Show simple item record

dc.contributor.author
Del Giudice, Lorenzo
dc.contributor.author
Wrobel, Rafal
dc.contributor.author
Leinenbach, Christian
dc.contributor.author
Vassiliou, Michalis F.
dc.date.accessioned
2021-06-15T07:40:06Z
dc.date.available
2021-06-15T07:17:32Z
dc.date.available
2021-06-15T07:40:06Z
dc.date.issued
2020-06
dc.identifier.uri
http://hdl.handle.net/20.500.11850/489617
dc.identifier.doi
10.3929/ethz-b-000489617
dc.description.abstract
Blind prediction contests of shake table tests of RC structures show that most contesting models fail to predict the seismic response of a structure. Given that models behave better at the component level, we conclude that a large part of the error/uncertainty sources from the “global level assumptions” (e.g. damping formulation, interaction of components etc.). In parallel, attempting to predict the maximum of the response to an individual ground motion is too strict of a validation test. In Earthquake Engineering, the hazard is defined by a set of ground motions and the task of the engineer is to predict some statistic of the maxima of the time history responses. There are cases where current models fail to predict the response to individual ground motions, but can excellently predict the CDF of the maxima of the responses to multiple ground motions. Therefore, there is a need to statistically validate the global assumptions of numerical models. Such a procedure requires a virgin specimen (e.g. a full building) for each ground motion. This is not feasible in full scale, but it can be done at small scale in a centrifuge. Then, building reinforcement with submillimeter diameters and manually placing it becomes a major issue. This can be solved by a metal 3D printer. This paper presents some first experimental results on compression tests on micro-concrete that uses sand and gypsum plaster, 4 point bending tests on 10x10x80mm unreinforced micro-concrete beams, tension tests on 3D printed steel rebars having a 0.5mm diameter, and 4 point bending tests on a 12.5x12.5x70mm micro-RC beam. The results are encouraging: the compression and tension behavior of concrete, the tensile behavior of steel, the beam ductility observed, the cracking patterns, and the bonding behavior between the concrete and the rebars is similar to full scale models.
en_US
dc.format
application/pdf
en_US
dc.publisher
ETH Zurich, Institute of Structural Engineering (IBK)
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.subject
Model Validation
en_US
dc.subject
physical modelling
en_US
dc.subject
additive manufacturing
en_US
dc.subject
reinforced concrete
en_US
dc.subject
Small Scale Testing
en_US
dc.title
Physical modelling of RC structures through digitally manufactured small-scale specimens for centrifuge testing
en_US
dc.type
Conference Paper
dc.rights.license
In Copyright - Non-Commercial Use Permitted
ethz.size
10 p. accepted version
en_US
ethz.version.deposit
acceptedVersion
en_US
ethz.event
fib Symposium 2021: Concrete Structures: New trends for Eco-Efficiency and Performance
en_US
ethz.event.location
Lisbon, Portugal
en_US
ethz.event.date
June 14–16, 2021
en_US
ethz.notes
Conference lecture held on June 14, 2021
en_US
ethz.publication.place
Zurich
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02605 - Institut für Baustatik u. Konstruktion / Institute of Structural Engineering::09663 - Vassiliou, Michalis / Vassiliou, Michalis
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02605 - Institut für Baustatik u. Konstruktion / Institute of Structural Engineering::09663 - Vassiliou, Michalis / Vassiliou, Michalis
en_US
ethz.date.deposited
2021-06-15T07:17:38Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-06-15T07:40:17Z
ethz.rosetta.lastUpdated
2022-03-29T08:46:36Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Physical%20modelling%20of%20RC%20structures%20through%20digitally%20manufactured%20small-scale%20specimens%20for%20centrifuge%20testing&rft.date=2020-06&rft.au=Del%20Giudice,%20Lorenzo&Wrobel,%20Rafal&Leinenbach,%20Christian&Vassiliou,%20Michalis%20F.&rft.genre=proceeding&rft.btitle=Physical%20modelling%20of%20RC%20structures%20through%20digitally%20manufactured%20small-scale%20specimens%20for%20centrifuge%20testing
 Search print copy at ETH Library

Files in this item

Thumbnail

Publication type

Show simple item record