Shaking table testing of groin vaults made by 3D printers

Stefano Silvestri, Simonetta Baraccani*, Dora Foti, Salvador Ivorra, Dimitris Theodossopoulos, Vitantonio Vacca, Jacqueline Ochoa Roman, Luca Cavallini, Elnaz Mokhtari, Rory E White, Matthew Dietz, George Mylonakis

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

A novel experimental study of the seismic response of a 2 m x 2 m in plan - 0.7 m in height groin vault model, involving 266 tests conducted on the shaking table of EQUALS laboratory, University of Bristol, UK, is reported. The experimental rig consists of blocks formed by a 3D-printed plastic skin to provide stiffness and strength, filled with mortar. Dry joints between the voussoirs are formed for ease of testing and vault reconstruction. No investigations of this kind and size have been attempted in the past. Two support boundary conditions involving four lateral confinement modes, leading to various vault configurations, were tested. White-noise, sinusoidal and earthquake motions were imposed in one horizontal direction, with progressively increasing amplitude and different frequencies, up to collapse. The model exhibited a strongly non-linear behaviour, with decreasing fundamental frequency and increasing damping with increasing table acceleration. Failure mechanisms and collapse accelerations were found to mainly depend on base restraint conditions.
Original languageEnglish
Article number106880
Pages (from-to)106880
Number of pages18
JournalSoil Dynamics and Earthquake Engineering
Volume150
Early online date4 Aug 2021
DOIs
Publication statusE-pub ahead of print - 4 Aug 2021

Bibliographical note

Funding Information:
The SEBESMOVA3D project (SEeismic BEhaviour of Scaled MOdels of groin VAults made by 3D printers, https://sera-ta.eucentre.it/index.php/sera-ta-project-22/) was funded by European Union's Horizon 2020 research and innovation programme SERA, under grant agreement No 730900. The authors are grateful for this support. Thanks are also due to the laboratory personnel at EQUALS laboratory, University of Bristol, UK.

Funding Information:
The SEBESMOVA3D project (SEeismic BEhaviour of Scaled MOdels of groin VAults made by 3D printers, https://sera-ta.eucentre.it/index.php/sera-ta-project-22/ ) was funded by European Union's Horizon 2020 research and innovation programme SERA , under grant agreement No 730900. The authors are grateful for this support. Thanks are also due to the laboratory personnel at EQUALS laboratory, University of Bristol, UK.

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • Groin vault
  • 3D printer
  • Shaking table
  • Frequency
  • Damping
  • Collapse
  • Moveable springings

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