Pile Design and Construction Practice, Fifth edition

Figure 11.16Testing rig for uplift on H-section pile using ground reaction.

Bracket welded

Load cell to test pile

Hydraulic jack

Angle bracing Universal beams

Stiffeners

Timber crib

Dial gauge

Dial gauge Supports

Test pile

(Min 2 m)

3 B B

Figure 11.15Uplift load on test pile (ML test) (a) Load/uplift curve (b) Time/uplift curve.

25(a)

Uplift of pile head in mm

Uplift load on pile head in MN

Uplift of pile head in mm

20

15

10

5

0

25(b)

20

15

10

5

(^012345678)
0
0
0.3
0.6
1.0
1.3
1.6
1.85
0
Total elapsed time in hours
0.5 1.0 1.5 2.0
0.8
Figures denote
increment of load
on pile