Shaft Resistance of Piles under Horizontal Force and Overturning Moment

Abstract

To investigate shaft friction of a piles during an earthquake, a horizontal cyclic loading test with overturning moment, a vertical monotonic loading test, and a vertical cyclic loading test were conducted by using a geotechnical centrifuge. The amplitudes of the shaft friction under the horizontal cyclic loading were remarkably larger than those under the vertical loadings. This tendency was significant at the upper part of pile, suggesting that the horizontal subgrade reaction on the pile increased the confine pressure around the pile.