应力波和阻抗仪技术在古建筑木结构检测中的应用

Application of stress wave and resistograph techniques in the wood structure inspection of ancient buildings

采用应力波微秒计和阻抗仪对贵州某村落的四栋单体古建筑中部分木构件进行无损检测,获得了古建筑木构件的顺纹动弹性模量、弹性模量残损率、剩余强度和腐朽分布等各项指标。结果表明:联合采用应力波微秒计和阻抗仪可以有效地测定古建筑木构件的腐朽和虫蛀等残损情况。实现了从传统的目测鉴别到定量评价,为古建筑木结构的安全评估、维护和修缮提供理论依据和技术支撑。

Stress wave and resistograph are used in the non-destructive testing for some wooden components from four ancient buildings in a village of Guizhou province. The modulus of elasticity parallel to grain, residual loss rate of the modulus of elasticity, residual strength and decay distribution of ancient wooden structure members are computed. The results show that the combination of stress wave and resistograph are reliable tools to evaluate the decadent and worm damages of wooden members in ancient buildings. As a result, the utilized technics here realize the transition from traditional visual identification to quantitative evaluation and provide the theoretical basis and technical support for the safety assessment, maintenance and repair of ancient timber structures.