By employing the shear lag theory, the basic equations of interfacial mechanics for the elastic zone and the plastic zone are established respectively.
利用界面应力剪滞理论，分别建立弹性区和塑性区的界面力学基本方程。
2
The method adopted in this paper is definite in mechanical concept, and it is the extension of elastic analysis, it can be widely used in shear lag effect analysis of cracked continuous box girder.
本文方法力学概念明确，是其弹性分析适用范围的拓展，可广泛应用于连续箱梁开裂后的剪力滞效应分析。
3
One simplified mechanics model based on elastic cylinder theory and shear lag model is proposed.