1) major principal stress arch
大主应力拱
1.
The major principal stress arch is studied in the backfill in passive critical state.
研究土体被动极限状态时的大主应力拱,给出大主应力拱的曲线方程和被动土压力系数;利用水平层分析法,分析被动土压力的分布规律。
2.
The direct earth pressure should be calculated by analysis of minor principal stress arch while the indirect earth pressure by analysis of major principal stress arch.
可用小主应力拱应力分析计算直接土压力 ,用大主应力拱应力分析计算间接土压力。
2) principal stress arching
主应力拱
1.
Based on Coulomb’s earth pressure theory,assuming the trace of the principal stress arching in the back of rigid retaining wall as parabola,the theory formulae are obtained including the lateral coefficients of active and passive earth pressures and the friction coefficients of horizontal differential elements;then improved formulae of active and passive earth pressures are presented.
基于库仑土压力理论,假定刚性挡墙后主应力拱迹线为抛物线,推导了主、被侧土压力系数和水平微分单元间摩擦系数的理论公式,得到改进的主、被动土压力计算公式。
3) minor principal stress arch
小主应力拱
1.
The direct earth pressure should be calculated by analysis of minor principal stress arch while the indirect earth pressure by analysis of major principal stress arch.
可用小主应力拱应力分析计算直接土压力 ,用大主应力拱应力分析计算间接土压力。
4) Main stress arching circle
主应力拱形圈
5) maximum principal stress
最大主应力
1.
The multi-point fracturing of oil well vertical to the orientation of the maximum principal stress can improve development effectiveness of the ultra-low permeab.
采用交错井网,用直井注水的方法,在油井水平段垂直于最大主应力方向进行多点有效压裂,能有效地提高特低渗透油藏开发效果。
2.
The soil cutting experiment indicates that the interior friction angle and the shear intensity of soil is reduced;and the maximum principal stress is decreased due to the vibration load;it induces the decrease of digging resistance.
从理论上研究了振动掘削岩土的减阻机理,土壤剪切试验结果表明,振动载荷能够使土壤的内摩擦角变小、抗剪强度下降、最大主应力值减小,从而导致挖掘阻力降低;对土壤在静态载荷和振动载荷作用下的失效过程进行了对比仿真实验研究,可知土壤在振动加载的条件下强度显著下降,并提前于相同条件的静态加载而破坏,同时跟踪X方向的载荷发现,振动掘削最大掘削阻力可降低50%。
3.
Because there was dissension in the maximum principal stress orientation obtained by in-situ stress measurements by different results measurements,the principal stress axis was determined by conjugate joints,fault occurrence,rake angle and shift symbol of fault slip.
针对地应力场测量给出的区域最大主应力方向常常有争执,且不同的测量方法结果也不同。
6) maximal principal stress
最大主应力
1.
This paper proposes two identification methods of maximal principal stress and its orientation by analysing the stress formula of bevelface.
通过对平面应力状态下斜面上正应力公式的分析 ,提出了最大主应力方位的两种判定方
2.
The critical J integral and the maximal principal stress under joint intensity theory was used as the criteria of crack starting of con-rod,the stress,plastic strain and displacement field were analyzed,and the distribution of crack starting points were displa.
对连杆准静态裂解进行了数值模拟分析,对裂纹区网格划分、接触与约束处理、无应力投影功能与自适应加载步长等关键技术进行了探讨;运用临界J积分和最大主应力准则作为连杆启裂的判据,分析了启裂时连杆应力场、塑性场及位移场,给出启裂点的分布状况。
3.
Based on the stresses calculated, the maximal principal stress was taken as the control criterion of the effects of H/B and the distance between bridle rods on the stress of cross section of aqueducts, and the relationship between the aqueduct stress and the rod distance was derived.
利用有限元法详细计算了不同H/B下无拉杆和不同拉杆间距简支梁式矩形渡槽槽身的应力,根据计算应力,以最大主应力作为控制标准,分析了H/B以及拉杆间距对槽身横截面应力的影响,提出了渡槽槽身应力与拉杆间距之间的关系。
补充资料：大主
1.即太主。皇帝姑母的称号。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条