Delwyn G. Fredlund教授的1977年Stress state variables for unsaturated soils
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Delwyn G. Fredlund教授的1977年Stress state variables for unsaturated soils
Journal of Geotechnical Engineering Division, Proceedings, American Society of Civil Engineers, GT5, 103: 447–466, 1977.
Abstract: The stress state variables for an unsaturated soil find their origin in the equilibrium equations for the soil structure and the contractile skin. The contractile skin is the air–water interface which must be considered as a fourth phase n the study of the stress conditions of the unsaturated soil. The equilibrium equations are based on the superposition of coincident equilibrium stress fields for a multiphase system. The desired stress state variables appear as surface tractions in the equilibrium equations. The theoretically derived stress state consists of two stress tensors that may consist of any two of the following three stress variables; namely,(σ − ua), (ua−uw), or(σ − uw).
Null tests were performed in which the individual components of the stress state variables were varied while the stress state variables were maintained constant. The experimental results showed that the theoretically derived stress state variables are acceptable for use in describing the mechanical behavior of an unsaturated soil.
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Journal of Geotechnical Engineering Division, Proceedings, American Society of Civil Engineers, GT5, 103: 447–466, 1977.
Abstract: The stress state variables for an unsaturated soil find their origin in the equilibrium equations for the soil structure and the contractile skin. The contractile skin is the air–water interface which must be considered as a fourth phase n the study of the stress conditions of the unsaturated soil. The equilibrium equations are based on the superposition of coincident equilibrium stress fields for a multiphase system. The desired stress state variables appear as surface tractions in the equilibrium equations. The theoretically derived stress state consists of two stress tensors that may consist of any two of the following three stress variables; namely,(σ − ua), (ua−uw), or(σ − uw).
Null tests were performed in which the individual components of the stress state variables were varied while the stress state variables were maintained constant. The experimental results showed that the theoretically derived stress state variables are acceptable for use in describing the mechanical behavior of an unsaturated soil.
需要的吼一下！
本页显示在:科技爱好与博览 http://www.naf.com.cn转载请保留此行.
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