Light filled core bamboo tube structure

Abstract

The invention relates to a light filled core bamboo tube structure. The light filled core bamboo tube structure comprises a light filled core (1), a bamboo tube (2) and reinforced bamboo belts (3), wherein a cavity of the bamboo tube (2) is provided with the light filled core (1), the bamboo tube (2) is formed by mutually compounding a longitudinal bamboo band (21) and a bamboo coiled material (22); and the reinforced bamboo belts (3) are adhered to the outer wall of the outer wall of the bamboo coiled material (22) in a spiral or loop type internal winding manner so as to form included anglesof (-45)-(45) degrees or 0 degree with the direction of the cross section with the bamboo tube (2). According to the light filled core bamboo tube structure, a lateral support force is provided for the tube wall of the bamboo tube from side to outside by the light filled core, so that the inward local buckling of the bamboo tube is prevented or delayed, and the bearing force of the bamboo tube isgreatly increased; and the annular constraint force is provided for the light filled core by the bamboo tube, so that the stressed bearing capacity of the light filled core is improved, and the transverse deformation of the light filled core is reduced. The light filled core bamboo tube structure is suitable for components such as piles, columns, piers and beams in newly built structures.

Description

technical field [0001] The invention particularly relates to a composite structure, especially a lightweight core-filled bamboo tube structure, which belongs to the technical field of civil engineering structures. Background technique [0002] Bamboo is a green building material with fast growth, short production cycle and excellent mechanical properties. Natural raw bamboo has a hollow section, which can be used in building structural components within a certain range, but its section is small, bearing capacity is low, and section rigidity is small. It is difficult to apply to structural members with large loads and large spans. Using natural bamboo as raw material, using advanced composite and recombination technology to process bamboo into modern bamboo engineering materials with different sizes and specifications, it can meet the material requirements of modern load-bearing components to a certain extent. However, most of the current structural members with bamboo as th...

AI Technical Summary

Problems solved by technology

However, most of the current structural members with bamboo as the base material are solid cross-sections. Bamboo members with solid cross-sections lead to their own weight, unreasonable use of materials, and large amounts of materials, which waste resources and increase application costs.

[0003] In order to improve the mechanical properties of bamboo components such as bearing capacity and stiffness, and reduce the amount of materials used, the conventional method is to add reinforcement materials in the cross-section. For example, Chinese patent 02277578.1 discloses a new type of bamboo fiber plastic composite board, which consists of two or more layers. Bamboo fiber plastic composite material plate layer and metal mesh layer or glass fiber mesh layer between two layers of plate layers, which use metal mesh or glass fiber mesh to strengthen bamboo; winding bamboo into bamboo pipe, currently the main Applied in the field of pipelines, for example, Chinese patent 201610229360.8 discloses a super-large-diameter bamboo winding composite pipe, which can be applied to various engineering pipelines, but is not suitable for structural load-bearing components, and is prone to inward buckling damage

Simply processing the bamboo structure into a hollow section undoubtedly saves material, but the tube wall is easy to buckle, the bearing capacity is low, and the section rigidity is insufficient, which makes it difficult to meet the use requirements of the structure

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