Bending Behavior of Nailed-Jointed Cross-Laminated Timber Loaded Perpendicular to Plane

Pang, Sung-Jun; Kim, Kwang-Mo; Park, Sun-Hyang; Lee, Sang-Joon

doi:10.5658/wood.2017.45.6.728

Cited by 6 publications

(1 citation statement)

References 14 publications

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“…Alternative methodologies for jointing sawn boards such as using mechanical joints will provide the possibility to simplify the manufacturing procedure of CLT and give a chance for relatively small mills to produce CLT. The bending behaviour of nailed jointed CLT is reported by Sung-Jun Pang et.al [1]. And in Europe the Massiv-Holz-Mauer (MHM) is manufactured and the characteristic values of the panels are evaluated by European Technical Assessment [2].…”

Section: Introduction 234mentioning

confidence: 99%

Shear Through the Thickness Property of Screw Laminated Cross Laminated Timber

Nakajima

2023

World Conference on Timber Engineering (WCTE 2023)

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This paper focus on the shear through the thickness properties of screw laminated cross laminated timber. The shear through the thickness properties of screw laminated cross laminated timber was verified from the results of the shear through the thickness test. Four test specimens with different joint configuration and one test specimen with opening were tested to verify the effect of the number of joints and the length from the screwed joints to the center point of an over wrapping part of the laminations i.e. the length of the moment arm. The test results indicated that the shear through the thickness properties of screw laminated cross laminated timber depends on the number of screwed joints and the length of the moment arm. To estimate the shear through the thickness properties of screw laminated cross laminated timber a structural model and a calculation method were proposed. The load deformation curve of the screw laminated cross laminated timber derived from the proposed structural model and calculation method well estimated the test results at relatively small deformation level. The force caused by the embedment between the laminations brought a difference at the relatively large deformation level.

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Section: Introduction 234mentioning

confidence: 99%

Shear Through the Thickness Property of Screw Laminated Cross Laminated Timber

Nakajima

2023

World Conference on Timber Engineering (WCTE 2023)

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Static Bending Performances of Cross-Laminated Wood Panels Made with Tropical and Temperate Woods

Byeon¹,

Kim²,

Yang³

et al. 2018

Journal of the Korean Wood Science and Technology

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In this study, for using effectively domestic (temperate) small and medium diameter logs as a wooden floorboard, cross-laminated wood panels were manufactured using domestic larch and tulip woods as a base material for teak and merbau wood flooring, and static bending strength performances were measured to investigate the applicability as the base materials of wooden flooring in place of plywood. Static bending MOE was much influenced by the strength performances of the top layer lamina than that of the laminae for base materials. Bending MOR showed the higher values in tulip wood that was hardwoods than in larch wood that was softwoods regardless of the strength performances of the top layer laminae, and it was found that the values were much influenced by the strength performances of the base materials used in the core and bottom layers. However these values were 1.4-2.5 times higher values than the bending strength of the wooden floorboards specified in KS, it was found that it can be sufficiently applied to the base materials of wooden floorboards in place of plywood.

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Lateral Resistance of CLT Wall Panels Composed of Square Timber Larch Core and Plywood Cross Bands

Jang¹,

Lee²

2019

Journal of the Korean Wood Science and Technology

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Thinned, small larch logs have small diameters and no value-added final use, except as wood chips, pallets, or fuel wood, which are products with very low economic value; however, their mechanical strength is suitable for structural applications. In this study, small larch logs were sawed, dried, and cut into square timbers (with a 90 mm × 90 mm cross section) that were laterally glued to form core panels used to manufacture cross-laminated timber (CLT) wall panels. The surface and back of these core panels were covered with 12-mm-thick structural plywood panels, used as cross bands to obtain three-ply CLT wall panels. This attachment procedure was conducted in two different ways: gluing and pressing (CGCLT) or gluing and nailing (NGCLT). The size of the as-manufactured CLT panels was 1,220 mm × 2,440 mm, the same as that of the plywood panels. The final wall panels were tested under lateral shear force in accordance with KS F 2154. As the lateral load resistance test required 2,440 mm × 2,440 mm specimens, two CLT wall panels had to be attached in parallel. In addition, the final CLT panels had tongued and grooved edges to allow parallel joints between adjacent pieces. For comparison, conventional light-frame timber shear walls and midply wall systems were also tested under the same conditions. Shear walls with edge nail spacing of 150 mm and 100 mm, the midply wall system, and the fabricated CGCLT and NGCLT wall panels exhibited maximum lateral resistances of 6.1 kN/m (100%), 9.7 kN/m (158%), 16.9 kN/m (274%), 29.6 kN/m (482%), and 35.8 kN/m (582%), respectively.

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Bending Behavior of Nailed-Jointed Cross-Laminated Timber Loaded Perpendicular to Plane

Cited by 6 publications

References 14 publications

Shear Through the Thickness Property of Screw Laminated Cross Laminated Timber

Shear Through the Thickness Property of Screw Laminated Cross Laminated Timber

Static Bending Performances of Cross-Laminated Wood Panels Made with Tropical and Temperate Woods

Lateral Resistance of CLT Wall Panels Composed of Square Timber Larch Core and Plywood Cross Bands

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