土体

By analyzing experimental data, some conclusions were made that adding normal loads on silt is not an applied method to raising interface shear resistance, Adding some large grains of debris in slit can strengthen the passive resistance force of the transverse ribs of geogrids, yet reduce the integrated pullout resistance force of geogrids when subjected to low normal loads, the ultimate pullout force can be greatly enhanced by adding normal stress to restrain soil dilatability .

对试验结果比较分析后发现：单纯提高法向荷载来增加格栅表面的摩擦剪切阻力的方法并不适用；在粉土中加入大粒径碎石，可以提高格栅横肋的被动阻力，但在竖向荷载较小的情况下，反而降低了格栅的整体拉拔阻力；施加适当的法向荷载，抑制土体的剪胀效应，格栅整体拉拔力得到了显著增强。

Traditional stress dilatancy theory had been extensively used in constitutive modeling, and its application to clay was very successful.

经典的应力剪胀理论被广泛应用于土体弹塑性本构模型的建立，较好地模拟了黏性土的变形特性。

It is shown that the model in this paper can be included in the nonlinear and dilatancy properties, and the effects of different consolidation pressure and the second main stress.

该模型能同时考虑土体的非线性和剪胀性，以及不同固结压力和第二主应力对地基土的影响。

However it was found that this theory was not suitable for sand modeling due to the ignorance of internal state variable of materials in the definition of dilatancy equation.

最新的研究表明：由于应力剪胀理论中忽略了土体内部状态参量对剪胀的影响，而使得该理论应用于砂土时发生了困难。

Experimental study of stress-strain relationship of normally consolidated intact soft clay in Hangzhou under undrained fixed shear of principal stress direction and monotonic rotation of principal stress axis had been done, which was used to reflect the soil properties response to the monotonic rotation of principal stress axis under real engineering conditions.

为反映真实工程条件下主应力轴旋转应力路径引起土体性状的变化，对杭州地区正常固结原状软黏土在固结不排水的主应力轴定向剪切和主应力轴单调旋转条件下的应力-应变关系进行试验研究。

Ground loss model of tangent double circles is adopted to establish a uniform ground movement pattern of shield tunnel by introducing the coordinate parameter of movement focus.

土质软硬决定了隧道周围土体的移动方向，移动焦点在隧道中心点与隧道底部位置之间变动。

The dynamic cohesion of reinforced-soil increases obviously, but its dynamic internal friction angle is unchanged compared with pure soil.

一层加筋的阻尼比比两层加筋的阻尼比要大；土体的密实度对阻尼比有较为明显的影响，密实度越大阻尼比越大。

So this article mainly focuses on the study of the spreading of vibration wave in the earth under the condition of viscous boundary condition.

采用粘性边界条件对振动波在土体中传播问题进行了研究。

The Highway tunnel with small spacing entrance to cave a term of stratum thinner, belonging to strong effloresce band, wall rock generally more broken, and usually clipping soil layer, for this kind of disadvantage condition in soil arch, how reasonable exploitation every kind of construction method, while insuring the safe premise, lower the engineering cost, increasing work efficiency.

高速公路小净距隧道洞口段的地层较薄，多属于强风化带，围岩一般比较破碎，而且通常夹有土层，那么对于这种不利于土体成拱的条件下，怎样合理利用好各种施工方法，提高工作效率，同时对岩层的破坏机理研究，各种施工方法对围岩影响的研究，这些工作是目前急需解决的问题。

The dynamic response of the embedded pile due to the wave force was studied by an analytical method of eigenfunction expansion.

通过展开波浪对桩散射问题的特征函数的方法研究了波浪荷载作用下桩-土体-水流系统的动力响应问题。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