Essentially the main mechanism of deformation and failure of rock mass induced by earthquake is the coupling effect of shear stress and excess static pore water pressure accumulation. 地震作用导致岩体变形破坏的主要机制是剪应力积聚和超静孔隙水压力累积效应的耦合作用。
The analytical results show that the failure plane by anisotropic strength criterion cannot coincide with the maximum shear stress plane. 分析结果表明,岩体在各向异性强度准则下的破坏面不一定与最大剪应力面重合;
According to result of calculation, three failure types are obtained by analyzing the stress and strain of shaped steels, that is beam failure type, mixed failure type and shear failure type. 根据有限元计算结果,对型钢和混凝土的应力应变进行分析,得到了节点的三种失效模式:梁铰型、混合型和节点核心区剪切型。
And the phase of surface-collapse is a sudden varying process of surface ground soil failure and collapsing caused by the enlarging of critical soil-hole, in which the soil failure follows shear failure or tensile failure, the different failure style will causes the different shape collapse pit. 地表塌陷阶段是土洞扩张导致地表土体破坏塌落的突变过程,土体破坏为剪切破坏或拉张破坏,不同的破坏方式将在地表形成不同形状的塌坑。
On the basis of the knowledge of these stress redistributions, the tensile failure mechanism and strengths of notched cross-ply laminates were studied by using a micro-statistical fracture theory. Consequently, the relation between residual tensile strength and interfacial shear strength was obtained quantitatively. 在此基础上,采用细观统计破坏理论,研究了割口正交叠层板的拉伸破坏机理和强度,定量获得了残余拉伸强度与界面剪切强度的关系,所得结果与现有实验吻合较好。
In order to study the shear strength of steel-enclosed concrete members, this paper gives the process of shear failure of steel-enclosed concrete members by investigating the experiments, and studies the principle of shear resistance. 为了研究外包钢混凝土构件的剪切强度,本文根据试验结果,分析了外包钢混凝土构件的受剪破坏过程,且对其抗剪机理进行了研究。
Characteristics of rock strength and failure under triaxial compression analyzed by twin shear theory 三轴压缩下岩石强度与破坏面角度的双剪理论分析
The results show that the safety factor and the failure surface by shear strength reduction method is fairly close to the result of traditional limit equilibrium method. 与传统极限平衡法的计算结果进行对比,发现得到的安全系数非常接近。
Related to the dynamic failure of structural members struck by projectiles, this paper studies the possibility of the shear failure of a cantilever beam with an attached mass block at the tip under impulsive loading. 以飞射物撞击构件引起破坏为工程背景,研究端头带有质量块的悬臂梁受到冲击载荷作用后发生剪切失效的可能性。
The failure modes by shear of recycled aggregate concrete beams without stirrups are similar to the natural aggregate concrete beams without stirrups. Three failure types of recycled aggregate concrete beams are diagonal tension 、 shear-compression and diagonal compression. 再生混凝土无腹筋梁的破坏形式与普通混凝土无腹筋梁的破坏形式并无本质区别,仍然是斜拉破坏、剪压破坏、斜压破坏三种破坏形态。
It is found that the failure mechanism and the criterion may be decided by relative interface strength to the matrix strength and the interlaminar shear strength can be increased with increasing properly matrix strength and interface strength. 结果表明界面粘接强度和基体开裂强度的相对大小决定了单向层合板面内剪切破坏的机理及其相应的破坏准则,适当增加基体开裂强度和增加界面粘接强度都能增加层合板的面内剪切强度。
The final failure mode of the model is tension failure of perimeter columns and bottom of core wall on the tension side caused by overturning moment, and the story shear failure mode was not found. 结构未发生层剪切破坏,最终破坏模式是在倾覆力矩作用下底部核心筒受拉墙肢及受拉侧外框柱拉断。
The brittle failure, bending failure and joint failure are numerically developed, which the brittle failure is dominated by shear failure. 分别模拟了砌块墙体的弯曲破坏、脆性破坏和联合破坏,其中脆性破坏主要以剪切破坏为主。
Meanwhile, the compression-shear failure laws of RCC were analyzed and described by twin shear strength theory, and that were very close to data what measured from experiment. It reflected the actual compression-shear laws of RCC. 同时,利用双剪强度理论分析和描述了碾压混凝土压剪强度破坏规律,其与试验测得数据非常接近,反映了碾压混凝土的实际压剪强度规律。
Two kinds of failure of stratum, i.e., the submit induced by shear, and the failure induced by tension, were considered in the construction of constitutive relations. A function which describes the state of stratum at a point is defined. 在建立本构关系时,定义了描述材料变形状态的函数,考虑了两种破坏形式,即拉伸破坏和剪切屈服,并考虑了变形状态之间的转换。
Joints failure mainly includes matrix failure and fiber-matrix shear failure. In the three failure modes of composite materials, matrix failure is greatly influenced by temperature, whereas fiber-matrix shear failure and fiber failure are not affected nearly by temperature. 接头破坏主要以基体失效和纤维基体剪切失效为主,在复合材料的三种失效模式中,基体失效受温度影响较大,纤维基体剪切失效和纤维失效基本不受温度影响。
These appearances such as stiffness degrading, peak loads declines, yield displacement increases etc. are more obviously while the members are failure by shear. 这些现象主要表现为:刚度下降速度加快,峰值承载力下降,屈服位移增大等等,且构件为受剪破坏时,现象更加明显。