预应力锚索锚固段应力有限元分析

目前，在边坡工程中大量使用预应力锚索，锚固段是锚索结构受力的主要部分，锚固段在荷载作用下的应力分布和破坏特性还存在较多模糊认识。通过有限元方法对锚固段进行应力分析后得出锚索锚固段的应力分布特性，提出锚索有效锚固段长度应根据砂浆与岩层间的抗剪强度来确定，并应包括在自由段附近出现的局部屈服区或破坏区的长度。

Finite Element Analysis on Stress in Anchorage Section of Prestressed Anchor Cable

At present, prestressed anchor cable is widely used in slope engineering. The anchorage section is the main part of the cable structure that is stressed, however, under action of load, there are many fuzzy understandings of the stress distribution and failure characteristics within the section. This paper, through finite element method, carried out stress analysis in relation to the anchorage section, obtained the characteristics of the stress distribution, and then proposed that the effective length of the anchorage section of the cable shall be according to the shear strength between the mortar and rock stratum and include the length of local yield or failure section that occurs near to the free section.