Stress changes in adjacent soils of tapered piles during installation into sand

Le résumé fourni par la source

Tapered piles with increasing pile diameter from the pile tip to the top can develop high vertical bearing capacity, especially a high shaft friction owing to tapering and wedging effects. Many researchers have reported these merits over conventional straight piles based on small model tests and furthermore the mechanism has been explained using a cylindrical cavity expansion theory. However, few researchers have examined the installation effect of tapered piles. There must be a certain installation effect even in a tapered pile, and its effect could be affected by its pile geometry. Therefore, this study investigates the radial and vertical pressure in adjacent soils between a straight pile and a tapered pile during installation into sand at 1g. The test results suggest that the profiles of pressure changes around the piles are quite different, leading to differences in the radial stress distribution between tapered and straight piles.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.