Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598943
Title: Tunnelling in sands and the response of buildings
Author: Farrell, R. P.
Awarding Body: University of Cambridge
Current Institution: University of Cambridge
Date of Award: 2011
Availability of Full Text:
Full text unavailable from EThOS. Please contact the current institution’s library for further details.
Abstract:
This research investigates mechanisms associated with soil structure interaction when tunnelling beneath buildings, using both case study data and centrifuge modelling. Field observations of the soil structure interaction have been obtained from the response of two buildings to the construction of a 12m diameter tunnel with extensive jet grouting in fluvial deposits. Centrifuge modelling has been carried out on the 8m diameter beam centrifuge at the University of Cambridge. Buildings are modelled as aluminium, masonry and micro concrete beams on fine dry sand. By varying the building materials and geometry, the response of buildings with a range of stiffnesses is investigated. Observed mechanisms showed good agreement with those identified from the case study, demonstrating the benefits of centrifuge modelling. These results demonstrate that buildings can significantly modify and reduce the Greenfield ground distortions, in both the vertical and horizontal planes. Based on these observations a new empirical approach for quantifying the soil structure interaction is proposed. The centrifuge modelling and field data have, however, shown that settlements beneath rigidity responding buildings can be larger than Greenfield values. This arises from a redistribution of the building weight and may have implications for adjacent infrastructure.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.598943  DOI: Not available
Share: