The effect of surface structures on soil deformations due to tunnelling in sand

Stefan Ritter, Matthew J. DeJong, Giorgia Giardina, Robert J. Mair

Research output: Contribution to journalArticle

Abstract

In urban tunnelling projects, surface buildings interact with tunnelling-induced ground movements. Understanding this interaction aids when predicting the behaviour of buildings above tunnelling works. However, much uncertainty still exists about the impact of structures on tunnelling subsidence and thus current design practice is widely based on empirical methods that neglect this soil-structure interaction. To refine current modelling assumptions and reduce uncertainty, more detailed knowledge of the influence of buildings on tunnelling-induced ground displacements is needed. This paper presents results from an experimental investigation that seeks to provide a more thorough understanding of this soil-structure interaction problem using more realistic surface structures. In particular, it focuses on the effect of surface structures on the ground surface and subsurface soil displacements. Three centrifuge tests with building models placed in different regions of the tunnelling-induced settlement trough were compared to a greenfield case. The ground model consisted of a dense, dry sand and the building was 3D printed. Results showed how the structure alters the vertical and horizontal soil displacements associated with tunnel excavation. Soil deformation mechanisms were notably influenced by the position of the building model relative to the tunnel, causing different magnitudes of vertical and horizontal ground movements above and next to the tunnel, widening of the surface and subsurface settlement troughs and localised failure beneath building corners.
Original languageEnglish
Pages (from-to)7-21
JournalRivista Italiana di Geotecnica
Volume51
Issue number4
DOIs
Publication statusPublished - 1 May 2017

Fingerprint

Surface structure
Tunnels
Soil structure interactions
Sand
Soils
sand
ground movement
tunnel
soil-structure interaction
soil
Subsidence
Centrifuges
Excavation
trough
deformation mechanism
centrifuge
effect
excavation
subsidence
Uncertainty

Cite this

The effect of surface structures on soil deformations due to tunnelling in sand. / Ritter, Stefan; DeJong, Matthew J.; Giardina, Giorgia; Mair, Robert J.

In: Rivista Italiana di Geotecnica, Vol. 51, No. 4, 01.05.2017, p. 7-21.

Research output: Contribution to journalArticle

Ritter, Stefan ; DeJong, Matthew J. ; Giardina, Giorgia ; Mair, Robert J. / The effect of surface structures on soil deformations due to tunnelling in sand. In: Rivista Italiana di Geotecnica. 2017 ; Vol. 51, No. 4. pp. 7-21.
@article{5a796cfa654648f18c143c2b5c1ebf00,
title = "The effect of surface structures on soil deformations due to tunnelling in sand",
abstract = "In urban tunnelling projects, surface buildings interact with tunnelling-induced ground movements. Understanding this interaction aids when predicting the behaviour of buildings above tunnelling works. However, much uncertainty still exists about the impact of structures on tunnelling subsidence and thus current design practice is widely based on empirical methods that neglect this soil-structure interaction. To refine current modelling assumptions and reduce uncertainty, more detailed knowledge of the influence of buildings on tunnelling-induced ground displacements is needed. This paper presents results from an experimental investigation that seeks to provide a more thorough understanding of this soil-structure interaction problem using more realistic surface structures. In particular, it focuses on the effect of surface structures on the ground surface and subsurface soil displacements. Three centrifuge tests with building models placed in different regions of the tunnelling-induced settlement trough were compared to a greenfield case. The ground model consisted of a dense, dry sand and the building was 3D printed. Results showed how the structure alters the vertical and horizontal soil displacements associated with tunnel excavation. Soil deformation mechanisms were notably influenced by the position of the building model relative to the tunnel, causing different magnitudes of vertical and horizontal ground movements above and next to the tunnel, widening of the surface and subsurface settlement troughs and localised failure beneath building corners.",
author = "Stefan Ritter and DeJong, {Matthew J.} and Giorgia Giardina and Mair, {Robert J.}",
year = "2017",
month = "5",
day = "1",
doi = "10.19199/2017.4.0557-1405.07",
language = "English",
volume = "51",
pages = "7--21",
journal = "Rivista Italiana di Geotecnica",
issn = "0557-1405",
publisher = "Edizioni Scientifiche Italiane",
number = "4",

}

TY - JOUR

T1 - The effect of surface structures on soil deformations due to tunnelling in sand

AU - Ritter, Stefan

AU - DeJong, Matthew J.

AU - Giardina, Giorgia

AU - Mair, Robert J.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - In urban tunnelling projects, surface buildings interact with tunnelling-induced ground movements. Understanding this interaction aids when predicting the behaviour of buildings above tunnelling works. However, much uncertainty still exists about the impact of structures on tunnelling subsidence and thus current design practice is widely based on empirical methods that neglect this soil-structure interaction. To refine current modelling assumptions and reduce uncertainty, more detailed knowledge of the influence of buildings on tunnelling-induced ground displacements is needed. This paper presents results from an experimental investigation that seeks to provide a more thorough understanding of this soil-structure interaction problem using more realistic surface structures. In particular, it focuses on the effect of surface structures on the ground surface and subsurface soil displacements. Three centrifuge tests with building models placed in different regions of the tunnelling-induced settlement trough were compared to a greenfield case. The ground model consisted of a dense, dry sand and the building was 3D printed. Results showed how the structure alters the vertical and horizontal soil displacements associated with tunnel excavation. Soil deformation mechanisms were notably influenced by the position of the building model relative to the tunnel, causing different magnitudes of vertical and horizontal ground movements above and next to the tunnel, widening of the surface and subsurface settlement troughs and localised failure beneath building corners.

AB - In urban tunnelling projects, surface buildings interact with tunnelling-induced ground movements. Understanding this interaction aids when predicting the behaviour of buildings above tunnelling works. However, much uncertainty still exists about the impact of structures on tunnelling subsidence and thus current design practice is widely based on empirical methods that neglect this soil-structure interaction. To refine current modelling assumptions and reduce uncertainty, more detailed knowledge of the influence of buildings on tunnelling-induced ground displacements is needed. This paper presents results from an experimental investigation that seeks to provide a more thorough understanding of this soil-structure interaction problem using more realistic surface structures. In particular, it focuses on the effect of surface structures on the ground surface and subsurface soil displacements. Three centrifuge tests with building models placed in different regions of the tunnelling-induced settlement trough were compared to a greenfield case. The ground model consisted of a dense, dry sand and the building was 3D printed. Results showed how the structure alters the vertical and horizontal soil displacements associated with tunnel excavation. Soil deformation mechanisms were notably influenced by the position of the building model relative to the tunnel, causing different magnitudes of vertical and horizontal ground movements above and next to the tunnel, widening of the surface and subsurface settlement troughs and localised failure beneath building corners.

U2 - 10.19199/2017.4.0557-1405.07

DO - 10.19199/2017.4.0557-1405.07

M3 - Article

VL - 51

SP - 7

EP - 21

JO - Rivista Italiana di Geotecnica

JF - Rivista Italiana di Geotecnica

SN - 0557-1405

IS - 4

ER -