关键词: 锚固段, 荷载传递法, 应力分布

Abstract: The basic equation of anchorage section is derived based on load transfer method. This paper derived the analytical expression of anchorage sections’stress distribution，combining the displacement solution to Kelvin problem. The results show that the bolt body diameter，external load and the ratio of bolt body’s elastic modulus and rock’s shear modulus affected the stress level of anchorage section. The calculation finds that: (i)when bolt diameter bolts up to a certain extent， anchorage section’s maximum shear stress has a rapid increase; (ii)under a higher initial force conditions，the front of anchorage section has a clear stress concentration; (iii) a smaller ratio of bolt body’s elastic modulus and rocks’shear modulus is conducive to uniform the stress distribution of anchorage section.

Key words: anchorage section, load transfer method, stress distribution