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利用空心圆柱动扭剪仪研究初始主应力偏转角α0 对一种砂砾料动强度、残余应变发展的影响。试验结果表明初始主应力偏转角α0 对土的动强度、残余孔隙水压力及残余应变的发展都具有不可忽视的重要影响。随着α0 的增大 ,动强度明显降低 ,残余孔隙水压力减小 ,残余应变发展速率加快
The influence of the initial principal stress deflection angle α0 on the dynamic strength and residual strain of a gravel material was studied by using a hollow cylindrical dynamometer. The experimental results show that the initial principal stress deflection angle α0 has an important influence on the dynamic strength of soil, the residual pore water pressure and the development of residual strain. With the increase of α0, the dynamic strength decreases obviously, the residual pore water pressure decreases and the residual strain develops faster