Soil-structure interaction of shallow foundations under dynamic conditions using transparent soil

Wilkins, James Philip (2016) Soil-structure interaction of shallow foundations under dynamic conditions using transparent soil. MEng dissertation, University of Portsmouth.

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    This dissertation assesses the extent to which transparent soils can be used to analyse dynamic soilstructure interaction (SSI) with shallow foundations with a view to replicating what takes place in the real world (so in normal soil). To do this, it was considered appropriate to compare findings from the experimental procedures on granular transparent soil to findings from the same procedures using sand as the medium of SSI behaviour. The ground model created therefore consisted of 3mm granular transparent soil in the one case and 0.5mm sand in the other. A clay brick was used to simulate loading that would be applied by a raft or pad foundation in the prototype scenario and this was placed in the model, in the middle of the test chamber, and at 0mm and 30mm depths of embedment. Accelerometer data and photographic evidence were collected in order that analysis of SSI could take place. It was found that the free-field motion of soil particles was not effected by embedment depth in either the sand or transparent soil showing some common mechanical behaviour between the two soil types. Settlement and rotational movements were more pronounced in the transparent soil model however, but further study would be required in order to rule out the potential that it was the difference in grain size (between transparent soil and sand) that lead to these findings and not simply their inherent mechanical properties. It should also be noted that, in the absence of a structural model, this study was only capable of analysing kinematic SSI behaviour and not inertial SSI.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Technology > School of Civil Engineering and Surveying
    Depositing User: Beth Atkins
    Date Deposited: 01 Sep 2016 09:29
    Last Modified: 01 Sep 2016 09:29

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