Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Exact Series Solution for Plane Strain Consolidation of Stone Column Improved Soft Soil Accounting for Space-Dependent Total Stresses
This paper provides an analytical solution to predict the free strain consolidation of a stone column supported soft soil under plane strain configuration. The external load on the ground surface was assumed to be applied instantly, which results in time-independent but space-dependent total stresses in the composite ground. A rigorous analytical solution to evaluate the changes of excess pore water pressure with time at any point in the model was derived as a double series, using the method of separation of variables. The obtained solution can capture any distribution patterns of total stresses caused by the external load, where the total stresses are described as separable functions against spatial coordinates. The validation of the proposed solution was exhibited through an example evaluating the effect of change patterns of the total stresses with depth on consolidation of the composite ground. The calculation results were presented graphically in terms of average degree of consolidation for column and for soft soil, and average differential settlement between the column and soil regions. The more diminution of the total stresses with depth led to accelerated consolidation of the composite ground and more significant reduction in the average differential settlement between the column and the soil.
Exact Series Solution for Plane Strain Consolidation of Stone Column Improved Soft Soil Accounting for Space-Dependent Total Stresses
This paper provides an analytical solution to predict the free strain consolidation of a stone column supported soft soil under plane strain configuration. The external load on the ground surface was assumed to be applied instantly, which results in time-independent but space-dependent total stresses in the composite ground. A rigorous analytical solution to evaluate the changes of excess pore water pressure with time at any point in the model was derived as a double series, using the method of separation of variables. The obtained solution can capture any distribution patterns of total stresses caused by the external load, where the total stresses are described as separable functions against spatial coordinates. The validation of the proposed solution was exhibited through an example evaluating the effect of change patterns of the total stresses with depth on consolidation of the composite ground. The calculation results were presented graphically in terms of average degree of consolidation for column and for soft soil, and average differential settlement between the column and soil regions. The more diminution of the total stresses with depth led to accelerated consolidation of the composite ground and more significant reduction in the average differential settlement between the column and the soil.
Exact Series Solution for Plane Strain Consolidation of Stone Column Improved Soft Soil Accounting for Space-Dependent Total Stresses
Lecture Notes in Civil Engineering
Barla, Marco (Herausgeber:in) / Di Donna, Alice (Herausgeber:in) / Sterpi, Donatella (Herausgeber:in) / Doan, Sam (Autor:in) / Fatahi, Behzad (Autor:in) / Khabbaz, Hadi (Autor:in)
International Conference of the International Association for Computer Methods and Advances in Geomechanics ; 2021 ; Turin, Italy
15.01.2021
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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