木材科学与技术2025，Vol.39Issue(3)：33-40,8.DOI:10.12326/j.2096-9694.2025009
不同温度处理对重组竹横纹冲击力学性能的影响
Effect of Different Temperature Treatments on Impact Mechanical Properties of Bamboo Scrimber in Direction of Perpendicular to Grain
摘要
Abstract
Bamboo scrimber is inevitably subjected to impact loads in addition to the static load.Specifically,after the bamboo-scrimber-framed building is damaged by fire,the structure is loaded with the horizontal impact.The defects in the inherent structure may be amplified under the dynamic condition.The previous study on the mechanical properties of bamboo scrimber perpendicular to grain under the static conditions showed the Hopkinson pressure bar system was used to conduct dynamic mechanical performance tests on specimens at different temperatures under impact velocities of 10 m/s,13 m/s,and 16 m/s,respectively.Experiment results show that when the impact velocity remains constant,the dynamic proportional limit strength of compression,and the dynamic compressive elastic modulus of the bamboo scrimber perpendicular to grain gradually increased as the temperature increased from 20℃to 180℃.However,these properties decreased rapidly when the temperature continues increasing up to 280 ℃.Based on these findings,a formula for calculating the coefficient of influence on the dynamic proportional limit strength of compression and the dynamic compressive elastic modulus of bamboo scrimber perpendicular to grain under different temperatures was proposed,providing a theoretical basis and technical reference for the engineering application of bamboo scrimber components under high temperature and impact coupling.关键词
重组竹/冲击荷载/分离式霍普金森压杆/温度/加载率Key words
bamboo scrimber/impact load/split Hopkinson pressure bar/temperature/loading rate分类
农业科技引用本文复制引用
薛兆丰,盛叶,郭任坤,郭楠,董帅..不同温度处理对重组竹横纹冲击力学性能的影响[J].木材科学与技术,2025,39(3):33-40,8.基金项目
福建省科技厅国家科技项目备案类"秸秆夹芯竹木复合集装箱底板关键技术研究及应用"(2023L3046) （2023L3046）
中建股份科技研发项目"绿色低碳重组竹装配式建筑的关键技术研究"(CSCEC-2022-Z-58). （CSCEC-2022-Z-58）
