Bloodworth, Alan G. and Houlsby, Guy T. (2017) Analysis of pre-vault tunnelling interaction with buildings. Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 170 (2). pp. 99-116. doi:10.1680/jgeen.15.00176 ISSN 1353-2618.

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Abstract

This paper presents data from a case history of tunnelling using the pre-vaulting method, at low cover and without compensation grouting, beneath a terrace of masonry buildings at Ramsgate, Kent. Surface and building settlements were measured and movements on existing cracks monitored throughout construction. Volume loss was low and the settlement trough quite narrow. Buildings responded flexibly with lower damage level than predicted by assessment using a deep beam analogy. Damage was concentrated in opening of existing cracks, with the only significant new cracks likely to have their origin in three-dimensional effects as the tunnel heading approached the buildings. Assessment of tunnelling effects on buildings is important to confirm the viability of new tunnelling projects and reassure building owners of the possible level of damage, while avoiding excessive conservatism. Numerical modelling shows potential for such assessment, and a procedure for modelling the ground, tunnel and building together using non-linear three-dimensional finite-element analysis has been applied to this site. It was found that, although geometry and other features of the site required simplification due to practical limitations in computing resources, model results still reflected the main features of observed response including the ‘greenfield’ trough, flexible structure response and damage severity.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH):	Tunnels -- Design and construction -- Ramsgate (England), Terrace houses , Geotechnical engineering , Brickwork
Journal or Publication Title:	Proceedings of the Institution of Civil Engineers - Geotechnical Engineering
Publisher:	Thomas Telford
ISSN:	1353-2618
Official Date:	April 2017
Dates:	Date Event April 2017 Published 8 December 2016 Available 20 October 2016 Accepted
Volume:	170
Number:	2
Page Range:	pp. 99-116
DOI:	10.1680/jgeen.15.00176
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Date of first compliant deposit:	17 January 2017
Date of first compliant Open Access:	17 January 2017
Funder:	M.W. Kellogg Company, Great Britain. Royal Commission for the Exhibition of 1851

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