竹木材料的低温力学性能研究

陈景轩; 肖岩

doi:10.13204/j.gyjzG23032207

竹木材料的低温力学性能研究

doi: 10.13204/j.gyjzG23032207

陈景轩¹,
肖岩^1,2, ,

1. 浙江大学伊利诺伊大学厄巴纳香槟校区联合学院, 浙江海宁 314400;
2. 浙江大学(宁海)生物质材料与碳中和联合研究中心, 浙江宁海 315600

基金项目:

国家自然科学基金面上资助（51978606）。

详细信息

作者简介:
陈景轩,男,1998年出生,硕士,22071054@zju.edu.cn。

通讯作者:
肖岩,yanxiao@intl.zju.edu.cn。

计量
- 文章访问数: 144
- HTML全文浏览量: 37
- PDF下载量: 7
- 被引次数: 0
出版历程
- 收稿日期: 2023-03-22

Research on Mechanical Properties of Bamboo and Timber at Low Temperature

CHEN Jingxuan¹,
XIAO Yan^{1,2
, ,}

1. Zhejiang University-University of Illinois Joint Institute, Haining 314400, China;
2. ZJU-Ninghai Joint Research Center for Bio-Based Materials and Carbon Neutral Development, Ninghai 315600, China

摘要

摘要: 基于可持续发展的需要，建筑等领域中的竹木材料应用逐渐增加。为探究不同含水率的竹木材料在低温环境下应用潜力，主要研究了两种含水率（绝干状态、气干状态）的厚篾glubam工程竹和SPF规格材（云杉-松-冷杉）在低温环境下（-196~20℃）与经历冻融循环后的抗弯性能。通过静曲试验分别测量了两种材料在低温状态下与经过单次冻融循环后的弹性模量和抗弯强度，旨在为竹木材料在寒冷地区的结构设计提供依据。结果表明：厚篾glubam和SPF在低温环境下的力学强度变化规律较为复杂，但均表现出良好的抗弯性能，其中各组厚篾glubam在-50℃均出现峰值强度，较常温有明显强度提升。相比于含有一定水分的气干材，绝干材的性能变化幅度较小。
- 格鲁斑胶合竹(glubam) /
- 云杉-松-冷杉(SPF) /
- 低温抗弯弹性模量 /
- 低温抗弯强度
Abstract: The application of bamboo and wood materials in construction and other fields are gradually increasing corresponding to the requirements of sustainable development. To explore the potentials of bamboo and timber for various application environments at low temperatures, the bending performance of thick-strip glubam and SPF (spruce-pine-fir) with two moisture contents (oven-dried and air-dried) at conditions of low temperature (-196 to 20℃) and freeze-thaw cycle were examined. The elastic modulus and strength of rupture of glubam and SPF were measured respectively through static bending tests. The results showed that the variation of mechanical properties of thick-strip glubam and SPF at low temperatures was complicated, but both showed good bending performance. The peak strength of thick-strip glubam appearred at -50℃, which was higher than that at room temperature. Compared with air-dried materials, the strength variation amplitude of oven-dried materials was smaller.
- glubam /
- spruce-pine-fir (SPF) /
- low-temperature elastic modulus /
- low-temperature strength of rupture

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