> Navid Fathi Afshar wrote:
> I want to know wich of these have more deflection and why?
> 1)single pile lateral loaded by 10 tons force
> 2)pile groups for example for piles with cap that each one is lateral loaded
> by 10 tons (in add it becomes 4*10=40 tons to group)
It rather depends on the nature of the pile cap.
If the pile cap is simply resting on the piles there will be no transfer of
bending moment
In this case, the group would deflect more, because of the interaction between
the piles through the soil.
However, if the cap is considered rigidly bonded to the piles, then I would
expect the individual case to deflect more since here each pile is acting as a
cantilever. In the group, some piles carry tension, the others compression.
i.e. a much higher 'I' value.
(however note that in this case if the piles are end-bearing rather than
frictional, there may be a problem with pull-out in extreme cases)
Tell me, is this question a first, second or third year soil mechanics student
assignment ?
Yours,
Daniel
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Dr. Daniel Kidger | E: [log in to unmask]
High Performance Computing Group | W: www.csar.cfs.ac.uk
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