Studies of relation between drag load and time of negative skin friction of pile foundation

Abstract

Abstract:

The development process of negative skin friction is divided into two stages. At the first stage, it is mainly controlled by the relative displacement between soil and pile, and at the second stage, it is mainly controlled by the increase of soil strength caused by consolidation. Based on the re-analysis of data from history cases in Japan, Canada and Thailand, the relation between drag load and time can be fitted with hyperbolic curve, in which the physical meanings of parameters are preliminarily discussed. The results of history cases indicate that the calculated results fit well with in-situ test data, which verifies the feasibility of the method presented.

Key words: negative skin friction, drag load, re-analysis, hyperbolic curve

CLC Number:

TU 473

XIAO Jun-hua, YUAN Ju-yun, ZHAO Xi-hong. Studies of relation between drag load and time of negative skin friction of pile foundation[J]., 2009, 30(9): 2779-2782.

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