黄土增湿特性的结构性定量化参数  

Structural Quantitative Parameters Reflecting Humidification Properties of Loess

作　　者：陈茜[1] 骆亚生[1] 程大伟[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,杨凌712100

出　　处：《武汉理工大学学报》2011年第8期104-107,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50578134);教育部新世纪优秀人才支持计划(NECT-06-0864)

摘　　要：依据土的结构性观点,提出了一个能够反映黄土增湿特性的结构性定量化参数—结构性增湿系数。并利用侧限压缩试验对甘肃省兰州市、陕西省杨凌区2个采样地黄土进行不同含水率和不同压力条件下黄土增湿特性的研究。结果表明:压力和含水率对黄土的结构性参数具有显著影响;相同压力条件下,含水率越大,结构性增湿系数越大,且二者之间呈现非线性的关系;相同含水率条件下,黄土的结构性增湿系数总趋势上随压力的增大而增大;结构性增湿系数在受水和荷载作用下变化规律明显,能够较好地反映黄土的结构特性与增湿变形特性。Based on the view of the soil structural characteristics,this paper proposed a parameter of structure which reflects the humidification properties of loess,and researched humidification properties of two different regions loess from Lanzhou and Yangling under the different water content and different pressure on confined compression test.Results show that pressure and water content have significant impact on the structural parameters.Under the same pressure condition,the greater water content,the greater is structural humidification coefficient.And under the same water content,the general trend is that loess structural humidification coefficient increases with the increase of pressure.The law of structural humidification coefficient is obvious under different water and load conditions,which can reflect loess structural properties and humidification deformation properties.

关 键 词：黄土 结构性参数 结构性增湿系数 

分 类 号：TU411.8[建筑科学—岩土工程]