The impact of accelerogram selection on physical scaled dynamic experiments using synthetic transparent soil

Giannakou, Anastasios (2015) The impact of accelerogram selection on physical scaled dynamic experiments using synthetic transparent soil. BEng dissertation, University of Portsmouth.

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    Abstract

    Real scaled and response spectrum compatible artificial accelerograms, also known as acceleration time histories, were generated to investigate their suitability on physical scaled dynamic experiments using synthetic transparent soil. At the present stage, the availability of background information for the synthetic transparent soil is limited and consequently various assumptions regarding earthquake parameters were made in order to define which of the two types of accelerograms would be appropriate to utilise during the physical scaled dynamic experiments. Furthermore, despite the fact that most researchers utilise real scaled accelerograms as an input of seismic force in dynamic studies, for the case of the synthetic transparent soil, response spectrum compatible artificial accelerograms were determined to be the most appropriate acceleration time histories.
    The generation of a number of realistic strong ground motions, nine accelerograms in total were created utilising earthquake simulation software such as SeismoArtif, SeismoMatch, SeismoSignal and SIMQKE_GR software. This enabled the detailed examination of differences observed between both types of accelerograms. Subsequently a selection of the most appropriate accelerogram according to Eurocode 8 provisions and requirements could be made.
    Thereafter, dynamic experiments were performed using a scaled single degree of freedom system and the synthetic transparent soil samples were prepared according to realistic conditions. Furthermore, the appropriate selection of accelerogram would represent a realistic strong ground motion which allowed the development of inertial and elastic forces within the soil. Finally, as the soil experienced a dynamic failure, the behavioural and mechanical properties were could be determined.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Technology > School of Civil Engineering and Surveying
    Depositing User: Jane Polwin
    Date Deposited: 19 Aug 2015 16:11
    Last Modified: 19 Aug 2015 16:11
    URI: http://eprints.port.ac.uk/id/eprint/18026

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