剪胀性是砂土本构模型一个关键问题。
Dilatancy is the key issue to describe the constitutive behaviors of sand.
粗粒土具有明显的剪胀剪缩性，为非虎克材料。
Coarse-grained soils exhibit evident dilatancy, and they do not obey the Hook's law.
应力路径相关性不仅包括压硬性效应，而且还包括剪胀性。
The dependence of stress path includes not only the effect of pressure sensitivity but also shear-induced dilatancy.
土的密度越大，有效平均正应力越低，土的剪胀性就越大。
The larger the density, the lower the effective mean normal stress, the more dilative response is.
螺纹钢螺栓加固附近挖掘和提高了围压，抑制大剪胀岩体。
The rebar bolts reinforcement improves the confining pressure near excavation and suppresses the large shear dilatation of rock mass.
结果显示，当上覆压力较小时，剪胀角对抗拔应力的影响较小。
Parametric analysis is carried out to investigate the effects of soil dilation and overburden pressure on the soil nail pullout resistance.
达到一定程度后，岩石表现出短暂的应变硬化，岩石开始剪胀。
When it accumulated to a higher degree, the specimen began to shear and dilate after a short time of strain hardening.
剪应力达到峰值所需要剪位移总是比剪胀发生时所需的剪位移大。
The shear displacement for the dilatation is always less than that at the peak shear stress.
当土颗粒产生剪切位移时，土样发生剪胀，土体的原始结构完全被破坏。
The original structure of soil sample is completely destructed while the displacement of the soil grains are produced, by means of the dilatation of the soil sample.
当土颗粒产生剪切位移时，土样发生剪胀，土体的原始结构完全被破坏。
The original structure of soil sample is completely destructed while the displacement of the soil grains are produced, by means of the dilatation o...
提出考虑土的应变软化、剪胀（剪缩）性和应力路径影响的非线性弹性模型。
Suggest the nonlinear elastic Constilutive model taking into the account of strain-softening, shear dilatancy(shrinkage)properties and stress path.
巷道底臌有挤压、压曲、膨胀和剪胀等形式，压曲底臌是最常见的一种形式。
There are roadway floor heave types such as extrusion, bending under pressure, expansion and shearing dilation, among them bending under pressure is the most common type.
在模型中，剪胀体应变由一个可逆的体应变分量和一个不可逆的体应变分量构成。
In this model the volumetric strain due to stress-dilatancy for a granular material is composed of reversible and irreversible dilatancy components.
主裂缝的总体传播方向与断层平面的夹角约等于土体在土层平均围压下的剪胀角。
The propagation angle of the principal fault rupture through soil equals the dilation angle of the soil under the mean confining pressure.
给出了塑性区中平均体积应变及弹、塑性变形体积的计算公式和剪胀角的测试方法。
The expressions of elastic deforming volume and plastic deforming volume in the plastic zone were presented together with the average plastic volumetric strain.
原状膨胀土在吸力和净围压较低时的剪胀和软化特性主要是由于结构损伤的演化引起。
The dilation and softening characteristics of natural expansive soil while shearing under low net mean stress and suction are mainly caused by the evolution of damage structure.
卸载状态下冻土三轴蠕变试验结果表明，冻土具有明显的剪胀性，且体积应变不能忽略。
The results of triaxial creep experiments for unloading state show that the frozen soil has an obvious dilatancy, and its volume strain should not be neglected.
考虑结构面各向异性剪胀的楔形体稳定分析方法以三维锯齿形模型描述结构面表面形态。
This method adopts a 3D saw-tooth-like model to characterize the anisotropic dilatancy of discontinuity.
研究表明，巷道底臌有挤压、挠曲、膨胀和剪胀等形式，剪胀底臌是最常见的一种形式。
The study shows that laneway floor heave has various types such as extrusion, deflection, inflation and shear dilation, with the shear dilation being the most commonly seen.
位移统一解合理地考虑了中间主应力效应和围岩剪胀特性的影响，具有广泛的理论意义。
The effects of intermediate principal stress and dilatancy are considered in the unified displacement solution; so the unified solution obtained has very broadly theoretical value.
通过建立一个三维有限元模型，研究土钉在不同上覆压力和剪胀作用下的土钉抗拔行为。
In this paper, a three-dimensional (3d) finite element (fe) model is developed to simulate the behavior of soil nail considering the effects of overburden pressure and dilation.
感应各向异性，剪胀，剪切软化和循环流动的机制，从微观机制的观点出发，进行了讨论。
The mechanism of induced anisotropy, dilatancy, shear softening and cyclic mobility was discussed from the viewpoint of micro-mechanism.
在剪胀条件下，分析了剪切带内部的局部体积应变增量及由于剪胀而引起的剪切带的法向变形。
For dilative material in shear, the increment of local volumetric strain in shear band and the normal deformation of shear band due to shear dilatancy were derived.
当吸力相同时，原状样的峰值强度和剪胀势均高于压实样，这与原状样中铁锰结核的胶结作用有关。
As compared with the compacted specimens, the natural specimens were higher in the peak shear strength and the dilatancy due to the cementation effect of the iron and manganese oxides.
干密度值较高时，土样处于密实状态，表现出剪胀特性，有效主应力比-应变曲线近于应变软化型；
When the dry density is relatively high, this dense specimen shows shear dilatation characteristics, and the effective principal stress ratio tends to be strain softening phenomenon.
三轴压缩试验条件下，剪应力引起的体积变形一般是先剪缩后剪胀的，其大小由密度和应力状态决定。
The volumetric strain induced by shear stress is shrinking at first, then dilating later under triaxial compression test conditions, of which the value is determined by density and stress state.
模型对传统修正剑桥模型中的剪胀性公式进行了改进，考虑了状态转换应力比与初始有效围压的相关性。
The traditional dilatancy equation of Cam-clay model was modified and the relativity between the phase transformation stress ratio and initial effective pressure was considered.
结果表明，岩石节理峰值和残余剪切应力随垂直应力的增加呈线性增长趋势，而剪胀特性已变得不明显。
The test results show that the peak and residual shear stresses increase linearly with the increase of different normal stress histories.
本文采用完全耦合有效应力分析程序和与状态相关的剪胀性砂土模型模拟斜坡因地下水位变化而发生的变形。
The deformation of slope caused by change of ground water level was investigated by adopting a fully coupled procedure and the stat.
本文采用完全耦合有效应力分析程序和与状态相关的剪胀性砂土模型模拟斜坡因地下水位变化而发生的变形。
The deformation of slope caused by change of ground water level was investigated by adopting a fully coupled procedure and the state-dependent dilatant sand model.
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