在一定范围内增大搭接长度，可以减小接头中焊点边缘和搭接区端部的应力和应变集中；

When the epoxy based adhesive is adopted, normal stress and strain at edge of overlap region increase with the increase of adhesive layer thickness, while the shear stress and strain decrease;

测定了被粘物破坏面的显微硬度并考察了胶层厚度、搭接长度变化时的情形。

The microhardness of the surface layer of the adhesive is measured and the effects of thickness of adhesive and lap lengths are alsoanalyzed.

对12根混凝土短柱采用不同粘贴方法和搭接长度进行试验研究。

Trial research has been made for 12 concrete short pillar through taking different sticking methods and connecting length in this paper.

证明了搭接长度的安全值，并提出了其建议值，为碳纤维材料在加固技术中的应用提供了经验积累。

A safe value of the connecting length is proved and the suggestion value is given. It will provide the experience for the application of the reinforcing technique for the carbon fiber material.