变化土

通过对自然脱水干燥前后盐渍土的强度试验，探讨了微观结构变化对土强度的影响。

In addition , the effects of change in the microstructure on soil strength were researched .

的变化对土压力有明显影响，工程设计中不应忽略对减小土压力的贡献；

Variation in parameter has a significant effect on the earth pressure and should not be overlooked in engineering design .

分析说明在直流电场作用下，电解、运输和物理化学变化对土的力学性质的直接影响。

The analysis shows that there is a direct effect of electrolysis , transport and geochemical changes on the soil mechanical properties .

这种附加变化由土颗粒接触行为决定，受到试样初始条件和振动幅值等多种因素的影响，表现出不同的变化模式。

The variation modes for the small strain shear modulus are initial specimen condition and cyclic amplitude dependant , decided by the soil particle contact behaviour .

因此从小环境的角度，探讨了自然营力引起的环境变化以及土工建设可能引发的环境破坏和工程危害；

Secondly , the environment changes by the constructive force of nature and the probable environment destruction and engineering hazard caused by earthwork construction are discussed on micro environment aspect .

干湿交替条件下，红壤速效K没有变化，黄褐土速效K逐渐增加。

Under the water conditions of alternate drying-wetting , available K in red soil did not change obviously , which in yellow-cinnamon soil increased gradually .

高岭石与各种酸体系分别反应0.5、1、2h后，高岭石在盐酸、HF、土酸中比较稳定，衍射峰没有明显的变化，但土酸体系中的高岭石峰强度有微弱的降低；

After 0.5h , 1h and 2h reaction in different acids , kaolin remains stable in HCL , HF and mud acid without obvious change of diffraction peak except slight drop of kaolin peak intensity in mud acid .

地下水位变化对桩土结构地震动力相互作用影响的有限元无限元耦合分析

Finite-infinite Element Analysis of Seismic Pile-soil-structure System Considering Change of Groundwater Level

环境变化对改良土疲劳强度影响的试验研究

Experimental Study on the Effect of Environmental Change to Fatigue Strength of Improving Soil

填埋压缩和温度变化作用下土工膜张拉力的实验研究

Experimental Study on the Tensile Force in the Geomembrane Due to Compaction Work and Temperature Variation

本文以大量的实际资料为依据，阐述了毒性金属形态变化与岩土饱水性的关系，提出了在非饱和环境的岩土中。

It presents the idea that under the non-saturated environment of rock-soil , the poisonous metal exists chiefly in the form of residual appearance .

含水率变化时膨胀土体积会产生吸水膨胀或失水收缩，这与温度变化时一般材料的反应相似。

Water swelling and drying shrinkage due to moisture change is the expansive soil 's characteristic which is similar to the thermal effect of material .

还可能导致重力地貌过程系统的变化，造成土滑、滑坡和崩塌等灾害；

It also may cause the change of gravitational geomorphological process system , giving rise to soil slip , landslide , fall and so on .

试验选用杭州湾地区分布较广的粉土，研究了振动频率的变化对粉土动应变和动强度的影响。

The silt distributing abroad in Hangzhou bay was chosen as research object to evaluate the effect of vibration frequency on dynamic strain and dynamic strength of silt .

当粘粒、粉粒含量变化时粉土的动强度、振动孔压性状及液化后变形特性等问题都值得深入研究。

It is still deserved to study the liquefaction strength and dynamic pore water pressure and post-liquefaction character of silt when the clay particle content and silt particle content change .

含水量的变化影响膨胀土的峰值强度和残余强度，浸水后的膨胀土具有一个稳态强度；

The peak value strength and remains strength of the expansive soil are affected by the change of water content , expansive soil has a stable state strength when it soaks water ;

气候环境和外荷载的变化会使土的含水量发生改变，含水量的改变引起基质吸力的变化，最终导致土体抗剪强度的变化。

Changes in the environment and external loads will bring changes in the moisture content of soil , which will lead to changes in the matric suction , and thus changes in the strength of soil .

基于上述观点，本文针对研究因城市建设导致的地下水化学组份变化对粘性土结构强度影响及作用方式的变化，以城市区域地下水的化学作用入手，剖析土颗粒间的连接作用及胶结物作用。

Basing on the above viewpoints , this paper aims at affection that groundwater 's chemistry component change having on fine-grained soil structures strength , and analyses the connection and cementation between soil granules proceeding with water chemistry function .

本文用有压管道水击理论，解释了垂直饱和土柱出流通量随时间变化滞后于土柱顶部输入水头阶跃变化的原因。

The hysteresis phenomenon , that the variation of soil water output flux at the bottom of a vertical saturated column is lagged behind the step changing input from the top , is explained according to the water hammer theory .

研究了剪切模量随深度呈线性变化时场地土的随机地震反应分析方法，分别建立了基岩输入地震动加速度功率谱函数为白噪声和过滤白噪声时场地土的随机地震反应分析理论。

The random seismic response analysis method of soil in site when its shear modulus changes linearly with the depth is studied and the random seismic response analysis theory of soil in site when seismic acceleration power spectrum of bedrock input are white noise and filter white noise is proposed .

该区土壤pH值变化明显受成土母质、土地利用方式、施肥措施和工业发展的影响。

The change of soil pH is remarkably influenced by soil parent material , land use types , fertilization measure and industry development .

根据CT图像的变化，分析膨胀土固结前后、剪切破坏、加水膨胀变形、饱和后剪切破坏过程中膨胀土的结构变化。

The structural changes during the course of consolidation , shear failure , swelling and water saturated shear failure are analysed by means of CT images .

劳台（Lode）应力角的变化常会引起土的体应变或孔压的增加。

The variation of Lode stress angle usually enhances the soil volumetric strain or pore pressure .

利用WAXD、DSC和声速法等手段测试纤维的取向、结晶度及结晶形态等的变化，研究蒙脱土的加入对PET纤维热收缩性能的影响。

The influence of MMT naonomaterials on the thermal shrinkage performance of PET fiber was investigated by means of WAXD , DSC , fiber orientation measurement , etc.

MSW的动剪切模量Gd和阻尼比D随着动剪应变γd的变化曲线与泥炭土的相关曲线形状基本一致，并且在相同应变时数值相差不大。

It is concluded that the relationships of dynamic shear modulus and damping ratio versus dynamic shear strain of MSW are similar to those of peaty soil .

从矿质组分变化看膨润土酸化改性机理

On acidation modification mechanism of Bentonite from its change in components

考虑基质吸力变化时非饱和土的一维本构模型

One-dimensional constitutive model of unsaturated soil considering change of matric suction

含水量变化时非饱和土的变形研究

Deformation of Unsaturated Soils Induced by Variation of Water Content

水位变化条件下粘性土渗流特征试验研究

Experiments on osmosis through clayey soil under the condition of variable water levels

考虑体积质量变化时非饱和土的土压力系数

Expressions of coefficients of lateral earth pressure for unsaturated soils considering change of volume mass