Homework Help is Here – Start Your Trial Now!
Engineering
Civil Engineering
A closed-end steel pipe pile is driven into thick saturated clay strata. The diameter and length of the pile are 0.4 m and 32 m, respectively. The saturated unit weight and undrained shear strength of the clay are given in the figure. Estimate the side resistance Qs with (a) a method (5%) and (b) λ method (5%), and estimate the tip resistance Qp. 5 m 8 m 24 m Ysat 18.2 kN/m³ Su = 80 kPa Y sat S₁ 3 = 18.7 kN/m = 110 kPa

A closed-end steel pipe pile is driven into thick saturated clay strata. The diameter and length of the pile are 0.4 m and 32 m, respectively. The saturated unit weight and undrained shear strength of the clay are given in the figure. Estimate the side resistance Qs with (a) a method (5%) and (b) λ method (5%), and estimate the tip resistance Qp. 5 m 8 m 24 m Ysat 18.2 kN/m³ Su = 80 kPa Y sat S₁ 3 = 18.7 kN/m = 110 kPa

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
100%

I need detailed explanation solving this problem from Foundation, please.

 

A closed-end steel pipe pile is driven into thick saturated clay strata. The diameter and length of the pile are 0.4 m and 32 m, respectively. The saturated unit weight and undrained shear strength of the clay are given in the figure. Estimate the side resistance Qs with (a) a method (5%) and (b) λ method (5%), and estimate the tip resistance Qp. 5 m YAV 8 m 24 m Ysat 18.2 kN/m³ Su = 80 kPa 3 sat 18.7 kN/m 110 kPa S U
Transcribed Image Text:A closed-end steel pipe pile is driven into thick saturated clay strata. The diameter and length of the pile are 0.4 m and 32 m, respectively. The saturated unit weight and undrained shear strength of the clay are given in the figure. Estimate the side resistance Qs with (a) a method (5%) and (b) λ method (5%), and estimate the tip resistance Qp. 5 m YAV 8 m 24 m Ysat 18.2 kN/m³ Su = 80 kPa 3 sat 18.7 kN/m 110 kPa S U
9net(u) = quq = 5.14c1+ (1+0.4²) General bearing capacity equation qu= c'NcFesFcaFci + q'NaFas FaaFai +0.5yBNyFysFya Fyi Shape factors by De Depth factors by Hansen (1970) Beer (1970) B No Fcs = 1+ N Fas = 1 + Fys 0 1 2 3 4 5 6 7 8 9 10 B = 10.4( Ne 5.14 5.38 5.63 5.90 6.19 6.49 6.81 7.16 7.53 7.92 8.35 tan o' 0.195B L TABLE 6.2 Bearing Capacity Factors From Eqs. (6.30), (6.29), and (6.31) N₁ Na 1.00 2.71 1.09 2.97 1.20 3.26 1.31 3.59 1.43 3.94 1.57 4.34 1.72 1.88 2.06 2.25 2.47 Ne 16.88 18.05 19.32 20.72 22.25 23.94 25.80 27.86 30.14 32.67 35.49 38.64 42.16 46.12 50.59 Fad = 1 + 2 tano (1 — sin y)²: qd B Fyd = 1 Fcd = 1 + 0.4( Ny 0.00 0.07 0.15 0.24 0.34 0.45 0.57 0.71 0.86 1.03 1.22 7.13 8.20 9.44 10.88 12.54 14.47 16.72 19.34 22.40 25.99 30.22 35.19 41.06 48.03 56.31 = 11 12 13 14 15 16 17 18 19 20 21 TABLE 6.2 Bearing Capacity Factors From Eqs. (6.30), (6.29), and (6.31) (Continued) φ' Na $' Na 22 7.82 42.92 23 8.66 48.93 24 9.60 55.96 25 10.66 64.20 26 11.85 73.90 27 13.20 85.38 28 14.72 99.02 29 16.44 115.31 30 18.40 134.88 31 20.63 158.51 32 23.18 187.21 33 26.09 222.31 34 29.44 265.51 35 33.30 319.07 36 37.75 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Ne 8.80 9.28 9.81 10.37 10.98 11.63 12.34 13.10 13.93 14.83 15.82 For saturated clay: p For a method: fav = acu For method: f = (₁ +2c₂) Ne 55.63 61.35 67.87 75.31 83.86 93.71 105.11 118.37 133.88 152.10 173.64 199.26 229.93 266.89 Apqp = ApCu Nc 4.77 5.26 5.80 6.40 7.07 Ny 1.44 1.69 1.97 2.29 2.65 3.06 3.53 4.07 4.68 5.39 6.20 (continued) Ny 66.19 78.03 92.25 109.41 130.22 155.55 186.54 224.64 271.76 330.35 403.67 496.01 613.16 762.89 Inclination factors by Meyerhof (1963) and Hanna and Meyerhof (1981) Fci = Fai = (1-2 Fyi = (1 - B² Bº Ne 9 for p = 0 TABLE 12.10 Variation of A with Pile Embedment Length, L Embedment length, L (m) 0 5 10 15 20 25 30 35 40 50 60 70 80 90 Coyle and Castello (1981): Embedment