Civil Engineering Reference
In-Depth Information
100
M
p
/
nd
4
200
Restrained
(one hinge)
100
Restrained
(no hinge)
50
10
20
−
e
e
/
d
0
1
2
4
8
16
0.1
4
6
1
2
10
20
L
/
d
(a) Short (strong) piles
100
Restrained
(two hinges)
Factor
of 2
10
e
−
0
0
e
/
d
1
24 8 16
1
1
10
100
1000
M
p
/
nd
4
(b) Long (weak) piles
Figure 4.38
Design chart for laterally loaded piles in soil with resistance proportional to depth.
shown in Figure 4.38. For short piles, the curved dashed lines correspond to the failure
mechanism in Figure 4.36(b).
4.3.2 Limiting lateral pressures in cohesive soils
For piles in cohesive soil, the limiting pressure exerted on the front of the pile by the
wedge of soil near the ground surface may be taken as 2
c
u
, where
c
u
is the undrained
