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Showing 1 to 20 of 74 for “"Pore Pressures"”.
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Pore Pressures in Partially Saturated Soils
Made available in DSpace on 2014-12-10T22:21:28Z (GMT). No. of bitstreams: 1 7114755.pdf: 4144484 bytes, checksum: 8c428c8b9808536d048776d1c080ae0b (MD5) Previous issue date: 1970
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Pore pressures in clays due to cone penetration
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1980.
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Measured and predicted pore pressures in earth dams
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1980.
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Residual pore pressures and shear strength of compacted clay
Thesis: B.S., Massachusetts Institute of Technology, Department of Civil and Sanitary Engineering, 1961
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The influence of loading rate on excess pore pressures in triaxial tests
… errors due to incomplete drainage or non-uniform pore pressures in fine grained soils. The work consisted of a combination of laboratory tests in which pore pressures were measured within triaxial samples, numerical analysis using the CRISP geotechnical finite element program and theoretical …
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Investigation of Pore Pressures During High-Velocity Impact by a Free Fall Penetrometer
… capabilities, modern FFPs can be equipped with pore pressure sensors. Pore pressure measurements are extensively used in traditional cone penetration testing, but their usage and interpretation is still limited for FFP testing. This thesis represents an effort to advance the interpretation of …
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Monitoring microseismic activity in core samples encased in core flooding apparatus subjected to confining and pore pressures
… to loading/unloading patterns of confining and pore pressures, so as to simulate the environment of underground sandstone formations for carbon storage. The detected AE events were synchronized with the applied pressure profiles to show the temporal clustering of events. A simple one-dimensional …
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Análise numérica de aterro sobre solo compressível utilizando as teorias de estados críticos e de adensamento de Biot
… and numerical values of displacements and excess pore-pressures are compared with both measured values and results of other analysis. Good agreement for displacements, and fairly good agreement for pore-pressures are obtained. To evaluate the long term behaviour of the embankment, a drained and a …
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Numerical simulation and field verification of inclined piezocone penetration test in cohesive soils
… resistance, sleeve friction and generated excess pore pressures. Coefficient of lateral earth pressure K indicates the degree of initial stress anisotropy. If K=1, no difference is expected between inclined and vertical penetrations. However, for K‚1, the tip resistance, sleeve friction and …
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Analyses and interpretation of tapered piezoprobe and application to offshore pile design
… site investigation. The new device measures pore pressures at the tip of a 1/4" diameter extension piece that connects through a tapered section to conventional drill rods. By accelerating the dissipation of penetration-induced excess pore pressures, the design aims to provide reliable …
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Interpretation of cone penetration test data for underconsolidated clay
… cone penetration test data not corrected for pore pressures underestimates undrained shear strength. Additionally, small increases in the degree of consolidation of the underconsolidated clay increases the undrained shear strengths.
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Development and testing of experimental equipment to measure pore pressure and dynamic pressure at points outside a pipe leak
… Pitot tubes. When using the experimental setup, pore pressures and dynamic pressures around the leak and therefore within the ballotini bed were measured using two Pitot tubes. The accuracy and repeatability of these measurements were also of importance and were investigated. The accuracy of the …
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Finite element analysis of embankment dam due to rapid drawdown events
… to estimate due to the time-dependence of pore pressures within the dam and uncertainties in the shear strength properties of compacted fills. Computational analysis tools such as non-linear finite element methods allow for more comprehensive analyses than can be accomplished by …
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Seismic response of wharf structures supported in liquefiable soil
… of free field displacements and of excess pore pressures predicted by Vytiniotis (PhD, 2011) at specific locations along the embedded length of piles (for a suite of 56 ground motions). The results show that the primary cause of the structural damage is indeed the lateral spreading of the …
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A laboratory investigation of the effect of flow rate and bedding characteristics on the interaction of a vertical water jet with an idealised soil medium
… shallow leaks under relatively high pipe pressures from growing and reaching the bed surface. As a result, leaks are able to remain bound beneath the ground surface with reduced chances of being detected and repaired. The goal of this study was to conduct experiments aimed of performing a …
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Three-dimensional finite element analysis of a complex excavation on the MIT campus
… Plaxis 3D 2011 to simulate ground deformations, pore pressures, and diaphragm wall deflections for the very well instrumented excavation for the basement of the Stata Center on the MIT campus. The model predictions are compared with the field measurements that include vertical inclinometers, …
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Two-Dimensional Analysis of Water-Filled Geomembrane Tubes Used as Temporary Flood-Fighting Devices
… sliding, and piping, are studied. The effect of pore pressure on these failure modes is examined. The influence of a filter placed under part of the tube and block is also investigated. The tube's tensile forces, shear forces, moments, and settlements are included. Soil stresses and pore …
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Air Injection Technique to Mitigate Liquefaction beneath Shallow Foundations
… A decreasing trend in the magnitude of excess pore pressures and foundation settlements was observed with decreasing degree of saturation. Air injection technique was also found to perform better under increased confining stresses. Injecting air in a controlled manner (e.g. applying low air …
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Performance of drains in earthquake-induced liquefaction mitigation under new and existing buildings
… to reduce damage, as rapid dissipation of excess pore pressures can be achieved in case of liquefaction. However, further research using physical and numerical modelling techniques, centred on the behaviour of drain arrangements below structures is required in order to generate knowledge …
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