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Dynamic Compaction

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Dynamic Compaction

Dynamic compaction

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Dynamic Compaction

• The process primarily involves

dropping a heavy weight

repeatedly on the ground at

regular intervals.

• The weight of hammer used

varies from 5t to 40t

• Height of hammer drop varies

 between 7.5m to 30m.

• The stress waves generated by the

hammer drops helps in the

densification to a large depths

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Leonards et al. !"#0$ suggested that the significant

depth of influence for compaction is app.

 

%here

&' ( significant depth of compaction m$

%H  ( dropping weight tonne$h( height of drop m$

• 

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)oran and *odigue+ suggested a rational method for conducting

dynamic compaction for granular soils.

,cc. to this method- for hammer of width & having a weight %H

and a drop h- the app. hape of the densified area will be of the

type shown below

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Design chart

Note b = DI

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