A Numerical Study of the Installation-Induced Stresses and Excess Pore-Water Pressures Around Rigid Inclusions using a Linear-Elastic Perfectly-Plastic Soil
Rigid inclusions are used to improve the load-bearing capabilities of poor soils. The construction procedure for grouted rigid inclusions in the field involves displacement of the soft soil producing changes in pore-water pressures, and as a result, changes in effective stresses in the immediate vicinity of these elements. A numerical study was performed to examine the post-construction changes in the installation-induced stresses and pore-water pressures around the rigid inclusions. The finite element software PLAXIS was used in the numerical analysis. The soft soil is modeled as a linear elastic perfectly plastic Tresca material. Cylindrical cavity expansion is implemented in the finite element models to represent the rigid inclusion construction process. The results indicate that the installation-induced stresses in the vicinity of the rigid inclusions expressed in the form of earth pressure coefficient K, increase with the dissipation of excess pore-water pressures.
A. J. Rivera et al., "A Numerical Study of the Installation-Induced Stresses and Excess Pore-Water Pressures Around Rigid Inclusions using a Linear-Elastic Perfectly-Plastic Soil," Geotechnical Special Publication, vol. GSP 256, pp. 2214-2224, American Society of Civil Engineers (ASCE), Jan 2015.
The definitive version is available at https://doi.org/10.1061/9780784479087.205
International Foundations Congress and Equipment Expo 2015, IFCEE 2015 (2015: Mar. 17-21, San Antonio, TX)
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
Pore Pressure; Pressure Distribution; Soils; Water, Construction Procedures; Construction Process; Cylindrical Cavity Expansion; Dissipation Of Excess Pore Water Pressure; Earth Pressure Coefficient; Excess Pore Water Pressure; Finite Element Software; Load Bearing Capabilities, Finite Element Method
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