Analytical method for estimation of negative skin friction on foundation surface in collapsible loess soil

Author

Dashjamts, Dalai

Author_Institution

Department of Geotechnics, School of Civil Engineering and Architecture, Mongolian University of Science and Technology, Ulaanbaatar Mongolia

fYear

2012

fDate

18-21 Sept. 2012

Firstpage

1

Lastpage

5

Abstract

Pile foundations on structurally weak easily compressible clayey soils or collapsible sandy loess soil are required to be footed through this collapsible soil layer deeper in non-collapsible soil below. In such conditions negative skin friction on a pile surface in contact with collapsible soil layer can be caused due to increased load pressure, soil wetting and thawing processes resulting in additional settlement in foundation. Briefly, the negative skin friction can be described as downward drag force exerted on a pile surface. This part presents the new analytical method for determining the negative skin friction on the surface of the pile.

Keywords

estimation theory; foundations; geotechnical engineering; melting; soil; collapsible sandy loess soil; compressible clayey soils; foundation surface; negative skin friction; noncollapsible soil layer; pile foundation; pile surface; soil wetting; thawing process; Estimation; Force; Friction; Moisture; Skin; Soil; Surface treatment; collapsible soil; negative skin friction; settlement; thawing;

fLanguage

English

Publisher

ieee

Conference_Titel

Strategic Technology (IFOST), 2012 7th International Forum on

Conference_Location

Tomsk

Print_ISBN

978-1-4673-1772-6

Type

conf

DOI

10.1109/IFOST.2012.6357796

Filename

6357796