SHAFT FRICTION OF PILES IN CLAY--A SIMPLE FUNDAMENTAL APPROACH

THIS APPROACH TO THE CALCULATION OF THE SHAFT RESISTANCE OF PILES IN CLAY USES SIMPLE EFFECTIVE STRESS PRINCIPLES. ALTHOUGH THE METHOD INVOLVES A NUMBER OF SIMPLIFYING ASSUMPTIONS IT APPEARS TO ACCOUNT FOR MANY OF THE OBSERVED FEATURES OF PILE BEHAVIOR AND MAY PROVE USEFUL FOR ESTIMATING SHAFT RESISTANCE AND NEGATIVE SKIN FRICTION IN NEW OR UNUSUAL GROUND CONDITIONS. THIS ARTICLE IS ONE OF SIX PAPERS IN THIS ISSUE WHICH DEAL WITH THE STATE-OF-THE-ART OF MODERN PILING TECHNIQUES. THE OTHERS DISCUSS TRENDS IN PILING EQUIPMENT DESIGN, A TABULAR GUIDE TO PILE SELECTION, RESEARCH ON PILE CAPS AND PILING FOR BRIDGEWORKS. /AUTHOR/