DBPapers
DOI: 10.5593/SGEM2015/B12/S2.096

SOME REMARKS ON CMC COLUMN AXIAL CAPACITY TESTING.

J. Rybak
Friday 7 August 2015 by Libadmin2015

References: 15th International Multidisciplinary Scientific GeoConference SGEM 2015, www.sgem.org, SGEM2015 Conference Proceedings, ISBN 978-619-7105-32-2 / ISSN 1314-2704, June 18-24, 2015, Book1 Vol. 2, 725-730 pp

ABSTRACT
According to recommendations in Eurocode 7 [11], every pile foundation design should be based on the results of a static axial compressive load test (directly or as a reference test for static calculations or dynamic testing). The ultimate load (capacity) is obtained on the basis of those results. In many cases, limitations of loading force (due to too large sizes of kentledge or limited pull-out resistance of anchoring piles), do not enable us to derive the ultimate capacity directly from tests. Brinch-Hansen 80% [1], Chin-Kondner [3] and Decourt [4] methods (based on the simplest least squares approximation) are examined, in order to obtain a proper value of the ultimate pile load from a non-failed test of the CMC columns. The obtained results (conclusions) can be used in engineering practice to evaluate the risk linked to the extrapolation of test results.

Keywords: CMC column, static load test, ultimate axial capacity