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Experimental Investigation into the Flexural Behavior of Hollow, Full, and Intermittently Stiffened (bamboo-like) Glulam Beams from Larch Wood

https://research.thinkwood.com/en/permalink/catalogue2461
Year of Publication
2019
Topic
Mechanical Properties
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Application
Beams

Experimental Research on Structural Behaviors of Glulam I-Beam with a Special-Shaped Section

https://research.thinkwood.com/en/permalink/catalogue2447
Year of Publication
2020
Topic
Design and Systems
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams

Experimental Study of the Bending Performance of Hollow Glulam Beams

https://research.thinkwood.com/en/permalink/catalogue1437
Year of Publication
2018
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Author
Shang, Peng
Sun, Youfu
Zhou, Dingguo
Qin, Kai
Yang, Xiaolin
Publisher
Society of Wood Science and Technology
Year of Publication
2018
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Topic
Mechanical Properties
Keywords
Larch
Four Point Bending Test
Bending Stiffness
Load Capacity
Midspan Deflection
Failure Modes
Modulus of Elasticity
Research Status
Complete
Series
Wood and Fiber Science
Summary
Hollow glilam beam has some advantages that the traditional solid glulam beam does not have, such as the convenience for wiring construction and comparably light weight. Four-point bending tests of three solid glulam beams and 15 hollow glulam beams with various sizes of rectangular holes produced from small-diameter larch timber were conducted to investigate the influence of the hollow ratio and wall thickness on bending stiffness and load capacity. The midspan deflection, cross-section strain, and ultimate load were obtained from the tests, and the detailed failure models and apparent MOE for all specimens are reported. Hollow glulam beams with the hollow ratio ranged from 25% to 40%, and the wall thickness greater than 20m after the assumption of plane section under bending moment. The apparent bending stiffness and ductility of hollow glulam beam were less than those of solid glulamb beam, and the apparent MOE is 0.86 times the elastic modulus value calculated by theory of elasticity. In addition, a calculation formula for the ultimate bending moment is proposed.
Online Access
Free
Resource Link
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Sound Insulation Performance of Structural Wood Wall Integrated with Wood Plastic Composite

https://research.thinkwood.com/en/permalink/catalogue3067
Year of Publication
2019
Topic
Acoustics and Vibration
Material
Other Materials
Application
Walls
Author
Yang, Xiaojun
Tang, Xiaolan
Ma, Lan
Sun, Youfu
Organization
Nanjing Forestry University
Publisher
Elsevier
Year of Publication
2019
Format
Journal Article
Material
Other Materials
Application
Walls
Topic
Acoustics and Vibration
Keywords
Wood Plastic Composite
WPC Building Wall
Sound Insulation Performance
Research Status
Complete
Series
Journal of Bioresources and Bioproducts
Summary
The sound insulation performance is an important technical index for evaluating the physical property of the building wall. Three kinds of structural wood walls integrated with wood plastic composite (WPC) were designed. And the sound insulation performance of the walls was studied. The results showed that for the wall that constructed by the WPC as the wall studs, compared with the one that constructed by the pine wood as the wall studs, the deviation of their sound insulation was lower than ± 3 dB. The wall's external panel material had significant effect on the wall's sound insulation property, and the contribution of the wood-plastic panel to the sound insulation was much higher than that of the polyvinyl chloride (PVC) plastic hanging board. The surrounding sealing quality of the wall's external panel material had an important influence on the sound insulation effect of the building wall, and the panel of the wood plastic interior wall had less influence on the sound insulation performance of the wall. Taking the sound-absorbing cotton or non-woven fabric as elastic strips was an effective technical measure to improve the sound insulation performance of the walls. The sound insulation was improved by 2.4 dB and 3.1dB respectively after the correction of pink noise spectrum, and increased by 2.8 dB and 3.6 dB respectively after the correction of traffic noise spectrum.
Online Access
Free
Resource Link
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