Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
CLT-concrete composite floors with notched shear connectors
Taihu Univ Wuxi, Coll Civil Engn, Wuxi 214064, Peoples R China..
KTH, School of Architecture and the Built Environment (ABE).
2019 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 195, p. 127-139Article in journal (Refereed) Published
Abstract [en]

The aim of the paper is to gain data on the mechanical behaviour of CLT-concrete composite floors and subsequently to check if commonly adopted analysis methods are suitable for this particular type of structure. The studies are conducted through laboratory tests, analytical models and numerical modelling. In the shear tests, the notched connections presented considerable stiffness and shear capacity, and failed eventually with shear fracture in the concrete. The bending test results showed that the CLT-concrete composite floors with notched connections had a very high composite action. At the moment of failure, all notched connections along the span remained nearly undamaged, and only one fine concrete crack appeared at the notch near the support. The paper also presents a theoretical calculation method based on the well-known gamma-method, which is suitable for CLT-concrete composite floors. In particular, for the composite floors with 5-layer-CLT panel, a model using a combined distributed stiffness is introduced to take account of the stiffness of both the mechanical fasteners and the CLT's cross layer, which extends the validity range of the gamma-method to composite systems made of CLT panels with more than three layers. Three-dimensional FE-models for CLT-concrete notched connections and for composite floors are developed using the commercial finite element programme ABAQUS. With the FE-models calibrated with experimental results, parametric studies are conducted to investigate the influence of the notch depth on the mechanical performance of both notched connections and CLT-concrete composite floors. It is concluded that the stiffness of notched connections increases linearly with the depth of the notch, while it is not this case for the shear capacity. The variation of notch depth within the investigated range, i.e. 15 mm to 35 mm, is found to have no significant influence on the load-deflection response of composite floors. 

Place, publisher, year, edition, pages
ELSEVIER SCI LTD , 2019. Vol. 195, p. 127-139
Keywords [en]
CLT-concrete composite floor, Shear tests, Bending tests, gamma-Method, FE-model, Parametric study
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-244543DOI: 10.1016/j.conbuildmat.2018.11.066ISI: 000457659600012Scopus ID: 2-s2.0-85056449219OAI: oai:DiVA.org:kth-244543DiVA, id: diva2:1302436
Note

QC 20190404

Available from: 2019-04-04 Created: 2019-04-04 Last updated: 2019-04-04Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Crocetti, Roberto

Search in DiVA

By author/editor
Crocetti, Roberto
By organisation
School of Architecture and the Built Environment (ABE)
In the same journal
Construction and Building Materials
Composite Science and Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 29 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf