An evaluation of the effect of skew on integral bridges by computer based grillage analysis

Channell, Thomas (2014) An evaluation of the effect of skew on integral bridges by computer based grillage analysis. MEng dissertation, University of Portsmouth.

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    Abstract

    The constant drive to save money within the construction industry has recently highlighted many flaws in maintaining bridge bearings. Due to this, integral bridges have become a necessity for short to medium span bridges in order to save on longer term costs. This project was set out to evaluate the limitations of designing integral bridges through a computer modelling analysis and comparing the findings to skews set out by UK Design Guidelines.
    Models are created in MIDAS Civil 3D, with varying skews and soil conditions, in order to evaluate the reasoning behind the limits set out by BA 42/96 and PD 6694-1. The findings suggest that a critical angle is between 20° and 23° and that the tension in the abutment acute corner, moves upwards from the base of the wall after around 30°. Due to the latter, the limit is deemed fair as complications will arise within the design, however the limits strict adherence within the industry should be made more flexible as integral construction allows opportunities to save on vast amounts of maintenance costs.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Technology > School of Civil Engineering and Surveying
    Depositing User: Beth Atkins
    Date Deposited: 16 Jan 2015 15:01
    Last Modified: 28 Jan 2015 12:47
    URI: http://eprints.port.ac.uk/id/eprint/16441

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