Author: S. Fryer, M. Couchman and T. Eckhart (all BuroHappold Ltd)
2 July 2018
First published: 2 July 2018
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S. Fryer, M. Couchman and T. Eckhart (all BuroHappold Ltd)
The OLE is supported by gantries of various types and configurations. In the case of the Great Eastern, the gantries date from the electrification of UK railways in the 1940s.
Initial structural assessment carried out had shown that existing gantries on the route were inadequate to carry increased loading from the upgraded OLE. However, a rigorous procedure incorporating detailed non-linear structural analysis was developed that eliminated some of the inherent conservatism in traditional codified approaches. Particular benefit was found in the case of the many types of slender structure where buckling was a governing factor. Using non-linear techniques, it was possible to demonstrate that families of structures were suitable for incorporation in the Crossrail (Elizabeth line) scheme.
This paper describes the approach that was used. The project is remarkable for significant programme and cost savings that were accomplished using sophisticated engineering analysis. It is also noteworthy from a sustainability point of view, as it allowed the existing infrastructure to be reused.
All the articles from the July 2018 issue - a special issue on 'Structural engineering for the Elizabeth line'.
Congratulations to all the winners of the Institution’s People and Papers Awards 2018, which were presented at a luncheon held at Church House in Westminster, London on Thursday 7 June. The Awards recognise outstanding contributions to structural engineering and to Institution life, through innovative educational initiatives, papers published in The Structural Engineer and Structures , lectures, regional group activity, and much more. They cover the whole range of Institution life, from outstanding young professionals to those recognised for a lifetime of achievement and service.
The new Elizabeth line station at Custom House was a unique opportunity for design and construction. It is the only above-ground station on the central section of the line and will welcome millions of visitors to London’s largest conference centre, ExCeL, as well as providing vital connections for the Borough of Newham. A joint team from Crossrail Ltd, Atkins, Arup, Allies & Morrison, and Laing O'Rourke collaborated to develop the striking station design, creating a beacon for both the Elizabeth line and the local community. Faced with many constraints, a ‘kit of parts’ strategy was developed for Custom House’s construction, including prefabricated and standardised components. This approach – where much of the station was built off site – minimised workon site, drove down programme times and costs, and reduced the impact on the local community. The approach also led to Custom House’s excellent health and safety record – one of the best of any Elizabeth line station to date.