In laboratory experiment of rocks with 3 different axial stresses shear fractures have been found within the very tiny ductile shear zones.
岩石应力-应变实验表明,在中等载荷(等于或大于岩石蠕变极限)作用下,岩石蠕变最终可导致破裂;三轴差应力实验后的试件中,多见极小的韧性剪切带中存在剪破裂;研究发现,糜棱岩并不一定有利于后来断层的叠加,然而二者共存一处的现象却十分普遍;牵引褶皱和剪切断层的应变速率差别极大,只能先牵后断。
An asymmetric and conjugate low_angle shear fracture system is identified in the multi_phase complex fracture systems within the rock mass of the Three Gorges dam region, with the help of the rock frictional rheology theory and the structural analytical method.
在岩石摩擦流变学理论指导下 ,运用构造解析方法 ,在三峡坝区岩体内多期的、复杂的破裂系统中 ,识别出一个不对称的共轭低缓角度剪破裂系统 。
The compression-shear failure of steel fiber reinforced concrete(SFRC) was studied by varying compressive stress and steel fiber content.
通过改变压应力和钢纤维掺量,研究了钢纤维混凝土的压剪破坏,结果表明:钢纤维混凝土压剪破坏后具有明显的材料软化特征,可用双线性剪切软化曲线表示;钢纤维混凝土压剪强度与其压应力和钢纤维掺量有关,但该两者的增强效果并不叠加。
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