Building deformation caused by tunneling: centrifuge modeling

Stefan  Ritter; Giorgia   Giardina; Andrea Franza; Matthew   J. DeJong

doi:10.1061/(ASCE)GT.1943-5606.0002223

Building deformation caused by tunneling: centrifuge modeling

Stefan Ritter^*, Giorgia Giardina, Andrea Franza, Matthew J. DeJong

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

Abstract

This paper investigates the deformation of buildings due to tunneling-induced soil displacements. Centrifuge model tests of three-dimensionally (3D) printed building models subject to a plane-strain tunnel excavation in dense, dry sand are discussed. The small-scale structures replicate important building characteristics including brittle material properties similar to masonry, a realistic building layout, façade openings, strip footings, and a rough soil-structure interface. Digital images were captured during the experiments, enabling image-based measurements of the building response. Results demonstrate the essential role of the building-to-tunnel position and structural details (i.e., opening percentage and building length). The onset of building cracking and cracking patterns confirms the importance of the building-to-tunnel position and structural details. The tests illustrate that an increase in the façade opening area leads to increased shear deformations while longer buildings caused an increase in bending deflections. An evaluation of the widely accepted framework of treating a structure separately at either side of the greenfield inflection point shows that this procedure can underestimate building damage.

Originalsprog	Engelsk
Artikelnummer	04020017
Tidsskrift	Journal of Geotechnical and Geoenvironmental Engineering
Vol/bind	146
Nummer	5
ISSN	1090-0241
DOI	https://doi.org/10.1061/(ASCE)GT.1943-5606.0002223
Status	Udgivet - maj 2020
Udgivet eksternt	Ja

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10.1061/(ASCE)GT.1943-5606.0002223

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abstract = "This paper investigates the deformation of buildings due to tunneling-induced soil displacements. Centrifuge model tests of three-dimensionally (3D) printed building models subject to a plane-strain tunnel excavation in dense, dry sand are discussed. The small-scale structures replicate important building characteristics including brittle material properties similar to masonry, a realistic building layout, fa{\c c}ade openings, strip footings, and a rough soil-structure interface. Digital images were captured during the experiments, enabling image-based measurements of the building response. Results demonstrate the essential role of the building-to-tunnel position and structural details (i.e., opening percentage and building length). The onset of building cracking and cracking patterns confirms the importance of the building-to-tunnel position and structural details. The tests illustrate that an increase in the fa{\c c}ade opening area leads to increased shear deformations while longer buildings caused an increase in bending deflections. An evaluation of the widely accepted framework of treating a structure separately at either side of the greenfield inflection point shows that this procedure can underestimate building damage.",

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Building deformation caused by tunneling: centrifuge modeling

Abstract

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