The effects of compensation grout shaft on the surrounding London clay soil, using finite element analysis

Burczak, Jozef (2013) The effects of compensation grout shaft on the surrounding London clay soil, using finite element analysis. BEng dissertation, University of Portsmouth.

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    Abstract

    The increased use of Compensation Grout shafts with the tunnelling industry has highlighted the importance of investigating the effects they have on the surrounding soil. in this research, finite element analyses are performed to simulate the behaviour of a circular compensation Grout Shaft constructed in London Clay. PLAXIS, a Finite Element Package, is used to model the 18.5 metre deep, 5 metre wide shaft, and view the soil displacement that it causes. A Cam Clay model is employed within the programme to reproduce the behaviour of London Clay. soil parameters obtained from both tests on London Clay borehole samples, and previous literature were used in the analysis. Surface displacement, horizontal soil displacement five metres from the shaft face and parameter sensitivity were analysed from the finite element model. Comparing the surface displacements to that measured on site, the accuracy and reliability of the model were verified, showing a close correlation in the results. although soil displacement occurs around the shaft, it would be too small to cause any damage to surrounding structures.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Technology > School of Civil Engineering and Surveying
    Depositing User: Jane Polwin
    Date Deposited: 13 Feb 2014 11:33
    Last Modified: 28 Jan 2015 12:33
    URI: http://eprints.port.ac.uk/id/eprint/14300

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