EMBANKMENT STABILISATION WORKS BETWEEN RAYNERS LANE AND SOUTH HARROW UNDERGROUND STATIONS
1999; Ascential; Volume: 32; Issue: 10 Linguagem: Inglês
ISSN
0017-4653
Autores Tópico(s)Geotechnical Engineering and Soil Stabilization
ResumoThis paper, the Cooling Prize winner for 1999, discusses the stabilisation of the embankment between Rayners Lane and South Harrow stations on the Piccadilly Line of London Underground Limited (LUL). The stabilisation formed part of the LUL Earth Structures Project (ESP), which was established in 1982 to inspect, investigate, assess, design, and implement stabilisation works at locations where deformation of earth structures was decreasing track and ride quality and resulting in speed restrictions and service delays. The embankment supports both sides of the railway track for a distance of 200m, and rises up to 9m height. It is designed to ensure a smooth transition with the South Harrow viaduct. Kvaerner Construction Foundations was awarded the contract for designing and constructing the stabilisation works in January 1998, after the ESP had investigated and assessed the embankment's slope stability. The embankment had many mature trees. The paper describes the specialist ground engineering works, consisting of a retaining wall where the embankment was over about 6m high, and a new earth structure elsewhere. To demonstrate the stabilisation efficiency, several monitoring instruments were installed. The paper comments on the embankment's behaviour after a year of post-construction monitoring.
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