Refurbishment of existing timber floors with screwed CLT panels

Roensmaens, Bertrand; Parys, Laurent Van; Carpentier, Olivier; Descamps, Thierry

doi:10.1080/15583058.2018.1442522

Cited by 12 publications

(10 citation statements)

References 7 publications

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“…This failure mode is very ductile and testify of a good balance between the diameter of the screws and the timber elements thicknesses. So, it seems to be wise to target such a failure mode for the refurbishment of timber floors [7]. A new analytical model has been developed to consider the inner gap between the timber members.…”

Section: Connector Characteristicsmentioning

confidence: 99%

“…The failure mode is the one with the lowest load-carrying capacity (failure mode (f)). It was assumed then this failure mode would be the same for the connection with a 50 mm gap [7]. Table 2 presents, for the initial timber floor and its refurbishment, the effective stiffness of the whole section, the calculated stress and the corresponding limit values.…”

Section: Strengthening Of An Existing Timber Floormentioning

confidence: 99%

“…Among all existing mechanical fasteners, the use of inclined STS (45 degrees screwing) seems to be the more efficient because of their low cost and the ease to use. Convinced of the interest of this method, a design model for a CLT-to-timber composite T section has been developed and discussed in [7]. This original strengthening technique consist in inserting timber blocks between the CLT panel and the joists to increase the whole stiffness (second moment of inertia).…”

Section: Introductionmentioning

confidence: 99%

“…The angle of 45 degree increases the strength and the stiffness of the shear connections between the flange and the web of the composite section (see Fig.2). This paper sums up the complete analytical development that can be found in [7]. Additional discussion is then made for a particular geometry about the influence of the connector's stiffness on the design.…”

Section: Introductionmentioning

confidence: 99%

“…The equilibrium equations lead to the load-carrying capacity for failure mode (f) (see Eq. (8)), which is the generalized formulation of Bejtka's equation (gap and compression resistant interlayer)[7].…”

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confidence: 99%

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Proposal of a CLT Reinforcement of Old Timber Floors

et al. 2019

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Despite the fact that, from the mechanical point of view, there is no ageing issues of timber elements when they are properly used, many old timber structures require important interventions because of changes in uses (which modifies the regulating rules for example), of material decay (misuse of timber) or possibly of a faulty design or construction. In particular, timber floors in old structures often present large deflections and most the time had been designed for a maximum load much lower than the one prescribed by contemporary rules. After an introduction about timber floors and a short review about the reinforcement technics that exist, the present paper presents a new proposal for their reinforcement. The solution developed in the present paper uses a Cross Laminated Timber (CLT) panel screwed over the existing floor, keeping a small gap between the panel and the existing joists. In this way, the new "composite" floor presents higher stiffness and the gap is used for horizontal line runs. For the design of such a "composite floor", modified Johanssen's equations (including the gap between the CLT panel and the joists) are proposed and their application on a case study is presented.

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Section: Connector Characteristicsmentioning

confidence: 99%

Section: Strengthening Of An Existing Timber Floormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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