高应力下石英砂与不同结构接触面抗剪强度的试验研究

通过对标准石英砂与不同基底的界面剪切特性进行的试验，确定了高应力作用下峰值剪应力、残值剪应力与正应力的数学模型与变化规律。提出高应力作用下石英砂与结构接触面的剪切特性的研究应充分考虑基底材料的刚度大小和土体颗粒的破碎效应。

Experim entalInvestigation of the Shear Strengths between the Quartz Sand and Different Contact Surfaces under High Stress

Through the tests m ade for the shearing features on the interface between the standard quartz sand and differentbases,this paper determ ines the m athem atical m odels and varying rules ofthe peak shear stress,residualshear stress and norm al shear stress under the action of the high stress,and points out that the stiffness of the bases and the fracture effectofthe soilgrain should be taken into fullconsideration in the investigation ofthe shearstrengths between the quartz sand and differentcontact surfaces under the high stress.