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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 14 of 14 for “"Vertical drains"”.
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Soil improvement by vertical drains
Vertical drains are used in soft clays and silts to accelerate primary consolidation. In this study a practical method for predicting the magnitude and rate of settlement and pore water pressure dissipation of soft clays under embankment type of loading is described. A computer procedure, ILLICON, …
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Techniques to evaluate the field performance of vertical drains
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1983.
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Ground improvement using vacuum preloading together with prefabricated vertical drains
… which is applied to the soft soil through the vertical drains, results in an isotropic increase in effective stress within the soil mass, and therefore, can be applied with full intensity in a single stage. On the other hand an equivalent fill preload is applied in stages to avoid instability …
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Numerical simulation of the response of sandy soils treated with pre-fabricated vertical drains
… response of sandy soils treated with earthquake drains, for liquefaction risk mitigation. This thesis describes 1)the implementation of finite 1-D elements to simulate the uncoupled mechanical and flow properties of perforated vertical (PV) drains, 2) the investigation of scaling laws for laminar …
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Finite element analysis of embankments on soft ground incorporating reinforcement and drains.
… over soft compressible soils containing vertical drains. Secondly, to demonstrate the ability to model accurately such embankments. Finally, to develop simplified procedures to be used in the design of embankments over soft soils. The modifications to the finite element program, CRISP, …
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Análise de recalques do aterro experimental II sobre a argila mole de Sarapuí com elementos drenantes
… instrumented sections being five of them with vertical drains and the other two with no vertical drains. The methods used for the calculation of final settlements and coefficients of consolidation were ASAOKA, ELLSTEIN, LONG e CAREY and TAN. For the calculation of the final settlement the …
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Análise de dados piezométricos de um aterro sobre argila mole com drenos verticais
… II of IPR-DNER on Sarapui’s soft clay with vertical drains. Initially, the excess poro pressure data from installed Casagrande and Hydraulic piezometers of all the sections are analised and compared. Follows a bibliographical revision of the theory of vertical drains, including a description …
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Uma análise de recalques pelo Método de Asaoka modificado com enfoque probabilístico
… seven instrumented sections, five of them with vertical drains and two with no vertical drains. Because of the availability of results from several plates, a probabilistic approach is applied to the analysis, makins it possible to obtain confidence intervals instead of an only deterministic …
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Adensamento radial de argilas: programação automática e estudo experimental
… consolidation (cen-tripetal drainage towards a vertical drain of sand and mica). This test aims at the determination of the coefficient of horizontal permeability of clayey soils, which is important for designing sand vertical drains to accelerate consolidation of such soils.
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Utilização de geotêxteis como reforço de aterros sobre solos moles
… of a second large trial embankment on vertical drains. This experimental program was a part of a large research program sponsored by the Highway Research Institute (Brazil). Six text sections, in which geotextile type and installation method varied, were constructed. Measurements were …
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Performance of drains in earthquake-induced liquefaction mitigation under new and existing buildings
… of currently available mitigation techniques. Vertical drains are an effective countermeasure technique, extensively utilised 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 …
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Finite element analysis of embankment on soft Indian River clay
… installation of an array of prefabricated vertical drains. The performance was monitored during staged construction and for a period of 1.25 years after construction (2006-2008). During this, the embankment settled up to 6.5 feet, while large lateral spreading in the clay was restrained by …
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Column-Supported Embankments: Full-Scale Tests and Design Recommendations
… construction methods such as prefabricated vertical drains (PVDs) or staged construction, and 2) protection of adjacent facilities from distress, such as settlement of existing pavements when a roadway is being widened. One of the most significant obstacles limiting the use of CSEs is the …