方竹材料基础力学性能试验研究
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1.西南林业大学土木工程学院;2.西南林业大学材料与化工学院;3.云南省林业调查规划院资源调查研究中心

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TU366

基金项目:

2022年云南省中青年学术和技术带头人后备人才项目(202305AC160074),云南省林草联合专项(2024BC006)


Basic Mechanical Performance Test of Square Bamboo Material
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1.School of Civil Engineering,Southwest Forestry University;2.School of Materials and Chemical Engineering,Southwest Forestry University;3.Resource Survey and Research Center of Yunnan Forestry Survey and Planning Institute

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    摘要:

    目前竹类研究主要以毛竹等大径级竹材为研究对象,方竹及小径级竹材的研究与应用较少。以竹材物理力学性能试验方法为依据,对3~5 年生的111 个昭通方竹片状试样进行了力学试验,测定了拉压强度、弹性模量等参数。基于试验数据,确定了强度概率分布并验证了其分布特性。结合木结构研究成果与可靠度极限状态设计法,得出了方竹的强度标准值和设计值,并通过与毛竹、落叶松等材料的对比,验证了其可行性。针对不满足规范要求的顺纹抗压强度设计值,进行了可靠度指标修正。本研究丰富了小径级竹材的力学性能数据库,也为方竹的进一步研究与应用开拓了新的方向。

    Abstract:

    At present, the research on bamboo mainly focuses on large-diameter bamboos such as moso bamboo, and the research and application of square bamboo and small-diameter bamboos are rare. Based on the test method of physical and mechanical properties of bamboo, the mechanical tests were carried out on 111 Zhaotong square bamboo flake samples born in 3~5 years, and the tensile and compressive strength, elastic modulus and other parameters were determined. Based on the experimental data, the intensity probability distribution was determined and its distribution characteristics were verified. Combined with the research results of timber structure and the reliability limit state design method, the strength standard value and design value of square bamboo are obtained, and its feasibility is verified by comparison with moso bamboo, larch and other materials. The reliability index was corrected for the design value of the compressive strength of the grain that did not meet the requirements of the code. This study enriches the database of mechanical properties of small-diameter bamboo, and also opens up a new direction for the further research and application of bamboo.

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引用本文

王旭丹,张庆文,刘春楠,等. 方竹材料基础力学性能试验研究[J]. 科学技术与工程, , ():

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  • 收稿日期:2024-04-19
  • 最后修改日期:2024-05-23
  • 录用日期:2024-06-05
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