671017.pdf

0

5

10

15

20

25

00.511. 52

Slope inclination

z(

cm )

u(mm)

3D

3D

1.5: 1

1: 1

(a) 3Dfrom pile

0

5

10

15

20

25

00.511. 5

z(

cm )

u(mm)

7D

10.5D

Slope inclination

1.5: 1

1: 1

(b)푦=−7퐷, passing by slope shoulder

Figure 19: Influence of inclination of the slope by numerical analysis.D:pilediameter;u: horizontal displacement.

End- xed

Test

Test

End- xed

L=3D

L=3D

L-surface

W-surface

(a) Test,퐿=3퐷, pile end fixed

Pile

L-surface

W-surface

(b) Pile location changed

L-surface

W-surface

(c) Slope inclination changed to 1 : 1

Figure 20:W-surfacesandL-surfacesconsidering different factors.L: pile spacing;D:pilediameter.

this paper, may be suitable for most practical pile-reinforced
slopes.

7. Conclusions

The pile-reinforcement behavior of cohesive soil slope was
investigated using numerical analysis and centrifuge model
tests. The behavior and reinforcement mechanism of the
pile-reinforced slope were obtained by considering different
influence factors. The main conclusions are as follows.

(1) The piles arrested a landslide that occurred in an

unreinforced slope, thus, significantly increasing the

stability level of the slope.

(2) A numerical model was established and confirmed

to be effective in capturing primary behavior of the

pile-reinforced slope. Thus, a comprehensive under-

standing of stress-deformation response can be

achieved by combining the numerical and physical

simulations.