Geotechnical Modelling =.f<"P51k
J7s\
version 2.2 C_
(s
4dUr8]BkG
by L Olj8T8Z
>;O wBzB
David Muir Wood >d#Ks0\&
6;hZHe 'W
April 2004 4@* `V
$_b^p=
Modelling forms an implicit part of all engineering design but many engineers \C;F5AO
are not aware either of the fact that they are making assumptions as part of ]6TX ) 1
the modelling or of the nature and consequences of those assumptions. Many * 2s(TW
engineers make use of numerical modelling but may not have stopped to think *OM W" NZ;
about the approximations and assumptions that are implicit in that modelling| XyE%< ]
still less about the nature of the constitutive models that may have been invoked. qjV hBu7A
Many engineers are probably not aware of the possibilities and implications of WU<C7
physical modelling either at single gravity or on a centrifuge at multiple gravities. =%$BFg1a(
I have worked for many years at the interface between research and industry S`Wau/7t
in developing numerical models of soil behaviour and in attempting to explain to GXx/pBdy[4
practising engineers the possibilities of soil modelling. In particular, in 1996 and }[8Nr+y
1997 I held a Royal Society Industry Fellowship to be seconded to work within !nyUAZ9 :
Babtie Group with both geotechnical and structural engineers and as a result :gacP?
became more aware of the realities of the conditions within typical consulting lO5*n|Ic,
engineering companies. This book was conceived during that secondment. The rdQ'#}I x
scope of the book attempts to cover the range of guidance that I believe that ^+q4* X6VB
engineers who are undertaking geotechnical modelling need. I hope that they .T }q"
will ¯nd the approach accessible. _0 =$ 2Y^
Much of the material in this book has been developed during courses given to zHW}A
`Rz
¯nal year MEng and postgraduate students at Bristol University and elsewhere. l?swW+ x\
The reader is assumed to have a familiarity with basic soil mechanics and with %[7<GcWl
traditional methods of geotechnical design. Some modest mathematical ability YztW1GvI
is expected: this is not intended to deter, but rather to indicate the nature of [w R x)F"
the theoretical understanding that is necessary if geotechnical modelling is to ;+iw?"
be safely undertaken. 'Z ,T,zW
My previous book Soil behaviour and critical state soil mechanics (Muir :h60
Wood, 1990) used a particular constitutive model for soil behaviour, Cam clay, #\r5Q>
as a vehicle for describing the mechanical behaviour of soils and of some simple {\zB'SNq
geotechnical structures. While Cam clay is presented brie°y in section x3.4.2, %<Te&6NU'
this present book deliberately tries not to repeat too much of the material in NlV,]
$L1T
that earlier book: there is more description of simple alternative constitutive aO>Nev
models and of the modelling of a range of geotechnical systems. The two books GJIM^
should be seen as complementary. gCc::[}\Y
I am grateful to the Royal Society for the Industry Fellowship and to Babtie ejI nJ
Group for welcoming me into their midst: they may not have anticipated that %)@3V8 OI
this would have been the outcome. This book project has inevitably lingered 0xe *\CAo
and I am grateful to Bristol University for giving me a University Research Zi~-m]9U
Fellowship during academic year 2002-2003 in order to give me slightly more f+j -M|A
time to work on the manuscript. The ¯nal surge to completion was greatly `#w`-
helped by a Visiting Professorship funded by the Foundation for the Promotion XH{P@2~l
of Industrial Science which Kazuo Konagai arranged for me at the Institute / |z_z%=
of Industrial Science of the University of Tokyo. Osamu Kusakabe gave me b~<Tgo_/jf
particular assistance in locating references at Tokyo Institute of Technology. [^GXHE=
Jacques Garnier, Charles Ng and Sarah Springman were also generous with W!
q-WU
information and images. X6lUFko
Erdin Ibraim and Adrian Russell provided some helpful suggestions for im- _4h[q4Z
provement. However, the rapid march to complete the manuscript|schnell zum ums*EKjs97
Schlu¼|will surely have left errors for which I apologise and accept full respon- j,i>
1| J
sibility. I can only hope that the irritation attendant on their discovery will be v^QUYsar
more than compensated by the educational bene¯t associated with the working !w -`:d?
through to the correct results. @2Ca]2,4
I am grateful to editorial sta® at E & FN Spon for their patience. sQ8_j
I thank Helen for tolerating my obsessive work on a second book. +p#Q|o'
David Muir Wood tOf18V{a
Abbots Leigh %K|+4ZY3
April 2004 ;H:+w\?8f$
-McDNM
496 pages
