Design the anchored sheet pile wall supporting a loose sand fill as shown in the following Figure. GWT is at the same height on both sides, and assume yw=10kN/m³. Based on the log spiral solutions, the Ka for the loose sand is 0.3 while the K₂ and Kp for the dense sand are 0.2 and 13.125, respectively. Using the fixed earth support method, do the following: a) For a factor of safety of 2 on the passive resistance, determine the requirea depth of penetration depth, D. (initial trial with D'=1.5m) b) Determine the bending moment and the anchor load. c) Select a sheet pile section from the Table 9.1 (E-210x10³ MN/m² and fa-210 MN/m²) KI D 7.0m. Yt = 16.5 kN/m³ $' = 30° Z Loose sand fill: Y = 19.5 kN/m3 $' = 30° Dense sand: Yt = 21 kN/m³ $' = 40° q=10 1.5m. 0.5m. kN/m²
Design the anchored sheet pile wall supporting a loose sand fill as shown in the following Figure. GWT is at the same height on both sides, and assume yw=10kN/m³. Based on the log spiral solutions, the Ka for the loose sand is 0.3 while the K₂ and Kp for the dense sand are 0.2 and 13.125, respectively. Using the fixed earth support method, do the following: a) For a factor of safety of 2 on the passive resistance, determine the requirea depth of penetration depth, D. (initial trial with D'=1.5m) b) Determine the bending moment and the anchor load. c) Select a sheet pile section from the Table 9.1 (E-210x10³ MN/m² and fa-210 MN/m²) KI D 7.0m. Yt = 16.5 kN/m³ $' = 30° Z Loose sand fill: Y = 19.5 kN/m3 $' = 30° Dense sand: Yt = 21 kN/m³ $' = 40° q=10 1.5m. 0.5m. kN/m²
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Design the anchored sheet pile wall supporting a loose sand fill as shown in the
following Figure. GWT is at the same height on both sides, and assume yw=10kN/m³.
Based on the log spiral solutions, the Ka for the loose sand is 0.3 while the K₂ and Kp
for the dense sand are 0.2 and 13.125, respectively. Using the fixed earth support
method, do the following:
a) For a factor of safety of 2 on the passive resistance, determine the requirea depth of
penetration depth, D. (initial trial with D'=1.5m)
b) Determine the bending moment and the anchor load.
c) Select a sheet pile section from the Table 9.1 (E-210x10³ MN/m² and fa-210 MN/m²)
D
O
7.0m.
Yt = 16.5 kN/m³
$' = 30°
Z
Loose sand fill:
Yt 19.5 kN/m3
$' = 30°
Dense sand:
Yt = 21 kN/m³
$' = 40°
q=10
1.5m.
0.5m.
kN/m²
Transcribed Image Text:Table 9.1 Properties of Some Sheet Pile Sections Produced by Bethlehem Steel Corporation
Section modulus
m³/m
in³/ft
of wall of wall
326.4 x 10-5 60.7
Section
designation Sketch of section
PZ-40
O
PZ-35
PZ-27
PZ-22
PSA-31
PSA-23
409 mm
(16.1 in.)
O
379 mm
(14.0 in.)
O
304.8 mm
(12 in.)
J
228.6 mm
(9 in.)
12.7 mm (0.5 in.)
Driving distance = 500 mm (19.69 in.)
15.2 mm (0.6 in.)
12.7 mm (in.)
12.7 mm (0.5 in.)
Driving distance = 575 mm (22.64 in.)
15.2 mm (0.6 in.)
9.53 mm (in.)
9.53 mm
Driving distance = 457.2 mm (18 in.)
00/00
2
9.53 mm (in.)
3
9.53 mm (in.)
i
-Driving distance = 500 mm (19.7 in.)
9.53 mm
Driving distance 558.8 mm (22 in.)
Driving distance = 406.4 mm (16 in.)
(in.)
260.5 x 10-5 48.5
97 x 10-5
162.3 × 10-5 30.2 251.5 x 10-6 184.2
10.8 x 10-5
12.8 x 10-5
Moment of inertia
m²/m in*/ft
of wall of wall
670.5 x 10-6 490.8
18.1
493.4 x 10-6 361.2
115.2 x 10-6 84.4
2.01 4.41 x 10-6 3.23
2.4 5.63 x 10-6 4.13
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Step 1: Introduction
VIEWStep 2: Calculation of stress
VIEWStep 3: Stress diagram
VIEWStep 4: Calculation of distance from P to E
VIEWStep 5: Calculation of penetration depth
VIEWStep 6: Bending Moment and Anchor Load
VIEWStep 7: Selection of sheet pile section
VIEWStep 8: Selection of sheet pile section
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