Clayey Soil Reinforced with Stone Column Group: Model Tests and AnalysesSource: Journal of Geotechnical and Geoenvironmental Engineering:;2011:;Volume ( 137 ):;issue: 012DOI: 10.1061/(ASCE)GT.1943-5606.0000552Publisher: American Society of Civil Engineers
Abstract: Fully drained, load-controlled laboratory model tests and their numerical simulations are presented. The tests were performed on adequately instrumented, small scale physical models of floating stone column group foundations placed in slurry deposited clayey soil beds with known effective stress states. Effect of various group foundation parameters, such as area ratio, length of columns, relative density, and moisture content of the column material is evaluated. The numerical analyses consist of three-dimensional, elastoplastic, finite-element analyses of the model foundation. In the analyses, the clayey soil behavior is represented by the modified Cam-clay model, and the stone column and mat are represented by the elastic, fully plastic Mohr-Coulomb constitutive relationship. The finite-element analysis was successful in predicting the model test results with reasonable accuracy. The results are presented in nondimensional form. The major foundation parameters affecting the group response were identified as area ratio, normalized column length, Young’s modulus of column, overconsolidation ratio, initial geostatic stresses, and clayey soil parameters.
|
Show full item record
contributor author | J. T. Shahu | |
contributor author | Y. R. Reddy | |
date accessioned | 2017-05-08T21:47:19Z | |
date available | 2017-05-08T21:47:19Z | |
date copyright | December 2011 | |
date issued | 2011 | |
identifier other | %28asce%29gt%2E1943-5606%2E0000567.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/62340 | |
description abstract | Fully drained, load-controlled laboratory model tests and their numerical simulations are presented. The tests were performed on adequately instrumented, small scale physical models of floating stone column group foundations placed in slurry deposited clayey soil beds with known effective stress states. Effect of various group foundation parameters, such as area ratio, length of columns, relative density, and moisture content of the column material is evaluated. The numerical analyses consist of three-dimensional, elastoplastic, finite-element analyses of the model foundation. In the analyses, the clayey soil behavior is represented by the modified Cam-clay model, and the stone column and mat are represented by the elastic, fully plastic Mohr-Coulomb constitutive relationship. The finite-element analysis was successful in predicting the model test results with reasonable accuracy. The results are presented in nondimensional form. The major foundation parameters affecting the group response were identified as area ratio, normalized column length, Young’s modulus of column, overconsolidation ratio, initial geostatic stresses, and clayey soil parameters. | |
publisher | American Society of Civil Engineers | |
title | Clayey Soil Reinforced with Stone Column Group: Model Tests and Analyses | |
type | Journal Paper | |
journal volume | 137 | |
journal issue | 12 | |
journal title | Journal of Geotechnical and Geoenvironmental Engineering | |
identifier doi | 10.1061/(ASCE)GT.1943-5606.0000552 | |
tree | Journal of Geotechnical and Geoenvironmental Engineering:;2011:;Volume ( 137 ):;issue: 012 | |
contenttype | Fulltext |