Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analyzing Liquefaction Induced Instability and Deformation of Slopes using Static Shear Stress and Residual Strength
The current state of practice regarding liquefaction-induced instability and deformation of sandy slopes is to use the correlation between the penetration resistance and back-calculated residual strength along the critical failure surface. However, according to a recent study (Malvick et al. 2008; Kulasingam et al. 2004), the residual shear strength should not be closely related to pre-failure penetration resistance alone, as it is a function of many other factors together. In this paper, the role of static shear stress in the residual shear strength is examined based on well-published case histories. Shear strength after liquefaction failure is directly correlated to an existing pre-failure static driving shear stress and preliminary results are presented with consideration of the void redistribution effect. From the proposed chart, the potential mode of failure among flow and lateral spreading can be predicted. Also, the possible range of slope deformation induced by liquefaction can be estimated. From the preliminary research, static shear stress in conjunction with the void redistribution effect may be useful to understand the mechanism of in-situ flow and lateral spreading issues.
Analyzing Liquefaction Induced Instability and Deformation of Slopes using Static Shear Stress and Residual Strength
The current state of practice regarding liquefaction-induced instability and deformation of sandy slopes is to use the correlation between the penetration resistance and back-calculated residual strength along the critical failure surface. However, according to a recent study (Malvick et al. 2008; Kulasingam et al. 2004), the residual shear strength should not be closely related to pre-failure penetration resistance alone, as it is a function of many other factors together. In this paper, the role of static shear stress in the residual shear strength is examined based on well-published case histories. Shear strength after liquefaction failure is directly correlated to an existing pre-failure static driving shear stress and preliminary results are presented with consideration of the void redistribution effect. From the proposed chart, the potential mode of failure among flow and lateral spreading can be predicted. Also, the possible range of slope deformation induced by liquefaction can be estimated. From the preliminary research, static shear stress in conjunction with the void redistribution effect may be useful to understand the mechanism of in-situ flow and lateral spreading issues.
Analyzing Liquefaction Induced Instability and Deformation of Slopes using Static Shear Stress and Residual Strength
Park, D. S. (Autor:in)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 854-863
25.02.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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