Mechanical properties of energy sustainable round bamboo - Phosphogypsum composite floor slabs

To establish the constitutive model of original bamboo, the tensile and compressive tests along the grain of original bamboo were investigated. The original bamboo was graded according to the elastic modulus, and a stress-strain constitutive model of original bamboo was proposed. The results of the study show that the tensile failure mode of original bamboo along the grain is brittle failure, and the compression along the grain is ductile failure. The bamboo was divided into three grades I, II, and III, and the proportion of II and II was more than 80%. A linear constitutive model was used for tension along the grain of original bamboo, a “three-fold” model was used for simplified constitutive model for compression along the grain, and the Sargin model was used for accurate constitutive model. The classification method proposed in this paper can result in the efficient utilization of bamboo resources, and the proposed constitutive model can promote the analysis and engineering application of original bamboo architecture.

Section: Introductionmentioning

confidence: 99%

Stress-strain constitutive models along the grain of original bamboo based on classification

Cui,

Jiao,

Tong

et al. 2024

“…It is conducive to the development of ecological architecture and has great significance for the realization of sustainable development strategy. However, due to the biological characteristics of bamboo, its heterogeneous size, moisture content, poor durability, stress direction, and height to diameter ratio can all lead to different mechanical properties (Made Oka et al 2016;Masood and Khan 2017;Tian et al 2018;Skuratov et al 2021;Zhou et al 2023), which leads to complications in the application of bamboo structure in practical engineering, requiring a lot of bamboo performance testing time and cost.…”

Section: Introductionmentioning

confidence: 99%

Relationship between mechanical properties and height-diameter ratio of moso bamboo

Yang,

Yuan,

2024

Systematic tests of longitudinal compression, bending, longitudinal shear, and longitudinal tensile strength of bamboo were conducted to study the variation of mechanical properties and the height-diameter ratio of bamboo. The predictive relations of mechanical properties and height-diameter ratio were fitted by linear regression analysis. The results showed that the mechanical properties of longitudinal compression, bending, longitudinal shear, and longitudinal tensile strength of bamboo increased with the increase of the height-diameter ratio. In this paper, the method of deducing the relationship between mechanical properties and height-diameter ratio of bamboo through the linear fitting relationship between mechanical properties and height-diameter ratio was shown to have high applicability and accuracy for bamboo. This paper has a certain reference value for the evaluation of mechanical properties of bamboo and has a certain practical value for reducing the testing cost.

“…Liu et al (2022) analyzed the relationship between the mechanical properties of bamboo and its height and proposed a prediction model for the mechanical properties of bamboo. Zhou et al (2023) developed a new type of raw bamboo-phosphogypsum composite floor, carried out experimental research and theoretical analysis on the composite floor, explored the failure mechanism of the composite floor, and put forward the design calculation method of the composite floor. Tian et al (2019) carried out experimental research on sprayed lightweight composite mortar-original bamboo composite beams, analyzed the failure mechanism of composite beams, studied the influence of parameters on the mechanical properties of composite beams, and put forward a theoretical calculation method.…”

Section: Introductionmentioning

confidence: 99%

Design value of tensile strength of raw bamboo

Cui,

Jiao,

Tong

2023

Bamboo has the advantages of a short growth cycle, good mechanical properties, energy savings, and environmental protection. It is regarded as a new building material with great development potential and application prospects. However, current research on the design values of raw bamboo materials is lacking. In this study, the design value of tensile strength of raw bamboo material was determined by a tensile test of the raw bamboo material, and the statistical values of the tensile strength and elastic modulus of the raw bamboo material were obtained. The standard value and resistance uncertainty statistical parameters of the tensile strength of the raw bamboo material were determined. Considering different load combinations and load effect ratios, the relationship between the reliability index and the resistance component coefficient and the optimal resistance partial coefficient under different load combinations were obtained, and the design value of the tensile strength of the raw bamboo material was obtained.