Identifying the Characteristics of Laminated Wood Based on the Values of Deflection Measured during its Bending

Ruman, Daniel; Záborský, Vladimír; Svoboda, Tomáš; Kašičková, Václava; Rodrová, Veronika

doi:10.15376/biores.12.2.2592-2608

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…The thickness of the boards generally varies between 10 and 22 mm, with the width between 70 and 250 mm and length between 250 and 2500 mm. Due to its elastic modulus, this type of flooring is able to adapt to deformations far greater than those generally considered acceptable for the slabs of a multi-story building [22].…”

Section: Flooringsmentioning

confidence: 99%

A Proposal to Improve the Effectiveness of the Deflection Control Method Provided by Eurocodes for Concrete, Timber, and Composite Slabs

D’Antino

Pisani

2021

Materials

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Limited deflection of structural members represents an important requirement to guarantee proper functionality and appearance of building and infrastructures. According to Eurocodes, this requirement is ensured by limiting the maximum deflection of horizontal structural members to a fraction of their span. However, each Eurocode provides different maximum deflection limits, which are independent of the type of superstructures considered. Thus, the respect of these limits may not always guarantee the integrity of certain superstructures. In this paper, the reliability of the Eurocode deflection control methods, in guaranteeing the integrity of the superstructures, is assessed and discussed. First, different types of horizontal member, namely rib and clay (hollow) pot, composite steel–concrete, and timber beam slabs are designed to respect the deflection limit enforced by the Eurocodes. Then, the maximum curvature developed by these members is compared with the ultimate (limit) curvatures of various superstructures (e.g., ceramic and stone tile floorings). The results obtained show that the approach adopted by Eurocode 2 may provide non-conservative results, but also that the rules proposed by Eurocodes 4 and 5, albeit more reliable, do not always guarantee the integrity of the superstructure. Based on these results, an alternative method, based on the curvature control, is proposed and its advantages and limitations critically discussed. This method appears simpler and more reliable than the method currently adopted by the Eurocodes.

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Section: Flooringsmentioning

confidence: 99%

A Proposal to Improve the Effectiveness of the Deflection Control Method Provided by Eurocodes for Concrete, Timber, and Composite Slabs

D’Antino

Pisani

2021

Materials

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“…The bending ability of glued beams was also examined in the study by Ruman et al (2017). The study examined the influence of wood species, lamella combination, type of adhesive, number of loading cycles on the deflection at the proportionality limit, deflection at the point rupture, and the ratio between the deflection at the proportionality limit and the deflection at the point of rupture in laminated wood.…”

Section: Introductionmentioning

confidence: 99%

Bending and energy absorption performance of novel openwork wooden panels

2022

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In many scientific studies, beams reinforced with synthetic fiber ribbons are modeled, wood composites and materials are designed, and structures made with hollow core boards are developed. However, no research was conducted on increasing the width of the flat wooden panels by modeling an openwork structure and obtaining them from solid panels of smaller width. The research aimed to determine the impact of wood species and inclination angle of the side walls on the stiffness, strength, and ability to absorb the energy of the new openwork panel made of curvilinear wooden slats. Three-point bending tests were performed numerically and verified experimentally. It has been shown that the stiffness of the openwork panels was lower compared to solid panels. No cracks in the glue line were observed. Walnut openwork panels demonstrated the best energy absorption capacity. Therefore, it is recommended that the openwork panels be made out of walnut and beech wood, rather than ash and oak. It is also more advantageous for the panel’s construction to use the 11° inclination angle of the side walls.

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Identifying the Characteristics of Laminated Wood Based on the Values of Deflection Measured during its Bending

Cited by 2 publications

References 8 publications

A Proposal to Improve the Effectiveness of the Deflection Control Method Provided by Eurocodes for Concrete, Timber, and Composite Slabs

A Proposal to Improve the Effectiveness of the Deflection Control Method Provided by Eurocodes for Concrete, Timber, and Composite Slabs

Bending and energy absorption performance of novel openwork wooden panels

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