Axial compressive behaviour of sprayed composite mortar–original bamboo composite columns

Tian, Li-min; Kou, Yue-feng; Hao, Jiping

doi:10.1016/j.conbuildmat.2019.04.234

Cited by 88 publications

(25 citation statements)

References 23 publications

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“…Currently, increasing attention is being given to the reinforcement of timber structures, and many scholars have proposed reinforcement methods for timber structures [ 1 , 2 ]. The TLC composite beam is a kind of structural component formed by combining lightweight concrete and timber, and it is not only used for new structures but also for reinforcement of existing timber structures [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. The TLC composite beam consists of a lightweight concrete flange supported by a timber web, which is attached by different types of connectors.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Timber−Lightweight Concrete Composite Beams with Ductile Bolt Connectors

Wei

Chen

et al. 2021

Materials

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A timber–lightweight−concrete (TLC) composite beam connected with a ductile connector in which the ductile connector is made of a stainless−steel bolt anchored with nuts at both ends was proposed. The push−out results and bending performance of the TLC composite specimens were investigated by experimental testing. The push−out results of the shear specimens show that shear–slip curves exhibit good ductility and that their failure can be attributed to bolt buckling accompanied by lightweight concrete cracking. Through the bending tests of ten TLC composite beams and two contrast (pure timber) beams, the effects of different bolt diameters on the strengthening effect of the TLC composite beams were studied. The results show that the TLC composite beams and contrast timber beams break on the timber fiber at the lowest edge of the TLC composite beam, and the failure mode is attributed to bending failure, whereas the bolt connectors and lightweight concrete have no obvious breakage; moreover, the ductile bolt connectors show a good connection performance until the TLC composite beams fail. The ultimate bearing capacities of the TLC composite beams increase 2.03–3.5 times compared to those of the contrast beams, while the mid-span maximum deformation decrease nearly doubled.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Timber−Lightweight Concrete Composite Beams with Ductile Bolt Connectors

Wei

Chen

et al. 2021

Materials

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“…Yu et al [28] built four full-scale bamboo scaffolds to examine the axial buckling behavior of bamboo columns in bamboo scaffolds. Tian et al [29,30] investigated the bearing capacity of original bamboo columns and sprayed composite mortar-original bamboo composite columns. The results showed that the failure mode of slender columns was buckling.…”

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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“…Green building materials such as timber [1,2], bamboo [3][4][5][6] have attracted more and more scientists' interests. Many engineered bamboo products [7][8][9][10][11] were invented.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Stress Strain Relationship Models for Bamboo Scrimber

Li¹,

Zhang²,

Qiu³

et al. 2020

Journal of Renewable Materials

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In order to investigate the basic mechanical properties and stress strain relationship model for bamboo scrimber manufactured based on a new technique, a large quantities of experiments have been carried out. Based on the analysis of the test results, the following conclusions can be drawn. Two main typical failure modes were classified for bamboo scrimber specimens both under tension parallel to grain and tension perpendicular to grain. Brittle failure happened for all tensile tests. The slope values for the elastic stages have bigger discreteness compared with those for the specimens under tensile parallel to grain. The failure modes for bamboo scrimber specimens under compression parallel to grain could be divided into four. Only one main failure mode happened both for the bending specimens and the shear specimens. With the COV values of 28.64 and 25.72 respectively, the values for the strength and elastic modulus under tensile perpendicular to grain have the largest discreteness for bamboo scrimber. From the point of CHV values, the relationship among the mechanical parameters for bamboo scrimber were proposed based on the test results. Compared with other green building materials, bamboo scrimber manufactured based on a new technique has better mechanical performance and could be used in construction area. Three stress strain relationship models which are four-linear model, quadratic function model, and cubic function model were proposed for bamboo scrimber specimens manufactured based on a new technique. The latter two models gives better prediction for stress strain relationship in elastic plastic stage.

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Axial compressive behaviour of sprayed composite mortar–original bamboo composite columns

Cited by 88 publications

References 23 publications

Experimental Study on Timber−Lightweight Concrete Composite Beams with Ductile Bolt Connectors

Experimental Study on Timber−Lightweight Concrete Composite Beams with Ductile Bolt Connectors

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

Mechanical Properties and Stress Strain Relationship Models for Bamboo Scrimber

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