S - Kam Ng PhD Dissertation Final.pdf - Digital Repository of CCEE ...

Shaft Dampinf Factor, J s (s/m)Shaft Quake Value, q s (mm)Smith's Quake Value, qS (mm)2871210ISU6 (EOD)ISU9 (EOD)Smith (1962) & Hannigan et al. (1998)86q s = -5.261ln(N) + 17.943R² = 0.79994200 2 4 6 8 10 12 14 16 18 20 22 24 26SPT N-valueFigure 7.21: Relationship between quake value and SPT N-value for cohesionless soils10.90.80.70.60.50.40.30.20.10Within 3 m from Ground SurfaceMid Depth Between 6 to 9 mWithin 3 m from Pile ToeR 2 = 0.66(Near Pile Toe)0 4 8 12 16 20 24SPT N-valueR 2 = 0.38(Mid Depth)R 2 = 0.35(Near Surface)(a) J s versus SPT N-value(b) q s versus SPT N-valueFigure 7.22: Effect of pile installation on the correlation studies of (a) damping factor; and(b) quake value at three designated locations along the test pile876543210Within 3 m from Ground SurfaceMid Depth Between 6 to 9 mWithin 3 m from Pile Toe0 4 8 12 16 20 24SPT N-valueR 2 = 0.05(Near Surface)R 2 = 0.72(Mid Depth)R 2 = 0.82(Near Pile Toe)