CUED Publications database

3D printing of masonry structures for centrifuge modelling

Ritter, S and DeJong, MJ and Giardina, G and Mair, RJ (2018) 3D printing of masonry structures for centrifuge modelling. In: 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), 2018-7-17 to 2018-7-20 pp. 449-454..

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Abstract

© 2018 Taylor & Francis Group, London. Centrifuge modelling necessitates large scale factors due to space and payload limitations. Hence, replicating details of a prototype is difficult. This is particularly true for masonry buildings with highly nonlinear material properties and building features that affect the structural behaviour. This paper discusses powder based 3D printing to replicate masonry structures in centrifuge models. Four-point-bending tests determined the mechanical properties of the 3D printed material. Results reveal a variation in material properties with position and orientation of the 3D printed object in the print bed. After restricting the position of the model in the print bed, repeatable material properties with lower stiffness and higher strength than typical masonry were observed. However, building layout and window opening percentage could be adjusted to create building models with overall bending and axial stiffness typically obtained in the field. These improved 3D printed scale models were subsequently used in centrifuge tests exploring building response to tunnel subsidence. Results show that powder based 3D printed models provide a level of detail not previously simulated in the centrifuge, unlocking new information regarding this soil–structure interaction problem.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 11 Jul 2018 20:05
Last Modified: 27 Oct 2020 05:52
DOI: 10.1201/9780429438660-64