Mechanical Properties of Glued‐Laminated Timber with Different Assembly Patterns

Gao, Shan; Xu, Mingwei; Guo, Nan; Zhang, Ying

doi:10.1155/2019/9495705

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…Glulam can be considered the evolution of lumber beams as the production process involves a more advanced technique, which distributes the natural defects of the wood more evenly in the piece, reducing the standard deviation of its physical and mechanical properties, and therefore increasing its bending strength (THORHALLSSON; HINRIKSSON; SNAEBJÖRNSSON, 2017). The laminations with their grains oriented along the length of the piece can be distributed in the cross-section to generate homogeneous or combined glulam, and in turn, straight, tapered, or curved pieces can be manufactured (BRITISH…, 1999;GAO et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance analysis in bending of glulam beams reinforced with synthetic Vectran fibres

Vilela,

Mascia,

Donadon

et al. 2023

Ambient. constr.

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Synthetic fibres applied as reinforcement in glued laminated timber (glulam) intend to increase the mechanical performance of beams, changing the brittle to ductile mechanical behaviour of wooden beams. This paper investigates the experimental results of glulam beams reinforced with synthetic fibre subjected to bending and compares them with those obtained by both an analytical method and the numerical method using the Ansys® software. Glulam beams were produced with a low-grade strength class wood species (Pinus elliottii) glued with an adhesive of emulsion isocyanate polymeric and reinforced with Vectran® synthetic fibres, positioned on the bottom of the beam. This type of fibre is not yet widely used for structural reinforcement. A three-point bending test was performed for loading in the elastic regime of the glulam beams. The results obtained indicate acceptable approximations of vertical displacements and normal stresses due to the bending of the beam with eight layers of synthetic fabric, both favourable to structural safety, in addition to the significant increase in stiffness of glulam with the introduction of Vectran® fibre reinforcement.

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Section: Introductionmentioning

confidence: 99%

Mechanical performance analysis in bending of glulam beams reinforced with synthetic Vectran fibres

Vilela,

Mascia,

Donadon

et al. 2023

Ambient. constr.

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“…Other influences on the properties of wood are the soil, climate, altitude, the season in which the tree was cut, and, last but not least, the method and quality of processing. In the case of wood as a construction material, we speak either of sawn wood, which is obtained by cutting from conifers or broad-leaved trees [ 22 ], or wood-based materials, such as glued laminated timber [ 23 ], which is produced by gluing wooden squares to the required size and shape. Wood shows different physical and mechanical properties in mutually perpendicular directions.…”

Section: Introductionmentioning

confidence: 99%

Rotational Stiffness and Carrying Capacity of Timber Frame Corners with Dowel Type Connections

et al. 2021

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With the development of wooden structures and buildings, there is a need to research physical and numerical tests of wood-based structures. The presented research is focused on construction and computational approaches for new types of joints to use in wooden structures, particularly glued lamella elements made of wood and wood-based composites. This article focuses on improving the frame connection of a wooden post and a beam with the use of fasteners to ensure better load-bearing capacity and stiffness of the structure. In common practice, bolts or a combination of bolts and pins are used for this type of connection. The aim is to replace these commonly used fasteners with modern ones, namely full thread screws. The aim is also to shorten and simplify the assembly time in order to improve the load-bearing capacity and rigidity of this type of frame connection. Two variations of the experimental test were tested in this research. The first contained bolts and pins as connecting means and the second contained the connecting means of a full threaded screw. Each experiment contained a total of two tests. For a detailed study of the problem, we used a 2D or 3D computational model that models individual components, including fasteners.

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“…The soil, climate, altitude, the time of the year in which the tree was cut and, last but not least, the subsequent method and quality of processing have a major impact on the characteristics of timber. In the case of wood as a structural material, either grown wood, which is obtained by cutting from a trunk of coniferous or broadleaved timber [2], or wood-based material such as glued laminated timber [3], which is made by gluing timber laminations to the required size and shape, are considered. The timber exhibits different physical and mechanical properties in mutually perpendicular directions.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Rotational Stiffness of the Timber Frame Connection

et al. 2020

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Initially, timber was considered only as an easily accessible and processable material in nature; however, its excellent properties have since become better understood. During the discovery of new building materials and thanks to new technological development processes, industrial processing technologies and gradually drastically decreasing forest areas, wood has become an increasingly neglected material. Load-bearing structures are made mostly of reinforced concrete or steel elements. However, ecological changes, the obvious problems associated with environmental pollution and climate change, are drawing increasing attention to the importance of environmental awareness. These factors are attracting increased attention to wood as a building material. The increased demand for timber as a building material offers the possibility of improving its mechanical and physical properties, and so new wood-based composite materials or new joints of timber structures are being developed to ensure a better load capacity and stiffness of the structure. Therefore, this article deals with the improvement of the frame connection of the timber frame column and a diaphragm beam using mechanical fasteners. In common practice, bolts or a combination of bolts and pins are used for this type of connection. The subject of the research and its motivation was to replace these commonly used fasteners with more modern ones to shorten and simplify the assembly time and to improve the load capacity and rigidity of this type of frame connection.

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Mechanical Properties of Glued‐Laminated Timber with Different Assembly Patterns

Cited by 10 publications

References 26 publications

Mechanical performance analysis in bending of glulam beams reinforced with synthetic Vectran fibres

Mechanical performance analysis in bending of glulam beams reinforced with synthetic Vectran fibres

Rotational Stiffness and Carrying Capacity of Timber Frame Corners with Dowel Type Connections

Analysis of Rotational Stiffness of the Timber Frame Connection

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