不同含水率重塑黄土变形特性分析  

Analysis on Deformation Behavior of Remolded Loess with Different Moisture Contents

作　　者：吴民晖[1] 许德鲜 祝学文[1] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]西北综合勘察设计研究院,西安710003

出　　处：《路基工程》2015年第1期55-59,共5页Subgrade Engineering

基　　金：国家自然科学基金:高动水压力作用下碳纤维复合浆液在岩体裂隙中的扩散机理(41002093)

摘　　要：采用侧限压缩固结仪,对相同干密度、不同含水率的重塑黄土(Q3)进行压缩固结试验。借鉴原状黄土湿陷性的研究方法,分析了含水率对于重塑黄土的变形影响。结果表明:在给定应力水平下,土样的最终应变随着含水率的增大而增大。在给定含水率下,土样的最终应变随着应力的增大而增大。重塑黄土仍具有较大的湿陷性,在给定的应力作用下,随着含水率的增加,湿陷系数呈线性减小。With confined compression consolidation test apparatus, compression consolidation test was carried out on the remolded loess （Q3） having the same dry density and different moisture contents. By referring to the method studying collapsibility of original loess, the influence of moisture content on deformation of remolded loess was analyzed. The result shows that, on the condition of given stress, the loess sample has the strain increased with the moisture content eventually, and on the condition of given moisture content, the loess sample has the strain increased with the stress eventually; remolded loess has relatively strong collapsibility and, under the action of given stress, it has decreased linearity on collapse coefficient as the moisture content increases.

关 键 词：重塑黄土 含水率 应变 湿陷 

分 类 号：U416.169[交通运输工程—道路与铁道工程]