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Time-Dependent Response of Rectangular Piled Rafts in Clayey Soils.

Authors :
Bhartiya, Priyanka
Basu, Dipanjan
Chakraborty, Tanusree
Source :
Journal of Geotechnical & Geoenvironmental Engineering. May2022, Vol. 148 Issue 5, p1-11. 11p.
Publication Year :
2022

Abstract

Time-dependent response of piled raft foundations (PRFs) in saturated, normally consolidated and moderately overconsolidated clayey soils under the single-drainage condition is investigated using three-dimensional, elastoplastic finite-element (FE) analysis with the modified cam clay (MCC) soil constitutive model. Four different types of clay (Boston Blue Clay, San Francisco Bay Mud, London Clay, and Shanghai Clay) with different values of overconsolidation ratio (OCR) (OCR=1 , 2, and 5) and 20 different configurations of rectangular PRFs are considered for the study. The settlement response and load sharing of PRFs are investigated. Regression analyses are performed with the FE analysis results to obtain fitted equations for immediate settlement, primary consolidation settlement, and degree of consolidation of PRFs. These equations are applicable to PRFs with cast in situ bored piles similar in size to those considered in this study. The proposed equations can be used to estimate time-dependent PRF settlement in normally consolidated and moderately overconsolidated clay as part of preliminary design calculations. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10900241
Volume :
148
Issue :
5
Database :
Academic Search Index
Journal :
Journal of Geotechnical & Geoenvironmental Engineering
Publication Type :
Academic Journal
Accession number :
155860642
Full Text :
https://doi.org/10.1061/(ASCE)GT.1943-5606.0002758