2 m Ysat 3 = 18 kN/m³ 3 m 2 m Undrained shear strength = 25 kPa Saturated clay 6 m Gravel Figures and equations 0.25 H 0.25 H * H σα 0.5 H Ja 0.75 H * 0.25 H Figure 10.5 Peck's (1969) apparent-pressure envelope for cuts in sand (a) σa = 0.65yHKa Figure 10.6 Peck's (1969) apparent-pressure envelope for cuts in soft to medium clay - Figure 10.7 Peck's (1969) apparent-pressure envelope for cuts in stiff clay > 4 → the larger of σ = YH [1 − (1º)] and σ = 0.3yH (b) YH (c) C ≤4 → σa = 0.2yH~0.4yH Use σa = 0.3yH if necessary Q1. Determine (a) The lateral earth pressure distribution for the braced cut analysis (including shape and value of earth pressure) (b) The strut loads for the horizontal supports of the braced cut. The lateral spacing, S, between the struts is 3 m. (c) The maximum bending moment of the sheet pile FS CNc (1+0.2) yH+q where B' = T if T ≤ B/√2, B' = B/√√2 if T > B/√√2, B" = √2B' 1 2H - Yeq = = = [YsHs + Yc (H - Hs)], Ceq = [YK¸H² tan ¢¸ + (H − H¸)n'qu] H H Yav = = = (Y₁₁ + Y₂H₂+.......+YnHn), Cav = ½-½ (C₁₂H₁ + €₂H₂+...+CnH₂) (B1+B2)s² As² Mmax , Mmax 8 8 Hint: Q1 Two supports imply statically determinate; therefore, the static equilibriums of force and moment can determine two unknown forces, PA and pв of a strut. B.M.D. plotted on the tension side h₁=0.25H h₂=0.75H Saturated clay 100 ба A B C H₁₂ H₂ H3 2 m PA 3 m PB 2 m T H Gravel 50 H_H Н 50 H+H3 A 0.5 B 1 Find the bending moment at each location (Point A and Point B) of the strut along the length of the sheet pile.
2 m Ysat 3 = 18 kN/m³ 3 m 2 m Undrained shear strength = 25 kPa Saturated clay 6 m Gravel Figures and equations 0.25 H 0.25 H * H σα 0.5 H Ja 0.75 H * 0.25 H Figure 10.5 Peck's (1969) apparent-pressure envelope for cuts in sand (a) σa = 0.65yHKa Figure 10.6 Peck's (1969) apparent-pressure envelope for cuts in soft to medium clay - Figure 10.7 Peck's (1969) apparent-pressure envelope for cuts in stiff clay > 4 → the larger of σ = YH [1 − (1º)] and σ = 0.3yH (b) YH (c) C ≤4 → σa = 0.2yH~0.4yH Use σa = 0.3yH if necessary Q1. Determine (a) The lateral earth pressure distribution for the braced cut analysis (including shape and value of earth pressure) (b) The strut loads for the horizontal supports of the braced cut. The lateral spacing, S, between the struts is 3 m. (c) The maximum bending moment of the sheet pile FS CNc (1+0.2) yH+q where B' = T if T ≤ B/√2, B' = B/√√2 if T > B/√√2, B" = √2B' 1 2H - Yeq = = = [YsHs + Yc (H - Hs)], Ceq = [YK¸H² tan ¢¸ + (H − H¸)n'qu] H H Yav = = = (Y₁₁ + Y₂H₂+.......+YnHn), Cav = ½-½ (C₁₂H₁ + €₂H₂+...+CnH₂) (B1+B2)s² As² Mmax , Mmax 8 8 Hint: Q1 Two supports imply statically determinate; therefore, the static equilibriums of force and moment can determine two unknown forces, PA and pв of a strut. B.M.D. plotted on the tension side h₁=0.25H h₂=0.75H Saturated clay 100 ба A B C H₁₂ H₂ H3 2 m PA 3 m PB 2 m T H Gravel 50 H_H Н 50 H+H3 A 0.5 B 1 Find the bending moment at each location (Point A and Point B) of the strut along the length of the sheet pile.
Principles of Foundation Engineering (MindTap Course List)
8th Edition
ISBN:9781305081550
Author:Braja M. Das
Publisher:Braja M. Das
Chapter2: Geotechnical Properties Of Soil
Section: Chapter Questions
Problem 2.27P
Related questions
Question
I need detailed help solving this exercise from homework of Foundation Engineering.
I do not really understand how to do, please do it step by step, not that long but clear. Thank you!
