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Steel Designers' Manual - 6th Edition (2003)
embodies offshore practice where it states that the maximum dynamic stress in the
shaft during driving should be limited to be less than 90% of yield.
29.1.5 Worked examples
Insufficient space is available in this publication to provide comprehensive worked
examples for the design of steel bearing piles but they may be found in other publications
such as those listed below:
• SCI Publication P-250 Integral Steel Bridges – Design of a multi-span bridge-
Worked Example 23
• Eurocode 7: A Commentary. 24
29.2 Sheet piles
29.2.1 Uses
There are various types of earth-retaining structures. Where a differential surface
level is to be established with a vertical interface, a retaining wall is used. Steel sheet
piling is one form of retaining wall construction. Sheet piles resist soil and water
pressures by functioning as a beam spanning vertically between points of support,
as shown in Fig. 29.10.
Steel sheet piles are used for temporary and permanent retaining walls. In temporary
works and cofferdams the sheet piles enable deep excavations to be made
to facilitate construction below ground and water level of other permanent works.
On completion of construction the sheet piles are usually extracted for reuse on
other projects.
More recent applications have seen the use of sheet piles as permanent retaining
walls. Structures include basements, underground carparks and abutments for
bridges including integral bridges.
waling :: tie rod n ._-anchor
sheet
piles "..._. = possive soil
resistance
passive soil __
resistance ___________
= active soil
= pressure
Fig. 29.10 Sheet pile retaining wall
Sheet piles 885