Civil Engineering Reference
In-Depth Information
The lateral earth pressure developed at the end of expansion cycle is shown in
Fig. B.3. The earth pressure for each the of rigid frames is compared to the Cou-
lomb active earth pressure for a level backfill with a friction angle between the
wall and backfill soil of 22.5º (0.75
), and prescribed lateral earth pressure values
found in major building codes adopted in the United States presented in table 1.1
of Chapter 1.
φ
20
L
b
= 10 ft
φ
U
hn1
U
hn3
U
hn6
U
hn10
U
hn15
U
hn20
= 30
o
15
S
c
/S
b
= 1
10
5
0
0
0.05
0.1
0.15
0.2
Horizontal Retaining Wall Movement, U
h
, ft
Fig. B.1
Retaining Wall Movements at Backfill Stage (φ = 30º, All Bays, L
b
=10 ft,
S
c
/S
b
= 1)
20
L
b
= 10 ft
φ
U
hen1
U
hen3
U
hen6
U
hen10
U
hen15
U
hen20
= 30
o
15
S
c
/S
b
= 1
10
5
0
0
0.05
0.1
0.15
0.2
Horizontal Retaining Wall Movement, U
h
, ft
Fig. B.2
Retaining Wall Movements at Expansion Cycle (
φ
= 30º, All Bays, L
b
=10 ft,
S
c
/S
b
= 1)
