Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Soil Liquefaction Prevention by Electro-Osmosis and an In Situ Method to Quantify a Soil's Tendency to Liquefy
Soil liquefaction is one of the primary geotechnical failures that occur as a result of a seismic event. Electro-osmosis technology involves placing electrodes beneath an existing structure to prevent soil liquefaction in certain soils by reducing the pore pressure rise during the earthquake event. Determining the applicability of electro-osmosis to prevent soil liquefaction requires an in situ tool to quantify both soil liquefaction potential and electro-osmosis applicability to that soil. The in situ characterization tool is pushed or self-bored into the subsurface with an expanding/contracting bladder set that imposes a cyclic shear stress reversal under zero volume change on a body of soil in situ similar to what occurs during a seismic event. Pressure transducers within the device monitor the resulting pore pressure during the cyclic shear stress reversals. The tool also contains electrodes that can be electrically energized during the imparted stress reversals to quantify in situ the potential of electro-osmosis in preventing soil liquefaction.
Soil Liquefaction Prevention by Electro-Osmosis and an In Situ Method to Quantify a Soil's Tendency to Liquefy
Soil liquefaction is one of the primary geotechnical failures that occur as a result of a seismic event. Electro-osmosis technology involves placing electrodes beneath an existing structure to prevent soil liquefaction in certain soils by reducing the pore pressure rise during the earthquake event. Determining the applicability of electro-osmosis to prevent soil liquefaction requires an in situ tool to quantify both soil liquefaction potential and electro-osmosis applicability to that soil. The in situ characterization tool is pushed or self-bored into the subsurface with an expanding/contracting bladder set that imposes a cyclic shear stress reversal under zero volume change on a body of soil in situ similar to what occurs during a seismic event. Pressure transducers within the device monitor the resulting pore pressure during the cyclic shear stress reversals. The tool also contains electrodes that can be electrically energized during the imparted stress reversals to quantify in situ the potential of electro-osmosis in preventing soil liquefaction.
Soil Liquefaction Prevention by Electro-Osmosis and an In Situ Method to Quantify a Soil's Tendency to Liquefy
Hocking, Grant (Autor:in) / Hebner, Geoffrey C. (Autor:in)
GeoShanghai International Conference 2006 ; 2006 ; Shanghai, China
11.05.2006
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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