慈竹基重组竹材物理力学性能研究

李豪; 马鑫茹; 夏林; 许莉; 姜永泽; 陈燕; 齐锦秋

doi:10.3724/j.gyjzG24083101

慈竹基重组竹材物理力学性能研究

doi: 10.3724/j.gyjzG24083101

李豪^1,2,3,
马鑫茹^1,2,3,
夏林^1,2,3,
许莉^1,2,3,
姜永泽^1,2,3,
陈燕^1,2,3,
齐锦秋^1,2,3, ,

1. 四川农业大学林学院, 成都 611130;
2. 长江上游森林资源保育与生态安全国家林业和草原局重点实验室, 成都 611130;
3. 长江上游林业生态工程四川省重点实验室, 成都 611130

基金项目:

四川省科技计划项目(2023YFS0393)。

详细信息

作者简介:
李豪,硕士研究生,1813858636@qq.com。

通讯作者:
齐锦秋,教授,博士,主要从事竹基复合材料研究,1092477321@qq.com。

计量
- 文章访问数: 40
- HTML全文浏览量: 4
- PDF下载量: 5
- 被引次数: 2
出版历程
- 收稿日期: 2024-08-31
- 网络出版日期: 2025-04-02

Research on Physical and Mechanical Properties of Bambusa emeiensis Bamboo Scrimber

LI Hao^1,2,3,
MA Xinru^1,2,3,
XIA Lin^1,2,3,
XU Li^1,2,3,
JIANG Yongze^1,2,3,
CHEN Yan^1,2,3,
QI Jinqiu^{1,2,3
, ,}

1. College of Forestry, Sichuan Agricultural University, Chengdu 611130, China;
2. National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Chengdu 611130, China;
3. Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu 611130, China

摘要

摘要: 为丰富重组竹物理力学性能基础数据,推广重组竹在建筑结构中的应用,制备了5种密度(0.8、0.9、1.0、1.1、1.2g/cm³)、2种组坯方式(纵向组坯和纵横组坯)的慈竹基重组竹材,依据LY/T 3194—2020《结构用重组竹》和GB/T 40247—2021《重组竹》测试分析其密度、耐水性、抗弯、抗压、抗拉、抗剪等13个物理力学性能指标。结果表明:重组竹板材实测密度与设定密度之间存在一定差异,纵向板密度偏差在-3.95%~5.89%,纵横板密度偏差在-5.80%~6.22%;纵向板各物理力学性能整体随密度增加逐渐增强,而纵横板强度随密度变化规律不明显,纵向板的吸水宽度膨胀率为0.69%~2.73%,吸水厚度膨胀率为3.27%~6.56%,抗弯强度为194.5~228.2 MPa,抗弯弹性模量为19.03~28.90 GPa,水平剪切强度为10.8~18.5 MPa;纵横板力学强度整体上低于纵向板,但其横纹抗压、顺纹抗剪强度以及吸水宽度膨胀率高于纵向板。综合所测物理力学强度数据,建议在实际应用中使用0.95 g/cm³以上的重组竹以获得更好的强度稳定性。
- 慈竹 /
- 重组竹 /
- 物理性质 /
- 力学性质 /
- 组坯方式
Abstract: To enrich the fundamental data on the physical and mechanical properties of bamboo scrimber and to promote its application in building structures, five densities (0.8, 0.9, 1.0, 1.1, 1.2 g/cm³) and two kinds of assembly methods (longitudinal, vertical and horizontal) of Bambusa emeiensis bamboo scrimber were prepared.According to the standards Structural Bamboo Scrimber (LY/T 3194—2020) and Bamboo Scrimber (GB/T 40247—2021), the study evaluated 13 properties, including density, water resistance, bending resistance, compressive strength, tensile strength, and shear resistance. The results revealed that the measured density varied from the set density in different areas of the bamboo scrimber board. The density deviation of the longitudinal plates was from -3.95% to 5.89%, and the density deviation of the vertical and horizontal plates was from -5.80% to 6.22%. As the density increased, the overall physical and mechanical properties of longitudinal plates improved, although the strength of vertical and horizontal plates did not vary significantly with density. For the longitudinal plates, the water absorption width expansion rate ranged from 0.69% to 2.73%, and the water absorption thickness expansion ratio ranged from 3.27% to 6.56%. The bending strength was between 194.5 MPa and 228.2 MPa, the bending modulus of elasticity ranged from 19.03 GPa to 28.90 GPa, and the horizontal shear strength ranged from 10.8 MPa to 18.5 MPa. The mechanical strength of the vertical and horizontal plates was generally lower than that of the longitudinal plates, while transverse compressive strength, shearing strength parallel to grain and widths welling were higher than those of the longitudinal plates. Based on the measured physical and mechanical strength data, it was recommended to use bamboo scrimber with a density greater than 0.95 g/cm³ to achieve better strength stability in practical applications.
- bambusa emeiensis /
- bamboo scrimber /
- physical properties /
- mechanical properties /
- assembly method

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