Rapid pile load tests in the geotechnical centrifuge

Rapid pile load tests in the geotechnical centrifuge

Holscher, P.
Van Tol, A.F.
Huy, N.Q.

Civil Engineering and Geosciences

Geoscience & Engineering

2012-09-20

Centrifiige experiments were carried out to gain insight into the factors that affect the mobilized resistance during rapid load testing on piles in sand. The influence of generated pore water pressure during rapid load tests is shidied, and its effect on the commonly used unloadmg point method to derive the staticpile capacity. This paper describes the testing program and the test set-up. Typical measurement results from 36 rapid- and 12 static load tests are presented. The effects of the loading rate and excess pore pressures on the pile resistance are shown. The tests confirm that a rapid load test can overestimate the static capacity due to pore water pressure, for piles in medium to fme sands. The results of the pore pressure measurements show a combination of positive and negative excess pore pressure in the zone around the pile base, which can be explained by compression, volumetric behavior durmg shearmg and pore fluid flow around the pile.

piles
sand
rapid load test
centrifuge modeling
bearing capacity
pore pressure

http://resolver.tudelft.nl/uuid:9598ccb2-9b75-4493-9d30-dbd1c76eae4d

Japanese Geotechnical Society

978-4-89010-597-7

Proceedings of the 9th International conference on testing and design methods for deep foundations, 18-20 september 2012, Kanazawa, Japan

Institutional Repository

conference paper

(c) 2012 The Author(s)