The normal residual stress at interface is great, which can result in the interface de-bounding.
界面处残余法向应力较高，可能造成界面脱粘。
Under the condition of low compactness of sand as well as low normal stress, the thickness of geogrid-soil interface decreases with increase of normal stress, exhibiting negative linear relationship.
在砂土密实度及法向应力较低情况下，筋土界面厚度随法向应力的增大而减小，两者呈一负相关的线性关系。
The main difficulty is to find a test method with simple specimen shape and loading style to cause different interface stress modes, that is, normal stress and shear stress dominated modes.
测量界面强度的主要困难在于寻求一种便于试验的试件形状和加载方式，使得界面上能够产生不同的应力状态，即在不同的剥离应力和剪应力比的状态下发生破坏。
The main difficulty is to find a test method with simple specimen shape and loading style to cause different interface stress modes, that is, normal stress and shear stress dominated modes.
测量界面强度的主要困难在于寻求一种便于试验的试件形状和加载方式，使得界面上能够产生不同的应力状态，即在不同的剥离应力和剪应力比的状态下发生破坏。
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