Biaxial compressive test apparatus,test techniques and test results of rock materials are reviewed in the paper,and pointed out shortcomings such as most current failure criteria ignore the affection of intermediate principal stress,samples too small to assess the scale effects and the friction between the loading platen and sample which affects the failure mode of sample.
综述岩石双轴压缩研究的试验方法、试验设备和研究成果,指出大部分现有的破坏准则忽视了中间主应力的影响,选用试件尺寸太小以致无法充分考虑尺寸效应,加载头与试件受压面之间存在的摩擦力影响试件破坏形态。
The peak value of strength increases with the intermediate principal stress and the maximum of increase is 65.
结果表明:峰值强度(σ1)随着中间主应力(σ2)的增加有所提高,峰值强度的最大增加量达到65。
Accordingly,the formula of active earth pressure considering the effect of the intermediate principal stress under plane strain condition is proposed.
在此基础上,得到了考虑中间主应力影响的主动土压力计算公式。
This formula can give some results obtained by previous formulas,and a series of new results which can consider the intermediate principal stress effect.
这些新结果可以定量考虑岩石的中间主应力效应,因而能灵活地应用于各类岩石。
The catastrophe and concentration of stresses as well as the stress contributions subsequent to the cav.
本文研究了一种组合不可压超弹性材料圆柱体中空穴的生成与增长问题,得到了这种材料受表面均布拉伸死荷载和轴向拉压共同作用下空穴生成问题的解析解,得到了不同组合情况下圆柱体中空穴生成时的临界载荷及分叉曲线,发现组合材料可以发生右分叉,也可以发生左分叉;给出了空穴生成后的应力分布,并讨论了所存在的应力间断和应力集中问题;通过能量比较分析了解的稳定性,讨论了发生右分叉或左分叉的条件,并分析了材料中预存微孔的增长情况。
The phenomena of the right and the left bifurcations as well as the catastrophe and concentration of stresses are observed.
研究了一种可压超弹性材料组合球体中的空穴生成问题,得到了组合球体在径向拉伸作用下空穴生成时分叉问题的解,包括均匀变形的平凡解和有内部空穴生成的分叉解· 给出了空穴生成时的分叉曲线和球体中的应力分布,观察到了右分叉和左分叉现象及应力间断和应力集中现象· 通过能量的比较分析了解的稳定性·
The catastrophe and concentration of stresses are discussed.
研究了一种不可压Valanis_Landel材料超弹性球体在表面死载荷作用下的球形空穴的分叉问题· 给出了空穴分叉问题的解析解 ,讨论了空穴生成时的应力间断和应力集中问题· 通过能量比较判断了解的稳定性 ,并分析了球体中预存微孔的增长情况
The intermediate principal shear stress influence coefficient was discussed and the effect on active earth pressure and its parameters were investigated.
基于双剪统一强度理论,将作用在挡土墙上的土压力视为空间问题,推导出空间主动土压力双剪统一解的简化计算公式,讨论了中间主剪应力影响系数对主动土压力及其参数的影响,并与已有文献的实例进行对比分析。
the influence of intermediate stress
中间主应力影响系数
Earthquake space distribution and its relationships with main faults,deep structure and stress field in Northeast China
中国东北地区地震空间分布与主要断裂带、深部构造及应力场关系
The shear stress in interver tebral disc mainly distributed in fibrous rings.
②椎间盘的剪切应力主要分布在纤维环。
Analysis of Space Stress in Anchorage Area of Main Pylon of Danlahaihe Bridge
丹拉海河大桥主塔锚固区空间应力分析
Three Dimensional Stress Analysis of Main Girder with Twin-Box Cross Section Used in Cable-Stayed Bridge;
斜拉桥双箱单室箱形主梁的空间应力分析
CHARACTERISTICS OF EXPONENTIAL STRENGTH CRITERION OF ROCK IN PRINCIPAL STRESS SPACE
岩石指数型强度准则在主应力空间的特征
Harmony and Intersubjectivity--The comparative explanation to the relation of subjects between Chinese and Western;
“中和”与“主体间性”——对主体之应然关系的比较阐释
The Thermal Stress Analysis of the Continuous Casting Tundish and the Academic Research of Its Deformation
中间包热应力分析及其变形机理研究
Effects of intermediate principal stress parameter on deformation behavior of sands under cyclic rotation of principal stress axes
中主应力系数对应力主轴循环旋转条件下砂土变形特性的影响
To Evaluate the Teachers Capability with the Principal Ingredient Analysis Method;
主成分分析在教师能力评估中的应用
The Application of Initiative in the Teaching of English Listening;
"主动性"教学在英语听力教学中的应用
DYNAMIC RESPONSE OF INITIALLY STRESSED MODERATELY THICK PLATES WITH FOUR FREE EDGES RESTING ON TENSIONLESS ELASTIC HALF-SPACE FOUNDATIONS
无拉力弹性半空间地基上预应力四边自由中厚板的动力响应
The structure of pluralistic power of England in medieval times and the origin of mediate democracy;
中世纪英国多元权力社会结构与间接民主起源
Research on Intermediate Host of Schistosoma Japonicum-Oncomelania Hupensis Population Dynamic
日本血吸虫中间宿主-钉螺的螺口动力学研究
Modification of Gudehus-Bauer hypoplastic model considering medium principal stress
考虑中主应力效应Gudehus-Bauer亚塑性模型的改进
Rejection and Adoption: Catholicism s Coping with Chinese Popular Religion in the Period from the End of Ming Dynasty to Opium War;
拒斥与吸纳：天主教对中国民间信仰的应对
Application of Alarm and Time Calibration in Main Station and Secondary Station
主从式多机通信中报警与时间校准的应用
Between the Local Force and the Central Authority--Analyzing Shao Lizi s power in Gansu;
在地方势力与中央权威之间——邵力子主政甘肃透析
