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 20 of 20 for “"Embedment depth"”.
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Parallel-to-Grain Withdrawal Resistance of Structural Self-Tapping Screws in Canadian Timber
… on screws with a diameter of 10 mm with varying embedment depths, timber density and moisture content. Strains in the screws were monitored to detect if yielding was occurring. The withdrawal resistance increase as the embedment depth increased until the screws began yielding and eventually …
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Basal Stability of Braced Circular Excavations in Isotropic and Anisotropic Clays
… phase investigated the influence of excavation depth-to-width ratio (H/B), wall embedment depth (D), clay thickness (T), and soil-wall interface roughness (Rint) below the excavation. In the next phase of the study, the NGI-ADP anisotropic strength model was utilized. In this set of analyses, …
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Long-term Cyclic Lateral Response and Optimisation of Shallow Foundations
… sand. Additional tests examined the influence of embedment depth and foundation geometry, considering alternative ring foundations at greater burial depths to enhance capacity and performance. The experiments show that permanent cyclic displacement accumulation follows power-law relationships with …
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Investigation of the critical specific gravity for cables and pipelines during various backfilling and installation processes
Embedment of pipeline and cables in the seabed is achieved to protect them from issues such as loading by currents, damage from fishing trawler vessels and to provide thermal insulation. Depending on the type of soil and on financial and operational constraints, the embedment of pipelines/cables …
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NUMERICAL INVESTIGATION OF EXPANSION ANCHORS RESPONSE TO PULL-OUT AND SHEAR LOADS
… was observed for spacing ≥ 1.67 times anchor’s embedment depth. The anchor shear capacity was found to be dominated by the steel failure mode.
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Análise numérica de cravação de estacas torpedo modeladas por integral de pressões
… were evaluated as parameters of influence in the embedment depth of the anchor.
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Scale Model Shake Table Testing of Shallow Embedded Foundations in Soft Clay
… building as the prototype structure. Foundation embedment depth, fundamental mode of the structure, and seismic loading function are varied to generate a large database of SFSI results under controlled conditions. The foundation level response is compared to free-field responses to determine the …
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Seafloor anchoring for platforms in the Messina Strait
… have demonstrated how the uplift capacity of embedment anchors is highly dependent on the soil properties and the anchor geometry. This work focuses in detail on the behavior of vertically loaded circular anchors to keep a floating structure stationary in the offshore environment. The main …
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Standoff screws functioning as mechanical shear connectors in composite joists
… steel deck profile, base angle thickness, screw embedment depth, slab thickness, and slab width. The objectives of the testing were (1) to provide an understanding of the strength of the standoff screw in various test geometries and (2) to provide an understanding of the slip characteristics, or …
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The break-out behaviour of a suction anchor embedded in a granular soil.
… pressures above and below the anchor, and anchor embedment depths were recorded. Suction anchors develop high pull-out loads primarily due to the applied suction pressure with embedment depth. The behaviour of an embedded-type suction anchor in saturated sand is governed by a large number of …
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Modeling the Behavior of Smart Oil Well Cements and Offshore Pipe-Soil Interaction in Very Soft Soil
… the soft soil strength from 0.3 kPa to 1 kPa and embedment depth. Also, this study investigated on using current modified oil well cement for health monitoring of offshore pipeline. Two new models have been developed to predict the vertical soil resistance on plastic pipe. Also by adding 0.5% …
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Application of P-wave Reflection Imaging to Unknown Bridge Foundations and Comparison with Other Non-Destructive Test Methods
… or as-built plans available to show the type, depth, geometry, or materials incorporated into the foundations. Several non-destructive testing (NDT) methods have been developed to evaluate these unknown foundations. The primary objective of this research is to identify the most current and …
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Nondestructive detection of foundation pile embedment depths for high mast light towers
… algorithms, for determining in situ pile embedment depths by way of seismic waves. The embedment depth of each pile supporting an HMLT is identified through a systematic sensing approach that includes: (i) collection and classification of the pertinent foundation designs and soil …
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FSI Methodology for Analyzing VIV on Subsea Pipeline Free Spans with Practical Boundary Conditions
… with the soil (20-200 inches), and the pipe embedment depth within the soil (0-10 inches). A Box-Behnken surface response design was used to capture the non-linear responses throughout the design space. These simulations show a mitigation of overall stresses to the free spans; as a result, …
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Experimental and Numerical Investigation of Droplet Formation and Material Interactions Under Different Conditions
… properties (Negative Possion’s ratio and layer depth) on the enhancement of the indentation resistance and material deformation. The FE results are correlated with an analytical solution for homogenous materials and results from a mathematical approach for embedded systems in an elastic …
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Seismic Performance of Prestressed Pile-To-Bent Cap Connections
… prestressed concrete piles to a specified depth and leaving a portion of the pile above ground to be used for an intermediate superstructure support. The portions of the piles above ground are leveled within tolerance, and a bent cap cage is constructed around them with a specified pile …
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Influence of heave reducing piles on ground movements around excavations
… of additional tests in which the retaining wall embedment depth was reduced. The use of piles was found to reduce both horizontal movements and settlement behind the retaining wall. Maximum reductions in settlement behind the retaining wall were found to be about 55%. The influence of piles on …
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Experimental Testing and Numerical Investigation of Materials with Embedded Systems during Indentation and Complex Loading Conditions
… conditions (indenter size, thickness and embedment depth of the embedded layer) was established and key mechanisms of the Poisson’s ratio effect are highlighted. The results show that the auxeticity of the matrix has a direct influence on the indentation stiffness of the system with an …
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Surface Wave Analysis in Laterally Varying Media
… in the first tens up to hundreds meters of depth of the subsoil. The surface wave method exploits the geometric dispersion proper of surface waves: in a non-homogeneous medium every frequency is characterized by a different phase velocity, as every frequency component travels through a …
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A study on the behaviour of guided wave propagation in utility timber poles
… 104,000 of these bridges had unknown foundations depth. Therefore, a reliable non-destructive evaluation technique is essential for the condition assessment of timber poles/piles to ensure public safety, operational efficiency and to reduce the maintenance cost. Different types of non-destructive …