SHEET PILE STRUCTURES
Topic: General Types of Sheet Pile Lateral Pressure Diagram Cantilever Sheet Pile
CALCULATION STEPS CANTILEVER SHEET PILE - SAND
1. Determine the value of K a and K p 2. Calculate p 1 and p 2 with L 1 and L 2 are known 3. Calculate L 3 4. Calculate the resultant of the area ACDE (P) 5. Determine the z (the center of pressure for the area ACDE)
6. Calculate p 5 7. Calculate A 1, A 2, A 3, A 4
8. Determine L 4 9. Calculate p Calculate p Calculate L Draw the pressure distribution diagram 13. Obtain the theoretical depth ; D = L 3 + L 4 The actual depth of penetration is increased by about 20% - 30% 14. Calculate the maximum bending moment
EXAMPLE CANTILEVER SHEET PILE - SAND GWL d = 15.9 kN/m 3 t = kN/m 3 = 32 o c = 0 kPa L 1 = 2 m L 2 = 3 m D Determine the penetration depth (D) and dimension of sheet pile
EXAMPLE CANTILEVER SHEET PILE - SAND Step 1 (determine the value of k a and k p ) Step 2 (calculate p 1 and p 2 ) Step 3 (Calculate L 3 ) kPa m
Step 4 (calculate P) Step 5 (calculate z) Step 6 (calculate p 5 ) kN/m m kN/m 2
Step 7 (calculate A 1 – A 4 )
Step 8 (determine L 4 ) Step 9 (calculate p 4 ) Step 10 (calculate p 3 ) L 4 4.8 m kPa
Step 11 (Calculate L 5 ) Step 12 Draw the pressure distribution diagram Step 13 (the penetration dept of sheet pile) Theoretical = = 5.46 m Actual = 1.3 (L 3 +L 4 ) =7.1 m m
EXAMPLE CANTILEVER SHEET PILE - SAND
Dimension of Sheet Pile m kN.m