swcc

In this dissertation , a SWCC model is first developed and improved so that it can be used to describe arbitrary wetting / drying histories . An elasto-plastic constitutive model of unsaturated soils is then proposed , which is capable of addressing the coupling of SWCC and stress-strain relationship .

本文首先完善和发展了可以描述任意吸湿脱湿循环滞回的土水特征曲线模型，进而建立了土水特征曲线和应力应变关系耦合的非饱和土弹塑性本构模型。

Preliminary Study on the Prediction of SWCC from Basic Soil Properties A PRELIMINARY INVESTIGATION ON THE MORPHOLOGICAL AND BIOLOGICAL CHARACTERISTICS OF LOTUS VARIETIES

基于土性参数预测土水特征曲线初探荷花品种的形态特征及生物学特性的初步观察

Independent domain hysteretic model for SWCC by introducing normal distribution function

基于正态分布的土水特征曲线独立域滞后模型

Research of SWCC impact to cover press upon soil in shallow layer

浅层地带中上覆应力对土的SWCC影响研究

On formulas for soil suction and optimum centrifugal time by use of SWCC

SWCC测定时吸力计算公式与最佳离心时间的探讨

Permeability coefficient is derived from field SWCC , which is of significance for actual engineering .

从土-水特征曲线还能获知非饱和膨胀土的渗透参数，对工程具有一定的指导意义。

Study on SWCC of unsaturated expansive soil

非饱和膨胀土SWCC研究

In the paper , the framework and characteristics of the coordinated SWCC testing system were introduced and some attentive problems during test process were analyzed .

介绍了配套后的压力板仪土-水特征曲线测试系统的结构组成与特点，对土-水特征曲线（SWCC）试验过程中应注意的问题进行了剖析。

The SWCC of MSW from Hangzhou was measured by the use of Tempe cell and pressure plate .

本文介绍了采用Tempe仪和压力板仪测试杭州城市生活垃圾持水曲线的方法与结果；

Combined with the fitting parameters obtained from the VG model , the effects of mineral composition and pore structure of the soil on SWCC are analyzed .

结合VG模型拟合的参数，着重分析了矿物成分和孔隙结构对膨胀土土水特征曲线的影响。

And finally , the unsaturated permeability coefficient of gravelly soil is calculated by empirical formulas based on its SWCC and saturated permeability coefficient .

最后，根据土水特征曲线和饱和渗透系数，采用经验公式估算了其非饱和渗透系数。

Through comparison of software simulation and laboratory tese result , we can find the way to estimate the maximum height of soil capillary water by using SWCC .

对比数值模拟与室内试验结果，找到利用土水特征曲线估算土壤毛细水最大上升高度的方法。

The soil water characteristic curve ( SWCC ) of municipal solid waste ( MSW ) is an important parameter for the flow analysis of gas and water in landfill .

城市生活垃圾的持水曲线是垃圾填埋场水气运移分析的重要参数。

The main research conclusions consist of : 1 . The SWCC of undisturbed soil have lower air-entry value and smaller slope than that of disturbed soil .

原状土土-水特征曲线进气值较小，曲线斜率较为平缓；

The SWCC is defined as the relationship between suction and water content ( or degree of saturation ) for the soils , which is an important topic in the research of unsaturated soil .

SWCC描述了土中基质吸力与含水率（饱和度）的相互关系，是非饱和土力学研究的重要特征关系之一。

In order to compare different shear strength equations of unsaturated soil , Luojiashan soil samples are selected for the soil-water characteristic curve ( SWCC ) test and unsaturated triaxial tests .

通过珞珈山土样的土–水特征曲线试验和非饱和三轴剪切试验对非饱和土强度公式进行比较研究。

Based on the measurement of matric suction indoor and outdoor , we think over synthetically the effect of multi-factors to fit and compare SWCC , also we build the model of power function .

综合考虑各种因素的影响，通过室内和野外吸力量测，对土-水特征曲线进行拟合、比较，建立了幂函数模型。

Experimental results proved that this system requires low cost and little re-building for current devices , and that the slag detection ratio can be more than 95 % , and can meet the requirements of SWCC .

实验结果表明，该方法成本低，对现在有设备改造小，下渣检出率在95%以上，符合钢水连铸的生产要求。

A device for field measurement of matric suction and its measured results are introduced in this paper . The results are compared with that from tensiometer method and SWCC , which illustrate that the device is simple and practical .

介绍滤纸法现场测量基质吸力的装置和测量结果，并与张力计测量结果、水土特征曲线算得的结果相比较，说明研制的装置简单实用。

This research is summarized as follows : ( 1 ) Based on an internal variable-based theory of capillary hysteresis , a SWCC model is developed , which can be used to simulate the soil-water characteristics of unsaturated soils subjected to arbitrary wetting / drying histories .

研究工作主要包括以下几个方面。（1）基于毛细滞回内变量理论和传统的土水特征关系经验模型，提出了能模拟在任意加湿/脱湿循环路径下土水特征关系的修正模型。