Geoscience Reference
In-Depth Information
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−5
−10
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Experiment
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−5
−2.5
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60
70
Mean effective stress (kPa)
Shear strain (%)
(a) Measured
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5
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5.0
2.5
0.0
2.5
5.0
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20
40
60
80
Shear strain (%)
Mean effective stress (kPa)
(b) Computed by conventional model
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15
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5.0
2.5
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2.5
5.0
0
20
40
60
80
Shear strain (%)
Mean effective strain (kPa)
(c) Computed by modified model
Fig. 13.3. Stress-strain and stresspath for lateral normal strainconstrained
(Ozutsumi, 2003)
3.2. EFFECT OFRESIDUAL STRENGTH OF SOIL ON SEISMIC SETTLEMENTS
OFEMBANKMENTS
Manytypesofriverdikesandembankmentshavebeenanalyzedthroughthestrainspace
multipleshearmechanismmodelandmostlysuccessfulinreproducingthevaryingdegree
of crest settlements depending on the geotechnical condition of foundation (Ozutsumi
et al., 2002; Tobita et al., 2006a). However, recent experience in analysis of one par-
ticular type of river dike, the dike No.1 of the Shiribeshi-Toshibeshi river, Hokkaido,
