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Title: Building response to tunnelling-induced ground subsidence : some case histories from the Jubilee Line extension
Author: Taylor, Graham Robert
ISNI:       0000 0004 2737 5574
Awarding Body: Imperial College London
Current Institution: Imperial College London
Date of Award: 2007
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Tunnelling-induced ground subsidence, particularly at station locations and complex junctions can distort and damage overlying buildings and infrastructure. The mechanisms, which control this soil-structure interaction problem, are not well understood. The imposition of ground treatment processes further complicates matters. There are few published case histories of building response to serve as precedent for future works. The integration of construction activities with building response is fundamental to furthering the understanding of this complex problem. The construction of the JLE in London provided an opportunity to monitor in detail, the response of structures to tunnelling-induced ground subsidence. The objective of this thesis was to compile comprehensive case histories for a number of buildings above London Bridge underground station on the JLE to further the understanding of the mechanisms involved. This has been achieved by collating all available archival data for each building and then assimilating the corresponding time-line, relating the response of the building to the various tunnelling and ground treatment phases. Particular emphasis was given to the initiation and propagation of cracks, the three-dimensional building response and the horizontal strains generated by the passage of the subsidence trough through the building footprint. The results of these studies are several fully-documented, analysed and interpreted case histories, which illustrate the response of a number of buildings of varying age, nature, foundation type and configuration to complex large-scale, underground construction and associated ground treatment processes. Surface settlement development above London Bridge underground station is largely as expected given the construction sequencing and application of protective measures, as is its distribution. However, the influence of geological features on the settlement recorded is highlighted. The recorded settlements during underground construction vary up to about 75 mm in magnitude.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available