Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"soil stress"”.
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Data-Driven Risk Assessment of Bridges Subject to Corrosion and Scour
… after scour events, including the impacts of soil stress history, scour hole dimensions, and layered soils effects 4. Investigation of the influence of measured non-uniform scour on bridge responses 5. Fragility assessment of bridges utilizing both scour and corrosion inspection data 6. …
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Small non-coding RNA-mediated epigenetic regulation of gene expression and its implications for wheat adaptation to continuous cultivation
… to the interaction of abiotic and biotic soil stress factors as well as plant adaptation to long-term monoculture systems. However, the underlying molecular mechanisms have not yet been adequately explained. Against this background, this dissertation presents, in addition to a general …
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Performance of Silty Sands and their Use in Flexible Airfield Pavement Design
… actual practice where a wide range of fines and soil gradations could be present in a real-world project. This research investigates the characteristics of natural sands and examines the influence of these marginal materials in pavement design using element testing and controlled modelling of an …
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Elastic analysis of soil media.
Elastic Solutions can be used to predict stresses and displacements in loaded soil media provided the non-linear stress-strain behaviour of the soil is recognised and allowance made for it in calculating displacements. This thesis examines the methods of elastic analysis suitable for examining …
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Experimental and numerical investigations to assess the behaviour of a buried pipeline in areas with high geological instability
… such as landslides, fault movements, soil liquefaction which may be caused by seismic activity are one of the most dangerous phenomena that can involve buried pipelines, e.g. for oil and gas transportation, or water and sewage. This aspect is currently an important part of research and …
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New methods for <i>in situ </i>measurement of mechanical root-reinforcement on slopes
… of roots to the shear strength of the soil is however difficult to measure in situ. Existing methodologies are time-consuming and therefore not suitable to quantify spatial variability on the slope. Furthermore, some existing methods, for example large in situ shear box testing, can be …
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Development and validation of a stress-based procedure for the design of military flexible pavements
… validation and implementation of a new stress-based design procedure for military flexible airfield pavements. This proposed new procedure is based on the U.S. Army Corps of Engineers California Bearing Ratio (CBR) design methodology. The CBR design methodology has its roots on a very …
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Numerical study of solute transport in deformable soil liners
… Conventional methods of analysis assume that the soil is fully saturated. However, throughout much of the world unsaturation exists in landfill basal liner. Although a few investigations have treated the migration of VOCs in unsaturated soil liner, no deformation <br/>of liner due to mechanical …
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Controlling role of suction stress in the Atterberg limits
Soil plasticity and consistency are indicators of a soil’s strength and deformation as a function of water content. They are often treated as secondary concepts in geotechnical analysis, likely due to the arbitrary and empirical nature of their definitions—such as those associated with plastic and …
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Finite element study of geosynthetic encased stone columns in sensitive soft clay
Some normally consolidated soft soils manifest strength sensitivity, ie these soil manifest strain softening when shear in an undrained mode. These soils, referred to as sensitive soft soils, have the typical features of strain hardening in drained shearing and strain softening in undrained …