This paper analyses the mechanics characteristic of the anchorage device with clamping piecesduring the stressing and anchor stages. And several principles for anchorage design are proposed.

• 通过对夹片锚锚具组装件在张拉锚固各个阶段的锚固受力性能进行分析，提出了夹片锚设计除尺寸满足强度要求、尽量小巧外尚应遵循的几条原则。