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Simple Approaches for the Application of the Mechanics of Unsaturated Soils into Conventional Geotechnical Engineering Practice
Comprehensive understanding of the mechanical behavior of unsaturated soils is required for the rational analysis and design of geotechnical infrastructure placed in or constructed with unsaturated soils. The mechanical properties of unsaturated soils are sensitive to changes in soil suction and water content. These properties have to be determined from cumbersome experimental studies that require highly trained personnel and are also time-consuming to perform. This paper summarizes a series of experimental studies related to the mechanical properties of a compacted glacial till and their influence on the load-settlement behavior and bearing capacity of a footing and a single friction pile installed in compacted glacial till. A simple unified model was used to predict the mechanical properties of compacted glacial till taking account of the influence of water content and suction. The predictions were further used to model the measured behavior of the model footing and model friction pile from numerical analysis using the conventional Mohr-Coulomb constitutive model. The simple approaches used in this study require only limited experimental data and soil properties information for interpreting the complex behavior of a compacted unsaturated soil. The study presented in this paper is of interest to the geotechnical engineers for extending the mechanics of unsaturated soils into conventional practice.
Simple Approaches for the Application of the Mechanics of Unsaturated Soils into Conventional Geotechnical Engineering Practice
Comprehensive understanding of the mechanical behavior of unsaturated soils is required for the rational analysis and design of geotechnical infrastructure placed in or constructed with unsaturated soils. The mechanical properties of unsaturated soils are sensitive to changes in soil suction and water content. These properties have to be determined from cumbersome experimental studies that require highly trained personnel and are also time-consuming to perform. This paper summarizes a series of experimental studies related to the mechanical properties of a compacted glacial till and their influence on the load-settlement behavior and bearing capacity of a footing and a single friction pile installed in compacted glacial till. A simple unified model was used to predict the mechanical properties of compacted glacial till taking account of the influence of water content and suction. The predictions were further used to model the measured behavior of the model footing and model friction pile from numerical analysis using the conventional Mohr-Coulomb constitutive model. The simple approaches used in this study require only limited experimental data and soil properties information for interpreting the complex behavior of a compacted unsaturated soil. The study presented in this paper is of interest to the geotechnical engineers for extending the mechanics of unsaturated soils into conventional practice.
Simple Approaches for the Application of the Mechanics of Unsaturated Soils into Conventional Geotechnical Engineering Practice
Vanapalli, Sai K. (author) / Han, Zhong (author)
Second Pan-American Conference on Unsaturated Soils ; 2017 ; Dallas, Texas
PanAm Unsaturated Soils 2017 ; 223-243
2018-06-20
Conference paper
Electronic Resource
English
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