671017.pdf

30

35

40

45

50

55

60

Hori

zont

al

st

ress

(kPa)

− 16 − 12 − 8 − 4 0

y(D)

W-surface

(a)푧=3.5cm

50

55

60

65

70

75

80

85

90

Hori

zont

al^

st

ress

(kPa)

− 16 − 12 − 8 − 4 0

y(D)

W-surface

(b)푧 = 16.5cm

Figure 11: Stress distribution on a horizontal line by numerical analysis.

0 20406080 20 40 60 80 0 20406080

0

5

10

15

20

25

0 20406080

Horizontal stress (kPa) Horizontal stress (kPa)

0

Horizontal stress (kPa) H orizontal stress (kPa)

(a)y =−10.5D (b)y =−7.5D (c)y =−4.5D (d)y =−2.5D

z(

cm )

L-surface

Figure 12: Stress distributions on different vertical sections at 50 g-level by numerical analysis.

Pile

Zone B

Zone C

Zone A

5D

2D

L-surface

W-surface

Figure 13: Division of zones with different features.D:pilediameter.