Civil Engineering Reference
In-Depth Information
9.2.2.1 Frames with Bay Length, L
b
, 10 Feet, and Column to Beam Stiffness
Ratio, S
c
/S
b
, of 1
The horizontal movements of the retaining wall portion of the five story RFERS
with a bay length of 10 feet and column to beam stiffness ratio of 1 are presented
in Fig. 9.38 and 9.39 for the initial backfill stage and the last expansion cycle
respectively.
The horizontal wall-deflections for all six frames are found to be comparable at
the end of both the initial backfill stage and the last expansion cycle, indicating
that the horizontal frame-movements at the wall are not significantly affected by
temperature changes. Nevertheless, the horizontal deflections of the frames are
significantly larger than would be practically acceptable for structures with
serviceability concerns.
50
40
U
hn1
U
hn3
U
hn6
U
hn10
U
hn15
U
hn20
30
L
b
= 10 ft
φ
20
= 30
o
10
S
c
/S
b
= 1
0
0
0.5
1
1.5
2
2.5
3
Horizontal Retaining Wall Movement, U
h
, ft
Fig. 9.38
Retaining Wall Movements at Backfill Stage (φ = 30º, All Bays, L
b
= 10 ft, S
c
/S
b
= 1)
50
40
U
hen1
U
hen3
U
hen6
U
hen10
U
hen15
U
hen20
30
L
b
= 10 ft
φ
20
= 30
o
10
S
c
/S
b
= 1
0
0
0.5
1
1.5
2
2.5
3
Horizontal Retaining Wall Movement, U
h
, ft
Fig. 9.39
Retaining Wall Movements at Expansion Cycle (φ = 30º, All Bays, L
b
=10 ft,
S
c
/S
b
= 1)
