Environmental Engineering Reference
In-Depth Information
Position of the resultant, B
Position of the resultant, B
h = h*/l = 0,5. Figures 5a and 8 give λ = 0.185
and B ≈ 0,164.
The horizontal component of the force (e
h
) and
the momentum at the foot of the wall (M) are:
(
α
= 0;
ψ
= 0)
(
α
= 0;
ψ
= 4)
H
H
0,1 ,2
0,3
0,4
0,5
0,00
0,00
B/H
B/H
0,50
0,50
1,00
1,00
1
2
δ
= 10
2
δ
= 0
E
h
=H
*
Lb =
λ
92.5kN/m
1,50
1,50
δ
= 10
δ
= 0
2,00
2,00
( )
303.4kNm/m
M= E
h
B
*
L=
2,50
2,50
Adopted
parameters:
GSI = 25
m
0
= 15
Adopted
parameters:
GSI = 25
m
0
= 15
3,00
3,00
3,50
3,50
4,00
4,00
ReFeRences
serrano, a., olalla, c. & Perucho a. 2007. active and
passive earth pressures on retaining wall assuming a
non-linear strength criterion and constant dilatancy.
ISRM 11th International Congress on the Second Half
Century of Rock Mechanics
. lisbon, 9-13.
hill, R. (1950).
The mathematical theory of plasticity
.
clarendon Press. oxford.
Figure 8. Position of the resultant of the force.
h - (B/h) law, with the indicated parameters and for dif-
ferent hypotheses.
5.2
Example
Taking the case of a wall with: α = 0, δ = 0 and
h
*
= 10 m. adopting the h&B criterion with
ψ = 0, ζ = 0, β = 200 kn/m
2
, γ = 10 kn/m
3
, then:
l = β/γ = 20 m
