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 17 of 17 for “"Geotechnics"”.
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The cyclic behaviour of sand, from the Prevost model to offshore geotechnics
The main objective of this thesis is the studying of the cyclic behaviour of dense sand. Its centre of gravity is the implementation of a convenient constitutive law in the finite element code LAGAMINE. The first step consists in summarising the salient features of the cyclic behaviour of sand …
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Shear strength behaviour of sugarcane bagasse reinforced soils
… footprints and contributing to sustainable geotechnics. Although bagasse morphological composition contains structural elements ideal for reinforcement and composite materials, it has received little research as a standalone reinforcement material. Because of this, a direct shear test was …
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Application of a discrete element model to the analysis of granular soil recovery in an offshore tubular vibrocore
… need for ocean resources accelerates, offshore geotechnics continues to grow and become ever more relevant. Seabed soil sampling is crucial in deep-water engineering projects or geological studies where a detailed knowledge of the seabed geology is required. Deep-sea vibrocoring is a relatively …
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Behaviour of buried pipelines subjected to external loading.
… to express his gratitude to all members of the geotechnics group at the University of Sheffield for the useful discussions and comments. Special thanks and appreciation are extended to the staff at the ERS, particularly Mr E. Middleton for providing the data of the field tests and constructive …
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Centrifuge modelling of high shear capacity ribbed piles in stiff clay
… and carried out in collaboration with Arup Geotechnics.
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The effects of multi-directional loading on soil liquefaction
… remains one of the least understood areas in geotechnics. This study developed a new test database on Hostun sand with the modified multi-directional simple shear testing apparatus. The results of uni-directional tests were examined under available analysis frameworks to validate the …
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The dynamics of reactivated landslides: Utiku and Taihape, North Island, New Zealand
… approaches including geology, geomorphology, geotechnics and geomatics. Without such an approach the mechanisms governing their motion could not have been adequately resolved. The deformation behaviour at the two slides during the period of observation would best be described as episodic …
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Image-Based Geotechnical Constitutive Model Parameter Calibration
In geotechnics, physical tests are often used to calibrate material parameters that are required to simulate soil behaviour through appropriately simplified mathematical models, commonly known as constitutive models. Conventional "element" tests (e.g. triaxial, simple shear) typically assume a …
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Computer program development for the analysis of inelastic beam and soil behaviour in geotechnical design
… support systems, an area of structural design in geotechnics chosen to demonstrate realistic design potential for the computer program. The two-layered principle is based on the derivation of a control parameter to differentiate between response from just the upper soil layer, and a combined …
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Multi-Scale Thermo-Hydro-Mechanical Behavior of Saturated Earth Materials
Various geotechnical-related energy applications, such as geothermal piles, subject soils to temperature changes. Recorded temperature variations around thermo-active infrastructure and within the active layer of the permafrost reveal the cyclic and transient nature of these temperature changes. …
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Contribution to kinematic and inertial analysis of piles by analytical and experimental methods
… ranges of interest in earthquake engineering and geotechnics. In addition, they are advantageous over existing simplified analytical approaches of the Winkler type, as they are more accurate, self - standing, free of empirical constants and provide more realistic simulation of the problem. The …
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Quaternary geology of the German North Sea and Western Irish Sea Mud Belt: revised stratigraphies, geotechnical properties, sedimentology and anthropogenic impacts
The climatic development of the Mid to Late Quaternary (last 400,000 years) is characterised by fluctuation between glacial and interglacial periods leading to the present interglacial, the Holocene. In comparison to preceding periods it was believed the Holocene represented a time of relative …
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Análisis de la filtración en presas con cimientos yesíferos
… out in the constant head permeameter (in the Geotechnics laboratories of Madrid: ETSICCP and Cedex), where we verified the validity of the calculations realized by DISOLUCIÓN2D, after verification of the numerical models results with experimental dates. The material used for the tests was …
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Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials
Quarry By-products (QB), usually less than 0.25 in. (6 mm) in size, are the residual deposits from the production of required grades of aggregates and are often stockpiled in excess quantities at the quarries. More than 175 million US tons of QB are produced every year from the 3,000 operating …
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Soft computing based parameter identification in pavements and geomechanical systems
Accurate estimation of road pavement geometry and layer material properties through the use of proper nondestructive testing and sensor technologies is essential for evaluating pavement’s structural condition and determining options for maintenance and rehabilitation. For these purposes, pavement …