![2 m
Ysat
3
= 18 kN/m³
3 m
2 m
Undrained shear
strength
= 25 kPa
Saturated clay
6 m
Gravel
Figures and equations
0.25 H
0.25 H
*
H
σα
0.5 H
Ja
0.75 H
*
0.25 H
Figure 10.5 Peck's
(1969) apparent-pressure
envelope for cuts in sand
(a) σa = 0.65yHKa
Figure 10.6 Peck's (1969)
apparent-pressure envelope
for cuts in soft to medium clay
-
Figure 10.7 Peck's (1969)
apparent-pressure envelope
for cuts in stiff clay
> 4 → the larger of σ = YH [1 − (1º)] and σ = 0.3yH
(b)
YH
(c)
C
≤4 → σa = 0.2yH~0.4yH Use σa = 0.3yH if necessary
Q1. Determine
(a) The lateral earth pressure distribution for the braced
cut analysis (including shape and value of earth pressure)
(b) The strut loads for the horizontal supports of the
braced cut. The lateral spacing, S, between the struts is 3
m.
(c) The maximum bending moment of the sheet pile
FS
CNc (1+0.2)
yH+q
where B' = T if T ≤ B/√2, B' = B/√√2 if T > B/√√2, B" = √2B'
1
2H
-
Yeq = = = [YsHs + Yc (H - Hs)], Ceq = [YK¸H² tan ¢¸ + (H − H¸)n'qu]
H
H
Yav = = = (Y₁₁ + Y₂H₂+.......+YnHn), Cav = ½-½ (C₁₂H₁ + €₂H₂+...+CnH₂)
(B1+B2)s²
As²
Mmax
,
Mmax
8
8
Hint:
Q1
Two supports imply statically determinate; therefore, the static equilibriums of force and moment can determine two
unknown forces, PA and pв of a strut.
B.M.D. plotted on the tension side
h₁=0.25H
h₂=0.75H
Saturated clay
100
ба
A
B
C
H₁₂
H₂
H3
2 m PA 3 m
PB 2 m
T
H
Gravel
50
H_H
Н
50
H+H3
A 0.5
B
1
Find the bending moment at each location (Point A and Point B) of the strut along the length of the sheet pile.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F14edd9a8-fad3-4b3f-b234-2144164e926a%2F2b67a518-c298-42b3-aa0b-9fc971389e65%2Fhfbgx4l_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2 m
Ysat
3
= 18 kN/m³
3 m
2 m
Undrained shear
strength
= 25 kPa
Saturated clay
6 m
Gravel
Figures and equations
0.25 H
0.25 H
*
H
σα
0.5 H
Ja
0.75 H
*
0.25 H
Figure 10.5 Peck's
(1969) apparent-pressure
envelope for cuts in sand
(a) σa = 0.65yHKa
Figure 10.6 Peck's (1969)
apparent-pressure envelope
for cuts in soft to medium clay
-
Figure 10.7 Peck's (1969)
apparent-pressure envelope
for cuts in stiff clay
> 4 → the larger of σ = YH [1 − (1º)] and σ = 0.3yH
(b)
YH
(c)
C
≤4 → σa = 0.2yH~0.4yH Use σa = 0.3yH if necessary
Q1. Determine
(a) The lateral earth pressure distribution for the braced
cut analysis (including shape and value of earth pressure)
(b) The strut loads for the horizontal supports of the
braced cut. The lateral spacing, S, between the struts is 3
m.
(c) The maximum bending moment of the sheet pile
FS
CNc (1+0.2)
yH+q
where B' = T if T ≤ B/√2, B' = B/√√2 if T > B/√√2, B" = √2B'
1
2H
-
Yeq = = = [YsHs + Yc (H - Hs)], Ceq = [YK¸H² tan ¢¸ + (H − H¸)n'qu]
H
H
Yav = = = (Y₁₁ + Y₂H₂+.......+YnHn), Cav = ½-½ (C₁₂H₁ + €₂H₂+...+CnH₂)
(B1+B2)s²
As²
Mmax
,
Mmax
8
8
Hint:
Q1
Two supports imply statically determinate; therefore, the static equilibriums of force and moment can determine two
unknown forces, PA and pв of a strut.
B.M.D. plotted on the tension side
h₁=0.25H
h₂=0.75H
Saturated clay
100
ба
A
B
C
H₁₂
H₂
H3
2 m PA 3 m
PB 2 m
T
H
Gravel
50
H_H
Н
50
H+H3
A 0.5
B
1
Find the bending moment at each location (Point A and Point B) of the strut along the length of the sheet pile.
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