Estimation of footing settlement in sand

Jun Hwan Lee, Rodrigo Salgado

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The settlement of foundations under working load conditions is an important design consideration. Well-designed foundations induce stress-strain states in the soil that are neither in the linear elastic range nor in the range usually associated with perfect plasticity. Thus, in order to accurately predict working settlements, analyses that are more realistic than simple elastic analyses are required. The settlements of footings in sand are often estimated based on the results of in situ tests, particularly the standard penetration test (SPT) and the cone penetration test (CPT). In this article, we analyze the load-settlement response of vertically loaded footings placed in sands using both the finite element method with a nonlinear stress-strain model and the conventional elastic approach. Calculations are made for both normally consolidated and heavily overconsolidated sands with various relative densities. For each case, the cone penetration resistance qc is calculated using CONPOINT, a widely tested program that allows computation of qc based on cavity expansion analysis. Based on these analyses, we propose a procedure for the estimation of footing settlement in sands based on CPT results.

Original languageEnglish
Pages (from-to)1-28
Number of pages28
JournalInternational Journal of Geomechanics
Volume2
Issue number1
DOIs
Publication statusPublished - 2002 Dec 1

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footing
sand
cone penetration test
testing
penetration test
in situ test
resistance to penetration
finite element method
plasticity
cavity
penetration
soil
methodology

All Science Journal Classification (ASJC) codes

  • Soil Science

Cite this

Lee, Jun Hwan ; Salgado, Rodrigo. / Estimation of footing settlement in sand. In: International Journal of Geomechanics. 2002 ; Vol. 2, No. 1. pp. 1-28.
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Estimation of footing settlement in sand. / Lee, Jun Hwan; Salgado, Rodrigo.

In: International Journal of Geomechanics, Vol. 2, No. 1, 01.12.2002, p. 1-28.

Research output: Contribution to journalArticle

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AB - The settlement of foundations under working load conditions is an important design consideration. Well-designed foundations induce stress-strain states in the soil that are neither in the linear elastic range nor in the range usually associated with perfect plasticity. Thus, in order to accurately predict working settlements, analyses that are more realistic than simple elastic analyses are required. The settlements of footings in sand are often estimated based on the results of in situ tests, particularly the standard penetration test (SPT) and the cone penetration test (CPT). In this article, we analyze the load-settlement response of vertically loaded footings placed in sands using both the finite element method with a nonlinear stress-strain model and the conventional elastic approach. Calculations are made for both normally consolidated and heavily overconsolidated sands with various relative densities. For each case, the cone penetration resistance qc is calculated using CONPOINT, a widely tested program that allows computation of qc based on cavity expansion analysis. Based on these analyses, we propose a procedure for the estimation of footing settlement in sands based on CPT results.

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