The angle of internal friction

The angle of internal friction of slide plane has greater effects on anchor force , therefore , that should be selected correctly .

滑动面内摩擦角对锚固力影响较大，须正确选用。

It is concluded that the angle of internal friction of backfill soil , the angle of friction between the earth and the wall back , the specific weight of backfill , the basis friction coefficient , the hydraulic gradient etc. are all normal distribution random variables .

认为回填土的内摩擦角、土与墙背摩擦角、填土重度、基底摩擦系数、水力坡度等均为服从正态分布的随机变量。

The cohesion and angle of internal friction of rock reduce considerably after unloading confining pressure ; the reduction is more obvious especially with water pressure .

卸荷后，岩石的黏聚力和内摩擦角均有较大幅度的降低，特别是有水压时，降低更是明显；

Basing Mohr-Coulomb theory , indirect tension and unconfined compression were used to calculate the cohesion and angle of internal friction of both mixes .

基于Mohr-Coulomb理论，采用无侧限抗压和间接抗拉强度对混合料的内聚力和内摩擦角进行计算。

The effective angle of the internal friction under plane strain condition is connected with that under the triaxial condition . Therefore , the effective angle of the internal friction and the failure criterion can be determined by a triaxial test .

该准则将平面应变和三轴条件下土的有效内摩擦角联系起来，只需通过三轴试验就可以确定平面应变条件下土的有效内摩擦角和破坏准则。

The application of angle of equivalent internal friction in earth-retaining wall design

等效内摩擦角在挡土墙设计中的应用

The influences of the angle of internal friction , the angle of wall friction to the direction of principal strain rate are analyzed .

分析了内摩擦角、壁面摩擦角对最大主应变率方向的影响。

Considering the effect of the angle of internal friction on the inclination of the sliding plane of soils behind retaining wall , the shape of the minor principal stress arch was theoretically analyzed .

考虑墙土摩擦角对挡土墙后土体滑裂面倾角的影响，对小主应力拱形状进行了理论分析。

The concept of angle of equivalent internal friction is interpreted . Its calculation method is mainly introduced . Combined with practice the application of angle of equivalent internal friction in earth-retaining wall design is elaborated , which ensure the design quality and safety of earth-retaining wall .

解释了等效内摩擦角的概念，着重介绍了等效内摩擦角的计算方法，结合实际阐述了在挡土墙设计中等效内摩擦角的应用，从而保证挡土墙的设计质量以及安全性。

Determination of the Value of the Angle of Equivalent Internal Friction of Clay Soil

粘性土等效内摩擦角φ′值的选定

The sensitivity of the calculating parameters includes angle of internal friction and depth of overburden .

并对内摩擦角和覆土深度等计算参数进行敏感性分析。

When it was tensile failure , the curve of stress-strain relationship was softening and the reinforcement only increased the angle of internal friction of soil .

当发生拉断破坏时，其应力-应变曲线为软化型，此时加筋仅增加土体的粘聚力分量；

Discussing the changes in soil parameters how to affect the stabilizing pile , analyzing the angle of internal friction and cohesion on the pile of soil arching .

分析研究了土体参数变化对抗滑桩的影响，讨论了内摩擦角和粘聚力对桩间土拱效应的影响，研究了土体参数变化条件下的桩板墙的地震响应。

This formula concerned the upper loading and a series of model parameters , such as the effective angle of internal friction , the effective cohesive intercept , the coefficient of earth pressure at rest K_0 , the modulus of compressibility , the modulus of resilience and so on .

它不但与上覆荷重和有效内摩擦角有关，而且与有效内凝聚力、静止土压力系数、土的压缩模量和回弹模量等一系列本构模型参数有关。

The result shows that the cohesion force is largely increased 256 % , and the angle of internal friction increased 122 % . The strength of soil increases with reaction time .

测试结果为固化后的粘土粘聚力有很大的提高，达到256%，内摩擦角也有较明显改变，增大122%，随着固化作用的时间延长，强度将还会进一步提高。

The differences among peak shear strengths in three directions are analyzed . Test results show the angle of internal friction is 42 ° and cohesion is 700 kPa in ice temperature - 6.2 ℃ .

分析了不同加载方向海冰峰值剪切强度的差异，获得-62℃温度下S2冰内摩擦角和内聚力分别为42°和700kPa。

The results are that the landfill is radical changing and the natural density , the water content , angle of internal friction and cohesion are all normal distribution . 2 .

天然密度、含水量、内摩擦角及内聚力均呈正态分布。

Anchoring material produces linear expansion deformation with temperature increase which lead to higher stress of anchorage materials . Steer constraint outside the simulative drilling hole made the friction force in the anchorage material increase , and the increase of Angle of internal friction eventually cause change of damage types .

温度的升高，锚固材料会发生线性膨胀变形，锚固材料的应力增加，外面模拟钻孔的钢筒约束，使锚固材料的摩擦力增大，内摩擦角的增大最后致使破坏类型的改变。

Although the shear strength of frozen clay is only increasing with the temperature decreasing , there is a tendency that the angle of internal friction is dropping with the lowering of temperature .

无论何种试验加载方式，冻结粘土的剪切强度都与围压关系不大，只随着温度的降低而增大，而内摩擦角则有随着温度的降低而减小的趋势。

Bearing capacity coefficients are then given for calculating the bearing capacity by using the method of the superposition involved in the conventional bearing capacity formula and investigating the effects of the angle of internal friction and the length-width ratio of footing .

为了使该方法能用传统的叠加法公式进行地基承载力计算，给出了三维条件下的各地基承载力系数值，并研究了基础长宽比和土的内摩擦角对各系数的影响。

Investigation shows that the angles of slopes of loess ridge and hill mostly vary from 14 ? to 28 ? The upper limit of the characteristic angles corresponds to the angle of internal friction of loess and the lower limit to half of the angle .

本文指出黄土地区梁峁坡的坡角主要分布在14°&28°之间，特征坡角的上限相当于黄土的内摩擦角，下限相当于内摩擦角的0.45倍。

We have accomplished the large scale field test of landslide inspired by artificial rainfall and laboratory soil test . The test results illustrate that there is a linearly descending relationship of the cohesion and angle of internal friction with the water content .

并进行大型的野外人工降雨激发滑坡试验和室内土工试验，试验结果表明粘聚力和内摩擦角与含水率呈线性递减关系；

The triaxial shearing test showed that the cohesion of sand reinforced with the fibre of sand thorn or sand willow was increased by 2.5 ~ 4 times ; the cohesion and the angle of internal friction were increased by 0.25 ~ 0.40 times for the reinforced clay soil .

三轴剪切试验结果表明，沙棘、沙柳须根的加筋作用使沙土的粘聚力c值提高了2.5~4.0倍，使粘性土的粘聚力c值及内摩擦角φ值均增加0.25~0.40倍。

The shear strength parameters are reduced than those were not under the cyclic load . And under the same cyclic load , the reduction factor of cohesion is larger than the reduction factor of the angle of internal friction .

经过循环荷载作用的抗剪强度参数均比未受循环荷载作用的指标有所折减，而且在相同循环荷载的作用下，粘聚力折减系数比内摩擦角折减系数大。

Through the present calculation of rock mass stability , it is considered that the angle 6 between the force acting on the breaking face and the normal direction of the face would be more appropriate to take the angle of internal friction of rock .

通过对目前稳定岩体的计算，认为内破裂面作用力与法线夹角δ值取岩石内摩擦角比较合适。