Review of connections for engineered bamboo structures

Hong, Chaokun; Li, Hai Tao; Xiong, Zhenhua; Lorenzo, Rodolfo; Corbi, Ileana; Corbi, Ottavia; Wei, Dongdong; Yuan, Conggan; Yang, Dong; Zhang, Huizhong

doi:10.1016/j.jobe.2020.101324

Cited by 57 publications

(32 citation statements)

References 42 publications

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“…International codes for timber were investigated to consider the development of allencompassing bamboo standards and building codes [32]. Technologies of full culm bamboo joints [33,34] and connections of engineered bamboo [35] were reviewed, application challenges and future research potentials were discussed.…”

Section: Introductionmentioning

confidence: 99%

A review of mechanical behavior of structural laminated bamboo lumber

Dauletbek¹,

Li²,

Xiong³

et al. 2021

Sustain. Struct.

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The transition of the construction sector to sustainable development mostly depends on the environmental friendliness of building materials. This, in turn, calls for the development of new, strong, and sustainable materials that would be a worthy alternative for traditional materials, including wood. Over the past decade, laminated bamboo lumber (LBL) has received much attention from engineers, practitioners, and scientists for its attractive mechanical properties, comparable to and in some cases superior to hard and softwood. Moreover, the sustainability of LBL is characterized by its high carbon sequestration, fast time to harvest, high yield, and low energy consumption for processing. However, the behavior of LBL is not yet fully understood, which in turn affects the low awareness and application of the material by practitioners and engineers around the world. Since LBL has a promising future, this article will contribute to a better understanding of its mechanical properties and a more accurate design, taking into account the influencing factors. This article discusses the mechanical properties of three types of structural LBL, namely beams, columns, and sheathing panels. The previous works of researchers on the mechanical properties of structural LBL were reviewed, and thus the most common failure modes, the causes of the destruction of structural elements, and the factors that affect their behavior were discussed and described. This work will serve as a reference for current practitioners and future research.

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Section: Introductionmentioning

confidence: 99%

A review of mechanical behavior of structural laminated bamboo lumber

Dauletbek¹,

Li²,

Xiong³

et al. 2021

Sustain. Struct.

Self Cite

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show abstract

“…For the bamboo structure, there are many types of connections [ 2 , 3 , 4 , 5 ]. Traditionally, tying with natural fiber was the most common approach to connecting the bamboo members, as shown in Figure 1 a.…”

Section: Introductionmentioning

confidence: 99%

Study on Behavior of Steel Hoop Connections for Raw Bamboo Members

Cheng

et al. 2021

Materials

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Bamboo structures have various types of connections, such as bolting and lashing. One crucial issue in bamboo structures is that the connection with bolts and nails has a lower load-carrying capacity associated with the bamboo failure resulting from the bolt or nail invading them. This paper focuses on the connection for raw bamboo members with steel hoops (BHC), of which the two semi-circular steel hoops are fastened to the raw bamboo with high-strength bolts. The sliding friction is controlled by the interfacial pressure, which can be increased by tightening the bolts. A push-out experiment on thirty-six specimens was conducted considering the following two parameters: the different surface conditions of raw bamboo (with or without the epidermis) and the different interfacial pressure. The test results mainly showed the two failure modes of specimens under certain conditions: continuous longitudinal slip after the vertical load reached the peak; and the steel hoop stuck in the bamboo skin after a period of slip. It is found that the sliding friction was controlled by the interfacial pressure, and the difference in the anti-sliding capacity between the epidermal bamboo specimen and the non-epidermal bamboo specimen was magnified with the increase of interfacial pressure. The contact stress on the surface of bamboo is approximately uniformly distributed based on the finite element analyses. The interfacial pressure can be predicted by the torque value of the digital electronic torque wrench and the equations established by mechanical analysis, respectively. Moreover, the design formulae of bearing capacity for BHC under three guaranteed rates (50%, 95%, and 99.9%) were developed based on probability theory, while the fourth design formula was derived by regression analysis. The reliability indices of the four design formulae were up to 0.07, 1.44, 3.09, and 0.97, respectively, and the resistance partial coefficients were suggested accordingly.

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“…Bamboo plants are rich in resources and widely used due to their characteristics of strong photosynthesis and fast growth. Due to the good physical and mechanical properties and processing properties, high strength and good toughness, bamboo has been widely used in high value-added fields such as construction and engineering (Sharma et al 2015;Xia and Sanjayan 2016;Vorontsova 2018;Hong et al 2020;Hu et al 2020). Round bamboo is hollow and a functional biomaterial with a natural multi-level structure (Wegst et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Distribution and migration of moisture in round bamboo in response to microwave drying

Chen

Lian

et al. 2021

BioRes

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Characterized by its light weight, high strength, and good flexibility, round bamboo is a natural functional biomaterial with a multi-level structure. Cracking is a key factor hindering its wider application. Moisture changes cause cracking when the round bamboo is dried. Therefore, studying moisture variations in the drying process of round bamboo can effectively reduce or solve the cracking problem. In this study, microwave drying with computer tomography (CT) imaging technology was used to understand the distribution and migration of moisture in round bamboo in the course of drying. The results indicated that water content has a significant correlation with the CT value, which can be used to achieve rapid determination of water content. The radial water content of samples gradually decreased from bamboo green (outer) to bamboo yellow (inner). The axial water content was high in the middle and low on both ends. As the water content decreased, the axial moisture distribution was consistent. The internode moisture mainly moved from the junction of bamboo yellow and bamboo partition, entered the adjacent cavity, and then gradually moved outward. Thus, the microwave drying method can effectively achieve industrial drying of round bamboo and prevent cracking.

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Review of connections for engineered bamboo structures

Cited by 57 publications

References 42 publications

A review of mechanical behavior of structural laminated bamboo lumber

A review of mechanical behavior of structural laminated bamboo lumber

Study on Behavior of Steel Hoop Connections for Raw Bamboo Members

Distribution and migration of moisture in round bamboo in response to microwave drying

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