Consolidation Real Soils nonlinear stress is not proportional to - - PDF document

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Consolidation Real Soils nonlinear stress is not proportional to - - PDF document

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Consolidation Real Soils nonlinear stress is not proportional to strain elastoplastic strain is not fully recovered upon unloading viscoelastic stress-strain response is time dependent nonconservative

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SLIDE 1

Consolidation

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SLIDE 2

Real Soils

  • nonlinear – stress is not proportional to strain
  • elastoplastic – strain is not fully recovered upon unloading
  • viscoelastic – stress-strain response is time dependent
  • nonconservative – stress-strain response is history dependent
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SLIDE 3

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.3a

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SLIDE 4

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.3b

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SLIDE 5

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Coefficient of volume change

∆ ∆′ Figure 8.4a

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SLIDE 6

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Constrained Modulus

∆′ ∆ M 1

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SLIDE 7

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Coefficient of compressibility

∆ ∆′ Figure 8.4b

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SLIDE 8

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.5a

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SLIDE 9

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.5b

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SLIDE 10

free water surface Effective stress Neutral stress Total stress ´ =  u = wd  = wd lake bed

d

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SLIDE 11

free water surface

z

Effective stress Neutral stress Total stress ´ = ´z u = w(z+d)  = satz + w(z+d) lake bed

d

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SLIDE 12

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

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SLIDE 13

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

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SLIDE 14

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

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SLIDE 15

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

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SLIDE 16

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.8

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SLIDE 17

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

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SLIDE 18

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

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SLIDE 19

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.6

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SLIDE 20

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

8 9 10 11 12 13

CL CL ML CH SP CH

Figure 8.9a

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SLIDE 21

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.15a

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SLIDE 22

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.9c

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SLIDE 23

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.9d

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SLIDE 24

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.9h

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SLIDE 25

(Holtz & Kovacs, An Introduction to Geotechnical Engineering, 1981)

Figure 8.9h