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Showing 1 to 17 of 17 for “"centrifuge testing"”.
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Development and evaluation of an instrumentation system for high acceleration centrifuge testing of an artificial rock material
… an instrumentation system for high acceleration centrifuge testing of an artificial rock material.</p> <p>A stress analysis of the centrifuge rotor was performed to ensure its safe operation. The centrifuge was found to be safe for operation to a maximum of 1000 rpm for a payload of 15 pounds …
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Inertial measurement unit calibration using Full Information Maximum Likelihood Optimal Filtering
… measurement unit (IMU) calibration in high-g centrifuge environments is considered. FIMLOF uses an approximate Newton's Method to identify Kalman Filter parameters such as process and measurement noise intensities. Normally, IMU process noise intensities and measurement standard deviations are …
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Use of thermo-active piling for slope stabilisation
… purposes - were investigated. An extensive centrifuge testing programme was conducted to quantify the overall performance of unsaturated slopes reinforced by thermo-active piles under different thermal loading conditions. Load transferred to the piles, bending moment distribution along the …
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Numerical and physical modelling of piled rafts on soft clay under combined loading
… under different load combinations using centrifuge modelling. In this case, the main challenge was to model miniature reinforced concrete piles, with sections exhibiting realistic moment-axial load failure loci. Traditionally, reduced-scale model of piles for centrifuge testing are made …
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The influence of structural details, geotechnical factors and environs on the seismic response of framed structures.
… of frame rigidity, geometry and SSI.<br/>Dynamic centrifuge testing is also carried out in order to further validate the improved spectral model for the case of real soil with shear dependant stiffness. The physical model testing is also extended to consider how environs, such as other structures …
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The Seismic Response of Offshore Wind Turbines Supported by Monopiles and Alternative Foundations in Liquefiable Soils
… of monopiles in liquefiable soils using both, centrifuge, and numerical modelling. The experimental setup designed for centrifuge testing aimed to reproduce a monopile supported OWT subjected to the combined action of earthquake induced liquefaction, dynamic loading, and operational loading …
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Performance of Columnar Reinforced Ground during Seismic Excitation
… of columnar reinforced ground during dynamic centrifuge testing. The models were calibrated with results from tests with unreinforced profiles. Thereafter, they were implemented to predict the response of two reinforced profiles during seismic excitations with different intensities and …
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The influence of state on the capacity of driven piles in sands
… funded buy the EPSRC under contract GR/L16590. Centrifuge testing was used to investigate the behaviour of driven piles in sands. A new actuator and strongbox package were designed and constructed taking full advantage of the centrifuge facilities. A fully instrumented model pile was developed, …
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Centrifuge modelling of railway embankments under static and cyclic loading
… is subjected to. Physical modelling in a centrifuge is one of the most effective tools available to a geotechnical engineer. Using the typical designed slopes currently used on the coal export line, the failure of these embankments can be modelled in a centrifuge to better understand the …
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Seismic behaviours of adjacent building structures on liquefied soil
… the influence of soil liquefiability. Dynamic centrifuge testing was used as the primary method of investigation on behaviours of liquefied soil, and finite element modelling was used for comparisons on non-liquefied soil.<br/><br/>For the site response analysis in the free-field, lower …
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Seismic performance of pile-reinforced slopes
… been investigated and an extensive programme of centrifuge testing was conducted to quantify the improvements to seismic slope performance which can be achieved by installing a row of discretely spaced vertical precast concrete piles. This study focussed on permanent movement and dynamic response …
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Dynamic Soil-Structure Interaction In Buildings With Oil Dampers
… mainly from large scale shaking table testing of fixed-base prototype frames. Despite considerable advancements over the years in building complexity and realism into these test structures, little to no experimental effort has been made to investigate dynamic soil-structure interaction …
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Seismic Response of Structures on Shallow Foundations over Soft Clay Reinforced by Soil-Cement Grids
This study uses dynamic centrifuge tests and three-dimensional (3D), nonlinear finite-difference analyses to: (1) evaluate the effect of soil-cement grid reinforcement on the seismic response of a deep soft soil profile, and (2) to examine the dynamic response of structures supported by shallow …
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Evaluating soil pressures on a deep foundation element due to liquefaction-induced lateral spreading
… more rigid, foundation elements. Fourteen centrifuge tests were conducted at the NEES facility at Rensselaer Polytechnic Institute (RPI) to investigate the lateral spreading-induced kinematic pressures on a relatively large deep foundation (caisson) and to observe the related ground …
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MPM Modeling of Internal Collapse Under Levees Caused by Underground Openings
… collapse results are compared with experimental centrifuge test data. The study highlights the challenges of numerically simulating this complex problem using advanced numerical tools and provides insights into the factors influencing internal collapse in levees.
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Soil-Structure Interaction for low damage Seismic Rocking Systems
… respectively, were tested side by side in a centrifuge. The models were placed on a dry sand bed and subjected to a sequence of earthquake motions. Dense and then medium dense (loose) sand were used. The range of rocking amplitude that is required for base isolation was quantified. Overall, …