论文总字数：21958字

摘 要

文章通过对所采集的黏土进行高压压实后得到不同含水率的土样，先对其进行颗粒分析以及液塑限测定试验，得到颗分曲线以及塑限和液限，确定土体的种类，再对其进行剪切试验、固结试验、无侧限抗压试验、黏度试验等。得到并分析了在于塑限与液限之间时，土样的固结压力与孔隙比、剪切位移与应力、轴向应变与轴线应力的关系图，得到了固结系数、土样最大切应力等土体的一系列力学指标；配置在于液限以上的含水率，对含水率50%~100%之间的溶液以10%为阶层分为七级，对各级溶液进行黏度测定，得到土体黏度随着时间的增长的变化曲线。总结出了压力与土体含水率之间的关系方程，含水率与黏度之间的变化规律，以及黏度与时间之间的变化规律。实验结果有助于在工业上通过不同的压力得到特定的含水率的土样以及土体溶液的黏度进而估算出溶液的含水率以及一系列相应的力学性质。

关键词：黏度 含水率 固结 剪切强度 无侧抗压强度

Experimental study on mechanical properties of soils with different moisture content

Abstract

The paper for the acquisition of clay is obtained by high pressure after compaction soil sample of different moisture content, first carries on the grain size analysis and determination of liquid plastic limit test, scored a curve and plastic limit and liquid limit, determine the types of the soil itself, again carries on the shear test, consolidation test, unconfined compressive strength test, viscosity test, etc. The relations between consolidation pressure and pore ratio, shear displacement and stress, axial strain and axial stress of soil samples were obtained and analyzed, and a series of mechanical indexes of soil were obtained, such as consolidation coefficient and maximum shear stress of soil samples. The configuration is the water content above the liquid limit. The solution with water content between 50% and 100% is divided into seven stages by 10%. The viscosity of the solution at each stage is measured to obtain the change curve of soil viscosity with the increase of time. The relationship equation between pressure and soil moisture content, the change rule between moisture content and viscosity, and the change rule between viscosity and time are summarized. The experimental results are helpful to obtain the specific moisture content of the soil sample and the viscosity of the soil solution through different pressures in industry, and then estimate the moisture content of the solution and a series of corresponding mechanical properties.

Key Words: Viscosity；moisture content；consolidation；shear strength；no side compressive strength

目 录

摘要·······························································································Ⅰ

ABSTRACT····················································································Ⅱ

第一章 绪论··················································································1

第二章 试验土体············································································3

2.1试验材料来源··········································································3

2.2土体分析···············································································3

2.2.1仪器设备········································································3

2.2.2试验方法与数据图表·························································3

第三章 试验方法············································································7

第四章 液态土样············································································8

4.1仪器设备···············································································8

4.2试验方法与数据分析·································································8

第五章 固态土样··········································································10

5.1仪器设备··············································································10

5.2试验方法与数据图表·······························································10

5.2.1 真空加载制样·······························································10

5.2.2 杠杠加载制样·······························································11

5.2.3 固结试验·····································································14

5.2.4 剪切实验·····································································17

5.2.5 无侧限抗压试验····························································19

第六章 不同含水率的土体性质对比分析·······································22

6.1液态土样黏度的比较分析 ······················································22

6.2固态土样力学性质的比较分析 ··················································24

结论·····························································································26

参考文献······················································································27

第一章 绪论

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