Post on 10-Jul-2016
description
9.48 a
9.48b
Figure 9.48
Downward drag
Test loadings
Case number
1
2
3
4
5
6
7
Soil type
Fill, sand, and clay
Fill and silty clay
Fill and clay
Sand and silty clay
Silty clay
Silty clay
Sand fill, clay, and peat
Pile type
Pile cross section (mm)
Cast-in- place concrete
� = 530
Steel pipe
� =
300
Steel pipe
�
= 500
Steel pile
�
= 760
6 RC piles
300× 300
6 RC piles
300× 300
Precast concrete380
× 450
Length in contact with settling soil (m)
25
26
40
25
7-17
9-16
24
Installation method
Predriven casing
Enlarged tip and slurry
Enlarge tip and casing
Driving
Driving
Driving
Driving
Bitumen
20/30
80/100
80/10
60/70
60/70
80-100
43
coatingType (pen25° �)
RC-0 specialCoating cutback gradethickness(mm)
10 1.2 1.2 1.5 1.2 1.2 10