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 “"Cyclic behaviour"”.
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Cyclic behaviour of monopile foundations for offshore wind turbines in clay
… curves may be unsuitable to model the monopile’s behaviour as it is expected to behave similarly to a rigid pile rather than flexibly. Secondly, the curves may not accurately estimate the initial pile-soil stiffness. Thirdly, the curves are not comprehensive enough to account for the accumulated …
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The cyclic behaviour of sand, from the Prevost model to offshore geotechnics
… 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 observed in …
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An experimental study on the cyclic behaviour of riveted stiffened seat angle connection with concrete encasement.
… for the sole purpose of fire protection. The behaviour of semi-rigid connections under cyclic loading and the contribution to seismic resistance of the concrete encasement is a concern. An experimental investigation was undertaken to determine the effect of concrete encasement on cyclic …
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Cyclic behaviour and numerical modelling of cold-formed hollow structural sections [Comportamento ciclico e modellazione numerica di sezioni cave strutturali formate a freddo]
I profili cavi strutturali formati a freddo (cold-formed Hollow Structural Sections, HSS) sono ampiamente utilizzati come colonne nei telai in acciaio resistenti a momento grazie all’elevato rapporto resistenza/peso, alla rigidezza laterale simile lungo direzioni ortogonali e all’elevata rigidezza …
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Cyclic Properties of Natural Soil Containing Pumice Particles
… particle shape and crushing on the undrained cyclic behaviour of NP sands, a comprehensive set of undrained cyclic triaxial tests were performed on undisturbed and reconstituted NP sands and reconstituted Toyoura sand with different relative densities. It was found that the reconstituted NP …
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Influence of post-cyclic loading on hemic peat
… aim of this research is to establish the post-cyclic behaviour of peat soil after cyclically loaded and to assess the effect of parameters changes on static and post-cyclic behaviour of peat soil. 200 specimens are tested, and prepared under consolidated undrained triaxial with effective …
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An experimental investigation of cyclically, axially loaded piles in sand
The research work involved the installation and cyclic load testing of large-scale pressure-grouted, instrumented piles in sand in the laboratory. The major objective of this experimental investigation was to establish the effects of the mean cyclic load level and amplitude on the pile behaviour …
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An analytical model for the seismic analysis of reinforced concrete frame structures
… developing an analytical model to describe the cyclic behaviour of reinforced concrete members. The mechanisms which are important in the behaviour of members dominated by flexural deformations are identified. They include bar-slippage due to deterioration of the bond between the steel and …
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Monitoring Erebus volcano's active lava lake; tools, techniques and observations
… gas composition, exhibit a pronounced pulsatory behaviour on a time-scale of ∼10 min. Focusing primarily on the analysis of infra-red (IR) imagery acquired from the crater rim, this dissertation considers how the periodic behaviour of the Erebus lava lake evolves over decadal time periods, how …
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Determination of the main parameters affecting the performance of bridge falsework systems
… the available knowledge about the structural behaviour, reliability, robustness and risk of these structures. The main, internal and external, hazards are identified and detailed, including the procedural, enabling and triggering hazards. The use of reduction factors to determine the values of …
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Sediment Transport and Morphodynamics at an Estuary Mouth: a Study using Coupled Remote Sensing and Numerical Modelling
… ebb tidal delta are highly dynamic, leading to a cyclic morphological behaviour. Application of the numerical model (MIKE21 HD, NSW, ST) served two separate functions. The hydrodynamic model has been used for the image processing and, combined with the sediment transport module, the full model has …