黄土地区全长黏结式锚杆承载力分析研究

Analysis of bearing capacity of wholly grouted anchor in loess region

基于界面本构力学模型的假定,考虑非饱和土体基质吸力的特性,在摩尔-库伦强度准则下,推导出适宜于非饱和土质边坡锚杆的锚固微分方程及解析解。对某一非饱和土质边坡工程进行试算,并对土层锚杆的受力进行分析,分析表明:锚杆轴力和剪应力沿土层锚杆全长分布,并逐渐减小。土层锚杆的破坏由外向内逐步破坏,且锚固体直径对其轴力的分布没有影响。

Based on the assumption interface mechanics constitutive model,considering the characteristics of unsaturated soil matric suction in Moore-Coulomb strength criterion under deduce suitable for unsaturated soil slope anchor bolt differential equations and analytical solutions. On unsaturated soil slope of a spreadsheet works,and soil anchor force is analyzed,the analysis shows that bolt axial force and shear stress distribution along the full length of soil anchor and gradually decreases. The outside-the gradual destruction of soil anchor damage and the diameter of the anchor does not affect its distribution of axial force.