Hollow column of high-strength bamboo glulam and its preparation method

Abstract

The invention provides a high-strength glue-laminated bamboo hollow column and a preparation method thereof. The high-strength glue-laminated bamboo hollow column structurally comprises high-strength glue-laminated bamboo side boards I, high-strength glue-laminated bamboo side boards II, low-density glue-laminated bamboo partition boards and self-drilling self-tapping screws, wherein the high-strength glue-laminated bamboo side boards I and the high-strength glue-laminated bamboo side boards II are connected through self-drilling self-tapping screws 4 to form a hollow column body; and the low-density glue-laminated bamboo partition boards in the hollow column body are connected with the high-strength glue-laminated bamboo side boards at intervals of 500 mm through self-drilling self-tapping screws. The invention has the following advantages: the flexural stiffness of the column can be greatly enhanced, the stability, buckling resistance and stretch-bending resistance of the column can be improved, and the column is applicable to common buildings and long-span structures; since self-drilling self-tapping screw connection is employed, the process is simple, the connection is reliable and the quality is easy to control; and the unit weight of glue-laminated bamboo is only about one third of that of concrete, and the cross section of the hollow column saves material as compared with that of a common solid column, so that the glue-laminated bamboo hollow column can reduce the weight of a component, is conductive to resisting earthquakes and saving energy, can reduce the preparation cost and is convenient for assembled structures of buildings.

Description

technical field [0001] The invention relates to a high-strength bamboo glulam hollow column applicable to construction engineering structures and long-span structures and a preparation method thereof, belonging to the field of engineering technology. Background technique [0002] Environmental and resource issues are imminent. Seeking suitable biomass renewable structural materials is a new direction in the field of contemporary civil engineering. More and more architects are turning their attention to bamboo and wood materials. Bamboo and wood buildings have brought people close The warmth of nature. [0003] Contemporary bamboo and wood buildings are no longer limited to small-area houses and ordinary residences. More and more public buildings, long-span buildings, and bridge structures tend to use bamboo and wood materials. Diversity cannot directly meet these needs, and raw bamboo and logs must be industrially processed. However, my country's forest resources, especially...

AI Technical Summary

Problems solved by technology

[0005] However, at this stage, my country’s bamboo and wood structure design theory is not perfect, and the design methods are backward. Under the guidance of sustainable development, under the situation of increasingly scarce labor force, it is very meaningful to develop prefabricated and factory-standardized bamboo structure buildings. At the same time, the large-span More and more structures are emerging, and various types of components suitable for large-span bamboo structures are required. Therefore, it is necessary to analyze and design prefabricated and large-span bamboo structures based on modern structural analysis techniques and structural design principles.

[0006] At present, the prefabricated structure with concrete and steel as the main raw materials has the following disadvantages: (1) heavy weight; (2) inconvenient transportation; (3) the size of the components is determined according to the design requirements, which is not universal, which is not conducive to Standardized production; (4) high energy consumption, high pollution, and relatively high cost; the present invention can effectively improve the above conditions

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