Development of creep deformations during service life: a comparison of CLT and TCC floor constructions
Authors:
- Eva Binder,
- Wit Derkowski,
- Thomas K. Bader
Abstract
Cross-laminated timber (CLT) slabs in residential buildings need additional weight, e.g., in the form of screeds or gravel layers, to fulfil the criterion for the highest impact-sound class. The additional mass is, however, not exploited for the load-bearing behavior, but adds additional weight and leads to an increased height of the floor construction. In this study, such a CLT floor construction with a construction height of 380 mm is compared with a composite slab consisting of a CLT plate with a concrete layer on top with a floor construction height of 330 mm. The timber concrete composite (TCC) slab has a different creep behavior than the CLT slab. Thus, the development of the time-dependent deflections over the service life are of interest. A straightforward hybrid approach is developed, which exploits advanced multiscale-based material models for the individual composite layers and a standardized structural analysis method for the structural slab to model its linear creep behavior. The introduced approach allows to investigate load redistribution between the layers of the composite structure and the evolution of the deflection of the slab during the service life. The investigated slab types show a similar deflection after 50 years, while the development of the deflections over time is different. The CLT slab has a smaller overall stiffness at the beginning but a smaller decrease in stiffness over time than the investigated TCC slab.
- Record ID
- CUTab96e78ead584817b4a9e67407944d27
- Publication categories
- ;
- Author
- Journal series
- Buildings, ISSN , e-ISSN 2075-5309, [2471-3112, 0007-3725], Monthly
- Issue year
- 2022
- Vol
- 12
- No
- 2
- Pages
- 1-15
- Article number
- 239
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 14-15; Bibliografia (liczba pozycji) - 49; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 12, Iss. 2, Spec. Iss.
- Substantive notes
- Special Issue: Timber Structures: Latest Developments, Challenges, and Perspectives
- Keywords in English
- serviceability limit state, cross-laminated timber, timber concrete composite, gamma-method, linear viscoelasticity
- ASJC Classification
- ; ;
- DOI
- DOI:10.3390/buildings12020239 Opening in a new tab
- URL
- https://www.mdpi.com/2075-5309/12/2/239 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 70
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTab96e78ead584817b4a9e67407944d27/
- URN
urn:pkr-prod:CUTab96e78ead584817b4a9e67407944d27
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.