Probabilistic combined loading failure envelopes of a strip footing on spatially variable soil

被引：113

作者：

Cassidy, Mark J. ^{[1
,2
]}

Uzielli, Marco ^{[3
]}

Tian, Yinghui ^{[2
,4
]}

机构：

[1] Univ Western Australia, Ctr Offshore Fdn Syst, UWA Oceans Inst, Nedlands, WA 6009, Australia

[2] Univ Western Australia, ARC Ctr Excellence Geotech Sci & Engn, Nedlands, WA 6009, Australia

[3] Georisk Engn Srl, I-50121 Florence, Italy

[4] Univ Western Australia, Ctr Offshore Fdn Syst, Crawley, WA 6009, Australia

来源：

COMPUTERS AND GEOTECHNICS | 2013年 / 49卷

基金：

澳大利亚研究理事会;

关键词：

Shallow foundation; Spatial variability; Probability; Finite element analysis; Clays; Offshore engineering; Combined loading; BEARING-CAPACITY; SHALLOW FOUNDATIONS; CIRCULAR FOUNDATIONS; SPUDCAN FOUNDATIONS; SKIRTED FOUNDATIONS; PLASTICITY MODEL; COHESIVE SOIL; CLAY; SAND; SETTLEMENTS;

D O I：

10.1016/j.compgeo.2012.10.008

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Failure envelopes written directly in terms of the applied vertical, horizontal and moment loads are finding increased popularity in the design of shallow foundations. However, these are deterministically derived and assume a spatially homogeneous soil without any variation in properties. The spatially variability of soil strength under a strip footing is accounted for in the results of this paper through the Random Finite Element Method, which combines spatial variability analysis, finite element simulation and Monte Carlo simulation. A multitude of combined loading failure envelopes are derived from finite element analysis of a soil domain with randomly generated and spatially varying values. This has allowed the size and shape of the failure envelopes to be defined for distinct levels of their probability of occurrence. These provide guidance for the reliable design of strip footings on clays in heterogeneous soil conditions, and have particular application offshore where horizontal and moment loads can be proportionally large. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：191 / 205

页数：15

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