通过对 LVL 木纤维复合材料进行温度为20~225℃下的静态抗压测试,研究了其抗压力学性能随温度的变化.结果表明,随着温度的增加,LVL木纤维复合材料的抗压强度、抗压弹性模量均有显著下降.当温度升至225℃时,LVL木纤维复合材料的抗压强度、抗压弹性模量分别为室温20℃的22．3％、22．2％.根据回归分析,提出了 LVL 木纤维复合材料顺纹抗压强度与温度的关系模型,该模型计算的剩余顺纹抗压强度与实验结果吻合较好.
The influence of temperature,in a range from 20 to 225 ℃,on the compression properties of LVL wood composite specimens was determined by static compression test.The result indicated that the compression strength and modulus of elasticity of LVL wood composite specimens decreased significantly with increasing temperature.Compression strength and modulus of elasticity at 225 ℃ compared to room temperature 20 ℃ was respectively 22.3% and 22.2%.A statistical regression-based model was developed and evaluated for predicted the strength loss of LVL composite wood as a function of thermal exposure temperature.The predicted theoreti-cal results consistently matched the observed values.
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