ISSN: 0149-6115
Page Count: 17

Tests on Model Jacked Piles in Calcareous Sand

Chin, JT
Senior engineer,Junitera Konsultane (SEA) Pte Ltd., WISMA JK,

Poulos, HG
Senior principalprofessor of civil engineering,Coffey Partners (Intl.) Pte Ltd.School of Civil and Mining Engineering, University of Sydney,NSW,

Abstract

This paper presents the results of a series of displacement-controlled cyclic axial loading tests of model jacked piles in dry calcareous sand. The tests were conducted using a large test facility comprising a test chamber 1.0 m in internal diameter and 1.55 m in height. Model instrumented aluminum jacked piles 50 and 100 mm in diameter were used to investigate scale effects on the degradation of skin friction capacity under cyclic loading conditions. Test results are presented for the response during jacking (installation), initial static compression loading, cyclic loading, and post-cyclic static compression loading response. It is shown that the degradation of skin friction is governed by the “cyclic slip displacement” model.

Keywords:
cyclic axial loading, jacked piles, calcareous sand, degradation of skin friction

Paper ID: GTJ10339J
DOI: 10.1520/GTJ10339J
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