JUBILEE LINE EXTENSION PROJECT: MANAGEMENT AND MONITORING OF A 19TH CENTURY RAIL VIADUCT OVERLYING WORKS EXCAVATIONS

This paper describes the management and monitoring of a railway viaduct in London, UK, during construction of an underground railway link beneath the viaduct. Significant settlement was predicted to occur as a result of the excavation works, and compensation grouting was introduced to reduce distortions and prevent damage. Pre-contract investigations included a desk study; a condition survey and site measurements; load assessment of the structure as built, in its present condition, and for effects of settlement; monitoring the scheme development; considering excessive settlements; and a temporary propping scheme. Monitoring combined vibrating wire strain gauges and an electrolevel system, to monitor for changes in stresses and settlement. As a complementary system, mechanical strain gauges were provided. Results were reviewed frequently and trigger values determined to warn of change of stress. After completion of tunnelling works, further condition surveys will be undertaken. For the covering abstract see ITRD E111699.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0947644320
• Corporate Authors:

  ENGINEERING TECHNICS PRESS

  46 CLUNY GARDENS
  EDINBURGH,   United Kingdom  EH10 6BN
• Authors:
  • MURRAY, K A
  • MENKITI, C O
  • Jones, I S
  • SWANTON, P J
  • FLEISCHER, C C
• Conference:
  • PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON STRUCTURAL FAULTS AND REPAIR, 8 JULY 1997. VOLUME 3: EXTENDING THE LIFE OF BUILDINGS AND CIVIL STRUCTURES
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: p. 19-29
• Serial:
  • Volume: 3

Subject/Index Terms

• TRT Terms: Conferences; Construction; Continuous structures; Ground settlement; Loss and damage; Strain gages; Surveillance; Tunnels; Viaducts
• Uncontrolled Terms: Site investigation
• ITRD Terms: 3455: Bridge; 8525: Conference; 3655: Construction; 9006: Continuous; 1614: Damage; 5792: Settlement; 5722: Site investigation; 5562: Strain gauge; 9101: Surveillance; 3374: Tunnel
• Subject Areas: Bridges and other structures; Construction;

Filing Info

• Accession Number: 00922459
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-947644-32-0
• Files: ITRD
• Created Date: Apr 2 2002 12:00AM