文献类型：期刊文献

中文题名：桉木制结构复合材PSL柱的静动态弹性模量

英文题名：Static and Dynamic Elastic Modulus of Eucalyptus Structural Composite Lumber(PSL)Column

作者：钟永[1] 任海青[1] 邢新婷[1] 高黎[1] 李红霞[2]

第一作者：钟永

通信作者：Ren, H.-Q.

机构：[1]中国林业科学研究院木材工业研究所;[2]黄河科技学院建筑系

年份：2013

卷号：16

期号：6

起止页码：998-1003

中文期刊名：建筑材料学报

外文期刊名：Journal of Building Materials

收录：CSTPCD;;EI(收录号：20140317209389);Scopus(收录号：2-s2.0-84891934582);北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：引进国际先进林业科学技术项目(2012-4-29)

语种：中文

中文关键词：结构复合材(PSL);顺纹受压;无损检测;应力波;弹性模量;损伤

外文关键词：structural composite lumber（PSL） ; compression in paralleling to grain; nondestructive test;stress wave; elastic modulus; damage

分类号：TU531.1

摘要：以新型桉木制结构复合材PSL柱为试验对象,进行了应力波无损动态力学性能测试和足尺顺纹受压静态力学性能测试,探讨了PSL柱动、静态弹性模量之间的关系,分析了应力波沿PSL柱斜对角向的传播机理,建立了PSL柱斜对角向动态弹性模量的简化计算模型.结果表明:PSL柱纵向动态弹性模量与宽度方向、厚度方向、斜对角向动态弹性模量的比值分别为11.4,41.9,1.7左右;PSL柱纵向动态弹性模量约为纵向静态弹性模量的1.46倍;受压损伤后PSL柱纵向和斜对角向动态弹性模量均为相应未损伤动态弹性模量的0.84倍左右.PSL柱斜对角向动态弹性模量主要取决于应力波沿纵向、宽度方向、厚度方向传播的距离分量及各方向动态弹性模量的大小.
For new-type eucalyptus structural composite lumber（PSL） column, dynamic elastic modulus was determined by nondestructive stress wave, while the static elastic modulus was determined by full- scale compression in paralleling to grain. The relationship between the dynamic elastic modulus and the static elastic modulus was investigated. By analyzing stress wave propagation mechanism at diagonal direc- tion, a simplified theoretical model was constructed to calculate the dynamic elastic modulus at diagonal di- rection. The results indicate that the ratio of dynamic elastic modulus at longitudinal direction to the that at width direction, thickness direction and diagonal direction are about 11.4, 41.9 and 1.7 respectively. At longitudinal direction, dynamic elastic modulus is about 1. z;6 times higher than static elastic modulus. Both longitudinal direction and diagonal direction, the ratio of damaged dynamic elastic modulus to undam- aged dynamic elastic modulus is about 0.84. Dynamic elastic modulus of PSL column at diagonal direction depends on the distance component and dynamic elastic modulus at longitudinal direction, width direction, thickness direction.