【摘要】 根据锚固金属杆的支护、加固机理,构建了锚固体系模型,并由导波的传播特性与锚固体系各交界面为刚性锚固联结的假设,推导出了轴对称导波在柱状锚固复合体系中传播的频散方程;根据锚固体系中导波的几何频散特性,利用M SC/NA STRAN有限元软件,对导波的频散现象进行了数值模拟分析,得出了锚固体系中反射波形的拉平现象.更多还原

【Abstract】 Based on the supporting and reinforcing mechanism of metal bars in the anchoring system,an anchoring system model is founded.From the propagation characteristics of guided waves and the hypothesis of anchoring system interfaces with rigid coupling,the paper concludes the frequency equation of axisymmetric guided waves spreading in a three-layered cylindrical composite structure.And based on the geometry dispersion characteristics of guided waves through bonding metal bars,the guided waves dispersion phenomena is simulated by a finite element software MSC/NASTRAN and the conclusion is drawn that the leveling phenomena of reflection waveforms exist in the anchoring system.更多还原