Cyclic response of laminated bamboo lumber nailed connection: Theoretical modelling and experimental investigations

This paper presents and discusses the experimental study on the mechanical properties of LBL column both under axial and eccentric compression. The results shows that the ultimate load for the eccentric compression specimens with the eccentricity values of 30 mm and 110 mm are 95.2 kN and 31.8 kN respectively. Eccentricity is one of the main influencing factors for the ultimate bearing capacity of the LBL columns. Because of the vulnerability of the mechanical connections or natural nodes to tensile stress and secondly, laminated bamboo is vulnerable to defects that has more detrimental influence on the tensile resistance of the material. The variation in strain for the laminated bamboo lumber column sections is linear throughout the loading process, following standard normal section bending theory which is similar as that for the beam.

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Mechanical behavior of laminated bamboo lumber dowel-type connection

Advances in Structural Engineering ◽

10.1177/1369433219866091 ◽

2019 ◽

Vol 23 (1) ◽

pp. 65-73 ◽

Cited By ~ 1

Author(s):

Jiannan Li ◽

Aiping Zhou

Keyword(s):

Rectangular Cross Section ◽

High Strength ◽

Strength Properties ◽

Loading Capacity ◽

Yield Model ◽

Specific Strength ◽

High Specific Strength ◽

Laminated Bamboo ◽

Theoretical Results ◽

Laminated Bamboo Lumber

Bamboo is a kind of green material with high specific strength, while the hollow tubular structure makes it rather hard to be utilized in structure. Glue and hot-pressing processes make laminated bamboo lumber rectangular cross section and with high strength properties. The dowel-type connection can be used in I-joist instead of the costly adhesive, while the behaviors of which are extremely complicated. European yield model is confirmed to be an effective method to estimate loading capacity of connection and is adopted by various standard and design codes. This article focused on a kind of connection innovatively with laminated bamboo lumber dowel. The embedment tests were carried out to study the embedment strength of laminated bamboo lumber members. Connection tests under lateral load were conducted to investigate the performance and loading capacity. Finally, theoretical results determined by design rules in current codes were compared with experimental results

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Slenderness Ratio Effect on the Eccentric Compression Performance of Chamfered Laminated Bamboo Lumber Columns

JOURNAL OF RENEWABLE MATERIALS ◽

10.32604/jrm.2021.017223 ◽

2021 ◽

Vol 9 (12) ◽

pp. 165-182

Author(s):

Ke Zhou ◽

Haitao Li ◽

Assima Dauletbek ◽

Dong Yang ◽

Zhenhua Xiong ◽

...

Keyword(s):

Slenderness Ratio ◽

Ratio Effect ◽

Compression Performance ◽

Eccentric Compression ◽

Laminated Bamboo ◽

Laminated Bamboo Lumber

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The Impact and Modelling of Concentrated Butt-Joints on Vertically Laminated Bamboo-Timber Hybrid Bio-Flitch Beams

10.21203/rs.3.rs-752107/v1 ◽

2021 ◽

Author(s):

Hexin Zhang ◽

Niaz Gharavi ◽

Simon H.F. Wong ◽

Yu Deng ◽

Ali Bahadori-Jahromi ◽

...

Keyword(s):

Experimental Study ◽

Close Agreement ◽

Experimental Results ◽

Flexural Properties ◽

Butt Joints ◽

Laminated Bamboo ◽

Structural Applications ◽

Hybrid Beams ◽

The Impact ◽

Laminated Bamboo Lumber

Abstract This paper presents the experimental and analytical studies to investigate the impact of concentrated laminated bamboo butt-joints on the flexural properties of vertically laminated bamboo-timber hybrid beams (VLHBs, or flitch beam). The experimental results reveal that the concentrated butt-joints significantly reduce the flexural strength of the VLHB. They also suggest that the failure mechanism of the VLHBs with or without concentrated butt-joints are completely different. In addition, laminated bamboo lumber with concentrated butt-joints was found to be unsuitable for structural applications. The analytical estimations show close agreement with the experimental results. However, due to the layout of the sample VLHB, the experimental study cannot confirm the impact of the butt-joints on the modulus of elasticity in bending.

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