拉、压试验可以在带国压和温度的三向应力状态下进行。
The tensile and compressive tests can be conducted under three dimensional state of stress with confining pressure and a given temperature.
本文用椭圆抛物面作为混凝土三向应力时的强度破坏面。
An elliptic paraboloid is proposed as the failure surface for concrete under multiaxial Stresses.
体积应力：应力在构件结构中沿空间三个方向上发生，也称三向应力。
Volume-stress: the stress exists in three directions in the volume of the component is called Volume-stress, which is also called three-faces stress.
研究三向应力状态下条形地基极限承载力问题具有重要的理论和实际意义。
It is of important significance to study the ultimate bearing capacity of foundation in three-dimensional stress.
岩体三向应力状态下的三轴流变试验是真实反映工程岩体流变特性的重要手段。
The in-situ rheological test under three-dimensional stress is a very useful way to reflect the actual rheological properties of filed rock mass.
通过实例计算，对比分析了用“三向应力圆”理论与其他几种理论计算的抗挤强度值。
The monotone property of multivariate function proved that the maximum stress strength point exists on the inner surface of casing under the triaxial stress conditions.
通过实例计算，对比分析了用“三向应力圆”理论与其他几种理论计算的抗挤强度值。
The formula for calculating the axial stress of casing was discussed with theoretic deduction and calculation methods.
基于压裂泵阀箱的失效分析，建立了在三向应力作用下计算阀箱可靠性的模型，设计了计算程序。
Based on the failure analysis of the fracturing pump valve chamber, a model for calculating its reliability under three-dimensional stress is established, and a computing program is worked out.
提出了矩阵相似变换在应力分析 （特别是三向应力分析 ）中的应用 ，使应力分析得以程序化。
This article proposes the applictaion of similarity transformation of matrix for stress analyses, which is available for the formula of stress analyses.
根据算例表明当考虑三向应力状态时条形地基的极限承载力将提高，这对实际工程具有重要理论和现实意义。
According to the numerical results, the ultimate bearing capacity of foundation with consideration of three-dimensional stress is improved, which is of important significance for engineering.
根据相关文献的实验数据，对三向应力圆理论的正确性进行了初步验证，证明三向应力圆理论与实验数据的符合程度较好。
According to the corresponding references and experimental data, the primary deduction of the correctness of this theory shows that the coincidence of the data points with the circle is better.
根据相关文献的实验数据，对三向应力圆理论的正确性进行了初步验证，证明三向应力圆理论与实验数据的符合程度较好。
According to the corresponding references and experimental data, the primary deduction of the correctness of this theory shows that the coincidence of the data points with the circle is better.
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