Digital analysis of the geometric variability of Guadua, Moso and Oldhamii bamboo

Lorenzo, Rodolfo; Mimendi, Leonel; Godina, Martha; Li, Hai Tao

doi:10.1016/j.conbuildmat.2019.117535

Cited by 30 publications

(20 citation statements)

References 23 publications

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“…The goal of this study was to propose new ideas about taking the advantages of bamboo and its derivatives and investigating potential improvement for a bamboo structure as a major construction material. With the investigation, the aim was to assist the future study and design of bamboo structures [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Architecture Creating Arches Using a Bamboo Grid Shell Structure: Numerical Analysis and Design

Tahmasebinia

Joshua

et al. 2021

Sustainability

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Bamboo is known as a sustainable alternative for green building design, and it has been tied culturally to some regions around the world. However, bamboo’s structural strength for different design scenarios needs more investigation before it is widely adopted. Timber and bamboo have similar mechanical properties, but the latter is a repaid, renewable, sustainable, disaster-resilient system and is versatile, which has more advantages for construction purposes. Natural bamboo and its derivatives have been considered as a high-demand green and environmentally responsible alternative construction material, and this interest is increasing globally. Because of the rapid growth rate and large developing area, it is more useable than the limited timber resource. However, natural bamboo has an anisotropic and nonhomogeneous material property, which varies in multiple directions. There is limited engineering data and investigation of bamboo material and its use in and impact on construction. In this study, three different bamboo models were analyzed by Strand7; each of them had different features in structure and in the major construction material. A new model was proposed by improving the three given structures and was maximized in the mechanical capacity. Some design guidelines were proposed based on the analysis and comparison of different bamboo structures. The model will replace natural bamboo with bamboo scrimber, which is an engineered bamboo derivative that has more uniform material properties.

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Section: Introductionmentioning

confidence: 99%

Sustainable Architecture Creating Arches Using a Bamboo Grid Shell Structure: Numerical Analysis and Design

Tahmasebinia

Joshua

et al. 2021

Sustainability

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show abstract

“…It can be concluded from above research that the slenderness ratio will undoubtedly affect their mechanical properties for bamboo components under axial loading. Some researchers (e.g., Li et al [31,32]; Gan et al [33]; Palombini et al [34]) have proved that the slenderness ratio and the aspect ratio are important influencing parameters for bamboo composite compression components. However, for original bamboo under axial compression, in addition to the slenderness ratio, the sectional geometries are also key influencing factors, which was not mentioned in the above research.…”

Section: Introductionmentioning

confidence: 99%

Influence of slenderness ratio and sectional geometry on the axial compression behavior of original bamboo columns

Nie¹,

Wei²,

Huang³

et al. 2021

J Wood Sci

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Bamboo has been widely used as a load-bearing material in construction; however, there are limited studies on the stability of slender original bamboo columns. Based on the experimental investigation of thirty-nine original bamboo columns, parametric analyses were conducted to investigate the influence of the diameter–thickness ratio, cross-sectional area and slenderness ratio on the axial compression behavior of original bamboo columns. The test results indicate that the failure modes of the columns are substantially affected by the slenderness ratio and diameter–thickness ratio. For columns with the same diameter–thickness ratio, the ultimate bearing capacity was negatively correlated with the slenderness ratio, and the highest reduction rate for the load-bearing capacity caused by the slenderness ratio was 44.39%. Under the same slenderness ratio, when the diameter–thickness ratio increased by 18.75%, the ultimate bearing capacity increased by 82.65%. An excessive slenderness ratio may result in local buckling, leading to underutilization of the material strength when failure occurs and substantially reducing the load capacity of bamboo columns. Local buckling can be mitigated by decreasing the slenderness ratio and increasing the diameter–thickness ratio. According to the test results, the model predicting the compressive bearing capacity of the original bamboo column was proposed considering the slenderness ratio and diameter–thickness ratio, and it was indicated that the proposed model can provide satisfactory predictive results.

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“…However, the bamboo species has several technical challenges such as geometric and mechanical inconsistency along the longitudinal section [22,23]. e bamboo was facing natural resistance deterioration in less than 24 months [24], and it was normally decaying in about 4 years if applied outdoor without any treatment [25,26].…”

Section: Introductionmentioning

confidence: 99%

Failure Mechanisms of Structural Bamboo Using Microstructural Analyses

Chahrour

Hosen

Goh

et al. 2021

Advances in Materials Science and Engineering

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Bamboo is deemed an emerging constructional material with promising application projections due to the reliable natural properties and advantageous structural characteristics. However, there is a lack of systematic studies on the mechanical characteristics of the bamboo species from a microstructural scale. Hence, this paper investigated the primary mechanical properties of the bamboo specimens (Dendrocalamus asper) with further microstructural analysis on the bamboo failure. The direct tensile strength of bamboo specimens was about 226.45 MPa, while the final splitting tensile modulus was found to be 2.88 MPa. Microstructural characterisation of the failed tensile specimens indicates that fibre debonding is the main failure mechanism under tensile conditions. On the other hand, splitting and end bearing failure were found on compression test specimens. In addition, nanoindentation tests were carried out on different cell structures to articulate the hardness and Young’s modulus. The elastic modulus of the fibre cell walls is three times that of the parenchyma cell walls, yet the hardness values are comparable. This confirms that the specimen failure of previous macromechanical testing is due to crack propagation along the parenchyma cells, instead of the cell walls. Based on the experimental studies discussed in this paper, the conclusion can convey a positive message regarding the ability of bamboo as a primary sustainable substitute for conventional construction materials.

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Digital analysis of the geometric variability of Guadua, Moso and Oldhamii bamboo

Cited by 30 publications

References 23 publications

Sustainable Architecture Creating Arches Using a Bamboo Grid Shell Structure: Numerical Analysis and Design

Sustainable Architecture Creating Arches Using a Bamboo Grid Shell Structure: Numerical Analysis and Design

Influence of slenderness ratio and sectional geometry on the axial compression behavior of original bamboo columns

Failure Mechanisms of Structural Bamboo Using Microstructural Analyses

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