WESTMINSTER STATION, LONDON - DEEP EXCAVATION BELOW AN OPERATIONAL RAILWAY; CONSTRUCTING THE NEW JUBILEE LINE STATION INTERCHANGE HALL

Construction of the deep interchange hall at Westminster Station for the new Jubilee Line Extension presented a demanding engineering challenge, not least due to its position directly below an operational, high-level underground station in Central London. The new hall required the original station to be underpinned and supported on deep foundations in order to span 30 m {98 ft) obliquely across the new structure. An extensive top-down underpinning technique was employed: a segmental reinforced concrete slab beneath the existing station was supported by two longitudinal underpinning beams; bearing on 39 m {127 ft) deep diaphragm wall panels and massive 55 m (188 ft) deep, 3 m (9.8 ft) and (5.9 ft) diameter piles. With the existing station fully supported, the new hall was excavated top-down.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9058090477
• Corporate Authors:

  AA Balkema

  P.O. Box 1675
  Rotterdam,   Netherlands  BR-3000
• Authors:
  • Stones, C S
  • Crawley, J D
• Conference:
  • Twelfth European Conference on Soil Mechanics and Geotechnical Engineering (Proceedings)
  • Location: Amsterdam, Netherlands
  • Date: 1999-6-7 to 1999-6-10
• Publication Date: 1999

Language

• English

Media Info

• Features: Figures; References;
• Pagination: 12p

Subject/Index Terms

• TRT Terms: Beams; Diaphragm walls; Excavations; Foundations; Geotechnical engineering; Monitoring; Reinforced concrete; Support piles
• Geographic Terms: London (England)
• Subject Areas: Geotechnology; Highways; Railroads;

Filing Info

• Accession Number: 00782158
• Record Type: Publication
• ISBN: 9058090477
• Report/Paper Numbers: Volume 3
• Files: TRIS
• Created Date: Jan 17 2000 12:00AM