For urban tunneling projects it is essential to predict and prevent building damage. Although various case studies and experiments have shown that buildings considerably modify greenfield soil movements, widely accepted damage assessment methods neglect this soil-structure interaction and simplify structures as linear elastic beams. This paper summarizes an experimental investigation of the response of more realistic structures to tunneling-induced deformations. Small scale structural models with facade openings and brittle material properties were 3D printed and tested in a geotechnical centrifuge. Soil and structure displacement data were obtained by image-based measurement. Results demonstrate that structures notably mitigate differential greenfield ground displacements. It is also shown that maximum soil settlements, horizontal soil displacements beneath the structure and structural damage in the form of cracking significantly depend on the position of the structure in the settlement profile. The results provide a basis from which to predict building settlement response with greater certainty.
|Number of pages
|Published - 2016
|ITA-AITES World Tunnel Congress 2016, (WTC 2016) - San Francisco, USA United States
Duration: 22 Apr 2016 → 28 Apr 2018
|ITA-AITES World Tunnel Congress 2016, (WTC 2016)
|USA United States
|22/04/16 → 28/04/18