Bending performance of nail-laminated timber constructed of fast-grown plantation eucalypt

Derikvand, Mohammad; Jiao, Hui; Lee, Michael; Chan, Andrew; Nolan, G

doi:10.1007/s00107-019-01408-9

Cited by 41 publications

(22 citation statements)

References 37 publications

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“…The abundance of the species and its great performance have recently lead to important experimental research using structural-size specimens with the aim of developing new structural products [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Small Clear Specimens of Eucalyptus globulus Labill

et al. 2020

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Eucalyptus globulus Labill stands out as one of the hardwood species produced in Europe with prominent mechanical properties, which is undergoing a growing interest in extending added value. The development of engineered wood products with this species and its application in timber structures involving numerical finite element simulations requires knowledge of the mechanical properties for the different orthotropic material directions. The aim of the present study is to determine the main mechanical properties of E. globulus from small clear specimens, necessary for the development of finite element models. The work provides experimental results on the ultimate capacity and modulus of elasticity considering different stresses: tension parallel and perpendicular to the grain, compression parallel and perpendicular to the grain (in radial and tangential directions), shear and longitudinal static bending. The work is complemented with experimental data on timber-to-timber friction coefficients for 0°, 45°, and 90° orientation angles, which are useful in the modeling of traditional joints. Very high values of ultimate stress and modulus of elasticity for the different mechanical properties were obtained, highlighting the great potential of this species for structural applications.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Small Clear Specimens of Eucalyptus globulus Labill

et al. 2020

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“…Shear connectors of Ø10 mm coach screw and Ø7.5 mm SFS with length of 180 mm and 145mm were used at different orientations (i.e., ± 45Ø and 90Ø). Derikvand et al [43] experimentally investigated the bending capacity of TCC system made of nail laminated timber (NLT) and concrete under short-term bending test using Ø7.4 mm and 145 mm long SFS screw inclined at 45Ø as shear connector. The composite beams are prepared in two different arrangements of the NLT as shown in Fig.…”

Section: Bcc Beamsmentioning

confidence: 99%

“…For this purpose, the collapse load (2P c ) is divided by the total weight of the composite (i.e., weight of the glubam/ timber + weight of concrete). Note that in the design of structures, apart from the load-carrying capacity, a careful selection of material for different structural applications can be made on the basis of the specific load-carrying capacity [43]. Therefore, SLC provides a more intelligent comparison among the composites and also among each specimen.…”

Section: Comparison Of Load-bearing Capacitymentioning

confidence: 99%

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Static Performances of Timber- and Bamboo-Concrete Composite Beams: A Critical Review of Experimental Results

Deresa¹,

Xu²,

Demartino³

et al. 2021

TOBCTJ

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The use of composite beams made with traditional concrete and bio-based materials (such as timber and bamboo) is a valuable solution to reduce the environmental impact of the building sector. Timber-Concrete Composite (TCC) beams have been used for decades in structural applications such as new buildings, refurbishment of old timber structures, and bridges. Recently, different researchers suggested composite beams based on engineered bamboo, commonly named Bamboo-Concrete Composite (BCC) beams. This study presents a systematic comparison of structural performances and connection behavior of TCC and BCC beams under short-term static load. TCCs beams are compared to BCC ones using similar shear connectors. The most important aspects of the two composite systems are compared: mechanical behavior of connectors and structural behaviors of full-scale composite beams (e.g., failure modes, connection stiffness, connection shear strength, ultimate load-carrying capacity, maximum deflection and composite efficiency). This comprehensive review indicates that BCC beams have similar or even better structural performances compared with TCC.

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“…Another novel research line has been to the production on structural panels made of Eucalyptus nitens . Among the various applications, plywood [ 15 ], LVL [ 16 ], cross-laminated timber [ 17 ], and nail-laminated timber [ 18 , 19 ] stand out. The results of these studies show that the selection of timber boards with optimal structural quality is crucial for generating high standard panels.…”

Section: Introductionmentioning

confidence: 99%

Non-Destructive Assessment of the Dynamic Elasticity Modulus of Eucalyptus nitens Timber Boards

2021

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Eucalyptus nitens is a fast-growing wood species with a relevant presence in countries like Australia and Chile. The sustainable construction goals have driven the search of structural applications for Eucalyptus nitens; however, this process has been complicated due to the defects usually presented in these timber boards. This study aims to evaluate the dynamic elasticity modulus (Exd) of Eucalyptus nitens timber boards through non-destructive vibration-based tests. Thirty-six timber boards with different levels of knots and cracks were instrumented and tested in a simply supported condition by measuring longitudinal and transverse vibrations. In the first stage, the Exd was calculated globally through simplified normative formulas. Then, in a second stage, the local variability of the Exd was estimated using operational modal analysis (OMA), finite element numerical simulations (FEM), and regional sensitivity analysis (RSA). The positive correlation found between the global static modulus of elasticity and Exd suggests that non-destructive techniques could be used as a reliable and fast alternative for the assessment of bending stiffness. Finally, the proposed method to estimate the local variability of Exdt based on the combination of OMA, FEM, and RSA techniques was useful to improve the structural selection process of timber boards for lightweight social housing floors.

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Bending performance of nail-laminated timber constructed of fast-grown plantation eucalypt

Cited by 41 publications

References 37 publications

Mechanical Properties of Small Clear Specimens of Eucalyptus globulus Labill

Mechanical Properties of Small Clear Specimens of Eucalyptus globulus Labill

Static Performances of Timber- and Bamboo-Concrete Composite Beams: A Critical Review of Experimental Results

Non-Destructive Assessment of the Dynamic Elasticity Modulus of Eucalyptus nitens Timber Boards

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