haluk (Elsevier BV, 1994-01-01) Flow tests have been conducted on expansive cement grout plugs with diameters of 160 mm and 200 mm, and length-to-diameter ratios of one, in boreholes in basalt blocks and in steel pipes. Two types of flow tests have been performed: pseudo-constant head tests and transient pulse tests. Hydration temperatures of cement grout plugs have been monitored in steel pipes with inside diameters ranging from 110 mm to 200 mm. During flow tests, basalt blocks have fractured, presumably due to water injection pressure,...

Citation Formats

G. Mesri and N. Huvaj Sarıhan, “Residual Shear Strength Measured by Laboratory Tests and Mobilized in Landslides,” JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, pp. 585–593, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47882.