ratio, L/D 0 10 20 30 40 50 60 70 Qp = q'N₁ Ap 10 T T T T T e $' Bearing capacity factor, N 20 32° 36° = 30° 34° λ 0.5 0.336 0.245 0.200 0.173 0.150 0.136 0.132 0.127 0.118 0.113 0.110 0.110 0.110 38° TABLE 12.11 Variation of a (Interpo- lated Values Based on Terzaghi et al., 1996) 40° Cu Pa ≤0.1 0.2 0.3 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.4 2.8 40 60 80 100 200 Note: Pa ≈100 kN/m² Qs = atmospheric pressure Embedment ratio, L/D = : (Ko'tan 8')pL 0.15 0.2 0 5 10 15 20 25 30 a 35 36 1.00 0.92 0.82 0.74 0.62 0.54 0.48 0.42 0.40 0.38 0.36 0.35 0.34 0.34 Earth pressure coefficient, K 1.0 $' 30° 31° 32° 33° 8=0.80' 2 34° 35⁰ 36° 5
Transcribed Image Text:9net(u) = quq = 5.14c1+ (1+0.4²) General bearing capacity equation qu= c'NcFesFcaFci + q'NaFas FaaFai +0.5yBNyFysFya Fyi Shape factors by De Depth factors by Hansen (1970) Beer (1970) B No Fcs = 1+ N Fas = 1 + Fys 0 1 2 3 4 5 6 7 8 9 10 B = 10.4( Ne 5.14 5.38 5.63 5.90 6.19 6.49 6.81 7.16 7.53 7.92 8.35 tan o' 0.195B L TABLE 6.2 Bearing Capacity Factors From Eqs. (6.30), (6.29), and (6.31) N₁ Na 1.00 2.71 1.09 2.97 1.20 3.26 1.31 3.59 1.43 3.94 1.57 4.34 1.72 1.88 2.06 2.25 2.47 Ne 16.88 18.05 19.32 20.72 22.25 23.94 25.80 27.86 30.14 32.67 35.49 38.64 42.16 46.12 50.59 Fad = 1 + 2 tano (1 — sin y)²: qd B Fyd = 1 Fcd = 1 + 0.4( Ny 0.00 0.07 0.15 0.24 0.34 0.45 0.57 0.71 0.86 1.03 1.22 7.13 8.20 9.44 10.88 12.54 14.47 16.72 19.34 22.40 25.99 30.22 35.19 41.06 48.03 56.31 = 11 12 13 14 15 16 17 18 19 20 21 TABLE 6.2 Bearing Capacity Factors From Eqs. (6.30), (6.29), and (6.31) (Continued) φ' Na $' Na 22 7.82 42.92 23 8.66 48.93 24 9.60 55.96 25 10.66 64.20 26 11.85 73.90 27 13.20 85.38 28 14.72 99.02 29 16.44 115.31 30 18.40 134.88 31 20.63 158.51 32 23.18 187.21 33 26.09 222.31 34 29.44 265.51 35 33.30 319.07 36 37.75 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Ne 8.80 9.28 9.81 10.37 10.98 11.63 12.34 13.10 13.93 14.83 15.82 For saturated clay: p For a method: fav = acu For method: f = (₁ +2c₂) Ne 55.63 61.35 67.87 75.31 83.86 93.71 105.11 118.37 133.88 152.10 173.64 199.26 229.93 266.89 Apqp = ApCu Nc 4.77 5.26 5.80 6.40 7.07 Ny 1.44 1.69 1.97 2.29 2.65 3.06 3.53 4.07 4.68 5.39 6.20 (continued) Ny 66.19 78.03 92.25 109.41 130.22 155.55 186.54 224.64 271.76 330.35 403.67 496.01 613.16 762.89 Inclination factors by Meyerhof (1963) and Hanna and Meyerhof (1981) Fci = Fai = (1-2 Fyi = (1 - B² Bº Ne 9 for p = 0 TABLE 12.10 Variation of A with Pile Embedment Length, L Embedment length, L (m) 0 5 10 15 20 25 30 35 40 50 60 70 80 90 Coyle and Castello (1981): Embedment ratio, L/D 0 10 20 30 40 50 60 70 Qp = q'N₁ Ap 10 T T T T T e $' Bearing capacity factor, N 20 32° 36° = 30° 34° λ 0.5 0.336 0.245 0.200 0.173 0.150 0.136 0.132 0.127 0.118 0.113 0.110 0.110 0.110 38° TABLE 12.11 Variation of a (Interpo- lated Values Based on Terzaghi et al., 1996) 40° Cu Pa ≤0.1 0.2 0.3 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.4 2.8 40 60 80 100 200 Note: Pa ≈100 kN/m² Qs = atmospheric pressure Embedment ratio, L/D = : (Ko'tan 8')pL 0.15 0.2 0 5 10 15 20 25 30 a 35 36 1.00 0.92 0.82 0.74 0.62 0.54 0.48 0.42 0.40 0.38 0.36 0.35 0.34 0.34 Earth pressure coefficient, K 1.0 $' 30° 31° 32° 33° 8=0.80' 2 34° 35⁰ 36° 5
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 5 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Braced cuts
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Structural Analysis
Structural Analysis
Civil Engineering
ISBN:
9781337630931
Author:
KASSIMALI, Aslam.
Publisher:
Cengage,
Structural Analysis (10th Edition)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Sustainable Energy
Sustainable Energy
Civil Engineering
ISBN:
9781337551663
Author:
DUNLAP, Richard A.
Publisher:
Cengage,
Traffic and Highway Engineering
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS