Numerical study of self-camber for timber and timber-concrete composite elements by swelling hardwood inlays
Open access
Date
2021Type
- Conference Paper
ETH Bibliography
yes
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Abstract
The often-decisive criterion for the design of timber-concrete composite (TCC) slabs is the limitation of the deflections. Especially, initial deflections of the timber part occurring during the construction state due to the added weight of fresh concrete are highly contributing to total long-term deflections. Existing measures to limit the initial deflections hinder the construction process, are time consuming, or can impair the wooden elements. Self-camber by swelling hardwood inlays, a concept to level out deflections for TCC slabs, can be used. The timber elements are programmed to camber without external force influence by solely inserting dry inlays, that expand by taking up moisture, into cuts in the upper side of the timber. This paper discusses the concept of self-camber as analysed by a parametric Finite Element study of inlay configuration. We show that the required target camber for compensating the deflections can be reached and provide guidelines to design the inlay configuration. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000508496Publication status
publishedBook title
World Conference on Timber Engineering (WCTE 2021)Pages / Article No.
Publisher
CurranEvent
Subject
Parametric modelling; Pre-camber; Self-camber; Self-shaping; Swelling inlay; Timber-concrete composite slabsOrganisational unit
08809 - Frangi, Andrea (Tit.-Prof.)
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ETH Bibliography
yes
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