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Effect of stress rotation on the behavior of clays

Abstract : This thesis deals with the effect of the principal stress rotation on the behavior of natural soils. The importance of this parameter is based on many observations on the state of stress nearby geotechnical constructions such as foundations, tunnels, retaining walls and embankments. The purpose of this report is to investigate the phenomenon by performing sophisticated stress path using the LCPC hollow cylinder apparatus. This behavior is not taken into consideration in numerical modeling. The work consists of validating classical soil constitutive models for several types of stress paths and proposing some modifications. The research includes three main parts: - a bibliographic study of laboratory and in situ research work concerning the rotation of principal stress and its effect on the behavior of constructions - an experimental program using the hollow cylinder apparatus as well as standard triaxial tests; - an analysis of the results and a numerical simulation of the experiments. The final goal is to improve the fine soils behavior law which has been developed in the LCPC since 1983. The application of our conclusions is finally presented for three types of construction.
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Submitted on : Monday, December 20, 2004 - 8:00:00 AM
Last modification on : Monday, October 19, 2020 - 11:11:45 AM
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  • HAL Id : pastel-00000957, version 1



Khaldoun Nasreddine. Effect of stress rotation on the behavior of clays. Engineering Sciences [physics]. Ecole des Ponts ParisTech, 2004. English. ⟨pastel-00000957⟩



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