The end-bearing capacity of piles penetrating into crushable soils

被引：4

作者：

Zhang, C. ^{[1
]}

Nguyen, G. D. ^{[1
]}

Einav, I. ^{[1
]}

机构：

[1] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia

来源：

GEOTECHNIQUE | 2013年 / 63卷 / 05期

基金：

澳大利亚研究理事会;

关键词：

bearing capacity; constitutive relations; numerical modelling; particle crushing/crushability; piles; BREAKAGE MECHANICS; GRANULAR-MATERIALS; SAND; INSTALLATION; SHEARING; STATE; MODEL; SIZE;

D O I：

10.1680/geot.11.P.117

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

A new formula is proposed for the end-bearing capacity of piles penetrating into crushable soils. The formula is based on a breakage mechanics model that accounts for the evolution of the grain size distribution (GSD) due to grain crushing with only physically meaningful parameters. The model is integrated using the finite-element method to study the penetration problem. Predictions of GSDs surrounding piles and pile end-bearing capacities are validated against experiments. Next, a parametric study is carried out to quantify the effects of grain crushing on the bearing capacity, and then to establish the formula. The predictive capability of the new formula is highlighted against predictions by previous formulae, which highlights its superior origins.

引用

页码：341 / 354

页数：14

共 51 条

[1]

Abaqus, 2007, ABAQUS EXPL US MAN V

[2]

Al-Awquati A., 1975, THESIS DUKE U

[3]

Alba JL, 1999, ENGINEERING FOR CALCAREOUS SEDIMENTS, VOL 1, P29

[4] Changes to particle characteristics associated with the compression of sands [J].

Altuhafi, F. N. ;

Coop, M. R. .

GEOTECHNIQUE, 2011, 61 (06) :459-471

[5] STRAIN PATH METHOD [J].

BALIGH, MM .

JOURNAL OF GEOTECHNICAL ENGINEERING-ASCE, 1985, 111 (09) :1108-1138

[6]

Ben-Nun O., 2010, THESIS U SYDNEY AUST

[7] The role of self-organization during confined comminution of granular materials [J].

Ben-Nun, Oded ;

Einav, Itai .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2010, 368 (1910) :231-247

[8] Particle breakage during shearing of a carbonate sand [J].

Coop, MR ;

Sorensen, KK ;

Freitas, TB ;

Georgoutsos, G .

GEOTECHNIQUE, 2004, 54 (03) :157-163

[9] An elastoplastic model for granular materials taking into account grain breakage [J].

Daouadji, A ;

Hicher, PY ;

Rahma, A .

EUROPEAN JOURNAL OF MECHANICS A-SOLIDS, 2001, 20 (01) :113-137

[10] An enhanced constitutive model for crushable granular materials [J].

Daouadji, Ali ;

Hicher, Pierre-Yves .

INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, 2010, 34 (06) :555-580

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