利用双剪应力原理对拉压性能不同材料圆环的极限压力进行了分析 ,并开发一套实验装置 ,对不同压实度下重塑黄土的抗拉强度进行了测试。建立了土体抗拉强度和干密度之间的关系。结果表明 ,实验数据稳定可靠 ,散布小 ,重复性好 The ultimate pressure of ring with different material properties was studied by using the principle of double shear stress. An experimental device was developed to test the tensile strength of remolded loess under different compaction degrees. The relationship between soil tensile strength and dry density was established. The results show that the experimental data is stable and reliable, scattered small, good repeatability