RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

UPLIFT CAPACITY OF BELLED AND MULTI-BELLED PILES IN DENSE SAND

Auteur(s) / Author(s)

HONDA Tsuyoshi (1) ; HIRAI Yoshio (1) ; SATO Eiji (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Research and Development Institute, Takenaka Corporation, Chiba, JAPON
(2) Soil Remediation Engineering Department, Takenaka Corporation, JAPON

Résumé / Abstract

This paper evaluates the uplift capacity of belled and multi-belled piles in dense sand. A two-dimensional distinct element (DE) analysis was applied in pullout tests on single piles to investigate the uplift resistance of the piles, the soil behavior around the piles, and the interaction between the soil and the pile surface. It was observed from the DE analysis that the soil mass adjacent to the projections of the belled and multi-belled piles moved vertically, and that the soil movements leaned slightly with the occurrence of relative displacement between the soil and the pile surface. A theoretical solution for predicting the uplift capacity of belled and multi-belled piles was derived from an upper bound limit analysis based on the soil movements in the DE analysis. The solution was able to reproduce the ultimate uplift resistance in the DE analysis using the friction angles in the aggregates and on the pile surface that were evaluated from a simulation of direct and simple shear tests. In addition, a continuity equation that satisfied the relationship between the displacement vector of the soil mass adjacent to the projections and the change in volume around the soil mass was proposed for predicting the uplift capacity of actual piles under axisymmetric conditions. The theoretical solution obtained with the continuity equation was in good agreement with the pullout resistance of the belled and multi-belled piles in centrifuge model tests and full-scale tests conducted in situ.

Revue / Journal Title

Soils and foundations    ISSN  0038-0806   CODEN SOIFBE 

Source / Source

2011, vol. 51, no3, pp. 483-496 [14 page(s) (article)] (16 ref.)

Langue / Language

Anglais

Editeur / Publisher

Japanese Geotechnical Society, Tokyo, JAPON  (1968) (Revue)

Mots-clés anglais / English Keywords

Comparative study

;

Full scale mockup test

;

Case study

;

Shear

;

Displacement

;

Aggregate(materials)

;

Mechanical properties

;

Discrete element method

;

Dense phase

;

Sand

;

Peeling test

;

Experimental study

;

Structure soil interaction

;

Pile foundations

;

Mots-clés français / French Keywords

Etude comparative

;

Essai vraie grandeur

;

Etude cas

;

Cisaillement

;

Déplacement

;

Granulat

;

Propriété mécanique

;

Méthode élément discret

;

Phase dense

;

Sable

;

Essai arrachement

;

Etude expérimentale

;

Interaction sol structure

;

Fondation sur pieu

;

Mots-clés espagnols / Spanish Keywords

Estudio comparativo

;

Prueba sobre modelo en escala natural

;

Estudio caso

;

Cizalladura

;

Desplazamiento

;

Agregado

;

Propiedad mecánica

;

Método elemento discreto

;

Fase densa

;

Arena

;

Prueba desgarradura

;

Estudio experimental

;

Interacción suelo estructura

;

Fundación sobre pilotes

;

Mots-clés d'auteur / Author Keywords

(belled pile)

;

dense sand

;

distinct element method

;

(multi-belled pile)

;

pulling test

;

(uplift capacity)

;

(IGC: E4/E13)

;

Localisation / Location

INIST-CNRS, Cote INIST : 19776, 35400050910612.0100

Nº notice refdoc (ud4) : 24508886



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas