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 69 for “"Earth Pressure"”.
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A Gelatin Model for Lateral Earth Pressure
Made available in DSpace on 2014-12-08T23:55:57Z (GMT). No. of bitstreams: 1 6406096.pdf: 5529818 bytes, checksum: cf7e0391cad78cb4a8c674ac97855113 (MD5) Previous issue date: 1963
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The coefficient of earth pressure at rest
An investigation of the coefficient of earth pressure at rest has been conducted with the objective of developing a better understanding about the behavior of this coefficient with consolidation, aging, overconsolidation, densification, and preshearing.
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Active earth pressure from c-Ø soil subjected to surcharge and seismic loadings
… during 1926-1929 for calculating total active earth pressure from cohesionless soil (f soil) backfills. In recent past, attempts have been made to develop analytical expressions for the total seismic active force on retaining structures from the c-f soil backfills considering both horizontal …
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Earth pressure balance (EPB) tunneling induced settlements in the Tren Urbano Project, Rio Piedras, Puerto Rico
… of twin tunnels (6.3m diameter) with Earth Pressure Balance machines in weathered alluvial soil. The depth of the cover over the tunnel crown varies from 13m to 10m. The twin tunnels, which connect the Rio Piedras Station and University of Puerto Rico Station, each have a length of 433 …
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Examination of excavation chamber pressure behavior on a 17.5 m diameter earth pressure balance tunnel boring machine
This thesis examines excavation chamber pressure behavior within a 17.5 m diameter earth pressure balance tunnel boring machine (EPBM) used on the Alaskan Way viaduct replacement tunnel project in Seattle, Washington, USA. The study examines behavior during the first 150 rings of tunneling (10% of …
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The Influence of Blast and Earth Pressure Loadings on The Dynamic Response of Flexible Underground Two-Hinged Arches
Made available in DSpace on 2014-12-05T17:37:11Z (GMT). No. of bitstreams: 1 6004011.pdf: 4054461 bytes, checksum: 226c1d31aa733e3e9a3f9b3882d34783 (MD5) Previous issue date: 1960
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Numerical simulation of ground movements and structural forces in lining for Earth Pressure Balance (EPB) tunneling in clay
… mechanized tunnel construction using an Earth Pressure Balance (EPB) machine in clay. The model uses the commercial FE code, Plaxis 3D, to represent the face pressure, conical shield, grouting process and activation of precast segmental concrete lining systems through a set of boundary …
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Earth pressure balance (EPB) shield tunneling in Bangkok : ground response and prediction of surface settlements using artificial neural networks
Although Earth Pressure Balance (EPB) shields have been used for several decades, very little information exists about the actual mechanisms of shield-ground interaction. The ground response mechanism induced by EPB tunneling is difficult to understand, because this requires not only reliable …
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The Coefficient of Earth Pressure at Rest and Deformation and Densification of Granular Soils Subjected to Static and Dynamic Loading
A comprehensive laboratory testing program, mainly the series of oedometer test with lateral stress measurement, were conducted on Ottawa, Lake Michigan Beach, Niigata, and Toyoura sand. Reconstituted dry sand specimens were subjected to 7 different loading histories, and the maximum effective …
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Evolução de células de pressão total e experiência da COPPE
… comprehensive study of design and performance of earth pressure cells as used in soils and rigid boundaries (diaphragm walls, sheet piling etc) was firstly done, and a general classification of these instruments was presented. It was sought to estabilish limiting values for the differents factors …
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Modeling, estimation, and control of robot-soil interactions
… the wealth of research on the similar problem of earth pressure on retaining walls. There are a number of existing earth pressure models. These models typically provide estimates of force which are in uncertain relation to the true force. A recent technique, known as numerical limit analysis, …
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Experimental study of earth pressures on retaining structures
… laboratory and field experimental studies of earth pressures exerted on retaining structures and laboratory studies of the at-rest earth pressure coefficient are summarized. The current methods used to evaluate the earth pressures due to compaction are reviewed. The design features of a new …
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Cálculo automático de cortinas ancoradas pelo método de Brinch Hansen
… fundamentals of Brinch Hansen’s method of earth pressure calculation is given in this work, and a computer program is presented for analysis of anchored sheet-pile walls with one or no yield hinges in its state of failure. A comparison is made between the results found by this method and …
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Integral bridge abutment and backfill behaviour
… ratcheting — which results in increased lateral earth pressures along with settlement at the bridge approach. Uncertainty surrounding strain ratcheting is reflected through design restrictions. This research investigated strain ratcheting and ways it can be limited through smarter design. …
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A study of the seismic performance of the Los Angeles River floodcontrol channel during the 1994 Northridge earthquake
… River Floodway System by the 1994 Northridge Earthquake. The scope of this research includes: a study of the damage to two specific sections of the L.A. River Channel, a comparison of damaged and undamaged sections of the floodway channel, an analysis to determine the mechanisms of damage, and …
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An axisymmetrical model for a single vertical pile in sand
… mechanism. The stresses and coefficient of earth pressure acting on the pile shaft were reported. A new failure mechanism was developed which varies with: pile geometry, coefficient of earth pressure, shaft roughness and angle of shearing resistance of sand. A theoretical model was developed …
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Estudo em modelo reduzido, em material granular, do comportamento de sistemas de contenção, paredes ancoradas e solo reforçado, utilizando um tipo não convencional de reforço e ancoragem
… structures, anchored walls and reinforced earth. The anchorage and reinforcing elements used, a non conventional type, were studied under different configurations. The anchorages, as the reinforcing elements are made of small plates fixed along a steel cable. It is a rigid wall and the …
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