| 1. | ( 6 ) the biaxial compressive tests of concrete under constant lateral stress are carried out
( 6 )进行了混凝土在不同侧应力和加载速率下的双轴压试验。 |
| 2. | ( 5 ) fatigue tests of concrete specimens under biaxial compression while subjected to constant lateral stresses are conducted
( 5 )进行恒定侧压砼双轴压疲劳试验。 |
| 3. | The effects of lateral stress and loading rate on the strength and deformation of concrete under impact loading are discussed systematically
系统地探讨了侧应力和加载速率对混凝土强度、刚度和变形规律的影响。 |
| 4. | However , the interparticle friction did not appear to have a significant effect on the magnitude of the lateral stress developed during the uniaxial compression
然而，颗粒间的摩擦对轴向加载时系统产生的水平应力没有很强的影响。 |
| 5. | Traditionally , the analysis requires a more complicated procedure of specimen making in a pre - defined volume ratio , lateral stress tests , material parameters calculations and finite - element simulation
将此材料系数代入刚塑性有限元解析中，针对压粉压力与相对密度的关系进行计算。 |
| 6. | At last , the finite element method , the strength reduction method and limit equilibrium method , nature slopes and excavation slopes , lateral stress unloading model and axial loading model are analyzed and discussed relatively
最后，就有限元法、强度折减法和极限平衡法，自然边坡与挖方边坡，围压卸荷应力路径模型分析与轴向加荷应力路径模型分析进行了比较讨论。 |
| 7. | The combination of lateral stress and maximum vertical strain denotes the loading history and the reduction of tensile strength and compressive strength denotes the damage of concrete . this work is the theoretical foundation of study on the damage , of concrete due to loading history
分别用经历过荷载历史后混凝土试件的抗压和抗拉强度的劣化来定义其抗压和抗拉损伤，为下文深入研究损伤随荷载历史的发展演化规律奠定了扎实的理论基础。 |
