OBSERVATION AND PREDICTION - Introduction to Soft Soil Geotechnique: Content, Context and Application - page 137

M

a

C

q critical state

q

C

B

B

yield ing

pre-
consolidation c

elastic

p 0 p'

A

shea r strain

A

p' C

p' A p' B p' C p' A p' B

0

<

p'

ln p'

A v A

v A A

B B

v B

v B

b

C

v C C

v C

swelling swelling

isotropic compression
critical state

isotropic compression
critical state

v v

Figure 9.2a Principle of the Modified Cam-Clay model; (a) the correspondence of the p-q
space and the v-p space for a hardening stress path A-B-C, (b) the related v- ln p space, (c)
hardening behaviour

M

a

B

c

q critical state

q B

yielding

C C

elastic

A p' p 0

shea r strain

A

p' A

p' C

p' C p' B

p' A p' B

0

<

p' ln p'

v C

v C

C

C

b

A

A

v A v A

v B

v B

B

B

swelling swelling

isotropic compression
critical state

isotropic compression
critical state

v

v

Figure 9.2b Principle of the Modified Cam-Clay model; (a) the correspondence of the p-q
space and the v-p space for a softening stress path A-B-C, (b) the related v- ln p space, (c)
softening behaviour