古建筑木材中应力波传播速度的影响因素  

Effects on Stress Wave Speed inside Wood Members in Historical Buildings

作　　者：陈勇平[1] 李华[1] 黎冬青[2] 张涛[2] 

机构地区：[1]中国林科院木材工业研究所国家林业局木材科学与技术重点实验室,北京100091 [2]北京市古代建筑研究所,北京100050

出　　处：《木材工业》2012年第2期37-40,共4页China Wood Industry

基　　金：北京市古建筑木结构安全状况无损检测技术研究与应用(Z090506016609002)

摘　　要：对应力波在古建筑木材中传播速度的影响因素及其影响规律进行了检测和分析,目的是找出各种因素变化与应力波扫描图像之间的关系,从而更好地判定木材内部缺陷的位置和面积。研究表明:含水率对应力波传播速度影响显著;在相同含水率下,应力波径向传播速度大于弦向,其传播方向偏离髓心越远,传播速度越小;树种和年代对应力波传播速度也有影响。The authors studied the effect of moisture, species, and duration of service on stress wave speed in wood members located in historical buildings. The results showed that wood sample moisture content had a considerable effect on stress wave speed. The speed decreased when moisture content increased. Stress wave speed was found to be higher in the radial direction than in the tangential direction at the same moisture content. It was also found that species and duration of service also affected stress wave speed.

关 键 词：古建筑 木材 应力波速度 含水率 传播方向 

分 类 号：TU531.1[建筑科学—建筑技术科学]