关键词: 压力型锚索, 锚索预应力, 蠕变, Mindlin问题

Abstract: In order to analyze anchorage mechanism of pressure-type anchor cable theoretically and precisely, the prestress equation of anchor cable were derived based on the coupling effect of anchor cable prestress and soil creep. Pressure stress expression and shear stress expression of anchor cable mortar were derived based on coupling effect and numerical solution of Mindlin. A case was analyzed under the coupling effect of anchor cable prestress and soil creep. The results showed that the prestress of anchor cable and stress peaks on mortar body attenuated and stabilized, showing an inverse power function change over time. There was a positive correlation between the aspect ratio of the plate and the pressure stress peak, and a negative correlation between the aspect ratio of the plate and the shear stress peak, and there was a positive correlation between Poisson ratio and stress peak. The theoretical research on anchorage mechanism of pressure anchor cable was enriched by this study, providing a theoretical basis for the slope anchorage design.

Key words: pressure-type anchor cable, anchor cable prestress, creep, Mindlin solution;