A new concept of bio-based prestress technology with experimental Proof-of-Concept on Bamboo-Timber composite beams

Zhang, Hexin; Shen, Minhe; Deng, Yu; Andras, Peter; Sukontasukkul, Piti; Yuen, Terry Y.P.; Tang, Yunchao; Wong, Simon H.F.; Limkatanyu, Suchart; Singleton, Ian; Hansapinyo, Chayanon

doi:10.1016/j.conbuildmat.2023.132991

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…Zhang [39] carried out an examination on the mechanical properties of bamboo-wood composite beams, and the findings revealed a positive correlation between the number of bamboo panels and the ultimate load carrying capacity. Zhang [40] proposed a novel prestress technology to manufacture a new type of beam, which also could be a concept used in bamboo composite beams. While some beams exhibited good performance, the connection, which remains an essential issue for composite components, has yet to be properly solved.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Flexural Behavior of I-Shaped Laminated Bamboo Composite Beam as Sustainable Structural Element

Li,

Singh,

Zhou

2024

Buildings

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Laminated bamboo (LB) is considered a promising environmentally friendly material due to its notable strength and advantageous lightweight properties, making it suitable for use in construction applications. LB I-beams are a prevalent component in bamboo structures due to their ability to fully utilize their material properties and enhance efficiency when compared to beams with rectangular solid sections, while the characteristics of connections should be further studied. This paper presents an experimental investigation of the flexural behavior of I-shaped LB beams that are connected using self-tapping screws and LB dowels. Compared with glued beams of the same size, the findings of the study reveal that the primary failure modes observed in those two types of components were characterized by the separation of the component and web tensile fracture. The screw beam and dowel beam exhibited a reduced ultimate capacity of 43.54% and 30.03%, respectively, compared to the glued beam. Additionally, the ultimate deflections of the screw beam and dowel beam were 34.38% and 50.36% larger than those of the glued beam, respectively. These variations in performance can be attributed to the early breakdown of connectors. Based on design codes, it can be observed that the serviceability limits were in close proximity, whereas the ultimate strains of the top and bottom flanges were significantly lower than the ultimate stresses experienced under uniaxial loading conditions. As a result of the slip and early failure of connectors, the effective bending stiffness estimated by the Gamma method achieved better agreements before elastic proportional limit. Therefore, in future investigations, it would be beneficial to enhance the connector and fortify the flange as a means of enhancing the bending characteristics of an I-shaped beam.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on the Flexural Behavior of I-Shaped Laminated Bamboo Composite Beam as Sustainable Structural Element

Li,

Singh,

Zhou

2024

Buildings

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Characteristic and allowable compressive strengths of Dendrocalamus Sericeus bamboo culms with/without node using artificial neural networks

Buachart,

Hansapinyo,

Sukontasukkul

et al. 2024

Case Studies in Construction Materials

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A preliminary study on bamboo–timber composite columns under axial compression

Deng,

Xia,

Yang

et al. 2024

International Wood Products Journal

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Bamboo–timber composite columns hold significant promise as bio-based structural elements. However, research in this area remains limited, especially concerning modern buckling analysis methods that incorporate bio-based constitutive models of engineered bamboo and timber materials. This study aims to address this gap by proposing a proof-of-concept analytical framework based on component-based strategy for buckling analysis, utilising piecewise bio-based material constitutive models as the guide rail for its strain-stage-based component split-up. Preliminary experimental validation was performed to evaluate the feasibility of using component-based analysis to estimate the overall buckling resistance of both composite and non-composite bamboo and timber columns. This initial study offers an alternative analytical approach for estimating the buckling resistance of bio-composite columns and establishes a set of conceptual guidelines and indicative parameters for the experimental design of future research.

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A new concept of bio-based prestress technology with experimental Proof-of-Concept on Bamboo-Timber composite beams

Cited by 4 publications

References 46 publications

Experimental Study on the Flexural Behavior of I-Shaped Laminated Bamboo Composite Beam as Sustainable Structural Element

Experimental Study on the Flexural Behavior of I-Shaped Laminated Bamboo Composite Beam as Sustainable Structural Element

Characteristic and allowable compressive strengths of Dendrocalamus Sericeus bamboo culms with/without node using artificial neural networks

A preliminary study on bamboo–timber composite columns under axial compression

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