CE 728 Geotechnical Earthquake Engineering
Department of Civil Engineering
Middle East Technical University, Ankara,Turkey
Assoc. Prof. Dr. K. Önder Çetin
ASSIGNMENT 8 Seismic Assessment of Retaining Structures
For the retaining wall shown in the figure given below:
Backfill slope 15 derece; surcharge 20 kN/m
Hint :
φ
′
+
′

=
sin
1
sin
1
A
K
;
′

′
+
=
sin
1
sin
1
P
K
;
A
v
A
A
K
c
K
P
⋅
⋅

′
⋅
=
2
σ
;
P
v
P
P
K
c
K
P
⋅
⋅
+
′
⋅
=
2
a)
Determine the active and passive pressures acting on the wall by using Rankine’s
theory and plot your results on a similar figure given below. Determine the total
resulting force (R) per meter length acting on the wall.
Assignment 8 : Seismic Assessment of Retaining Structures
4 m
2 m
Sand
γ
wet
=18 kN/m
3
c
′
= 10
φ′
=30
0
Sand
γ
sat
=19 kN/m
3
c
′
= 5 kN/m
2
φ′
=32
0
4 m
2 m
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Department of Civil Engineering
Middle East Technical University, Ankara,Turkey
Assoc. Prof. Dr. K. Önder Çetin
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 Fall '06
 Cetin
 Civil Engineering, East Technical University, Middle East Technical, Geotechnical Earthquake Engineering Middle East Technical University, Dr. K. Önder, Civil Engineering Assoc

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