Influence of Grout’s Poisson Effect on Interfacial Shear Stress for Compression Anchor in Rock Mass

The distribution and magnitude of the shear stress at interface between grout a compression anchor rod rock are strongly affected by Poisson effect. A new analytical equation influence coefficient effect is proposed to quantitatively evaluate on interfacial stress. When considered, from neutral point bearing plate increases, curve becomes steep. However, far low, smooth. Overall, leads more nonuniform rod. larger Poisson's ratio, smaller elastic modulus, diameter lead greater Furthermore, modulus ratio that both affect greatly, but variation in Poisson’s negligible. friction angle