A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A three-step method is proposed to relate engineering parameters of jet-grouting (grout elastic properties, injection velocity) to soilcrete column bearing capacity. 1. The soilcrete column diameter is determined from an energy balance equation. It is assumed that the grout kinematic energy is partially dissipated by friction and partially transformed into the work of the force required to expel the solid grains and pore water from the injected zone. The model has been calibrated with reference data found in the literature. 2. Soilcrete elastic properties are homogenized with a hollow sphere model. The column diameter determined in Step 1 defines the size of the Representative Elementary Volume (REV) considered. Soilcrete is modeled as a fictitious porous medium, in which soil grains are substituted by void pores, and grout constitutes the solid matrix. 3. Maximum settlements around the soilcrete column with the properties determined in Steps 1 & 2 are computed with a Finite Element program.
A three-step method is proposed to relate engineering parameters of jet-grouting (grout elastic properties, injection velocity) to soilcrete column bearing capacity. 1. The soilcrete column diameter is determined from an energy balance equation. It is assumed that the grout kinematic energy is partially dissipated by friction and partially transformed into the work of the force required to expel the solid grains and pore water from the injected zone. The model has been calibrated with reference data found in the literature. 2. Soilcrete elastic properties are homogenized with a hollow sphere model. The column diameter determined in Step 1 defines the size of the Representative Elementary Volume (REV) considered. Soilcrete is modeled as a fictitious porous medium, in which soil grains are substituted by void pores, and grout constitutes the solid matrix. 3. Maximum settlements around the soilcrete column with the properties determined in Steps 1 & 2 are computed with a Finite Element program.
A Hollow Sphere Model to Dimension Soilcrete Columns
GeoCongress 2012 ; 2012 ; Oakland, California, United States
GeoCongress 2012 ; 1006-1015
2012-03-29
Conference paper
Electronic Resource
English
A Hollow Sphere Model to Dimension Soilcrete Columns
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