人工制备湿陷性黄土湿陷影响因素分析

Analysis of Influential Factors Related to Collapsibility of Artificially Prepared Collapsible Loess

通过人工制备出强湿陷性黄土,对其湿陷性主要影响因素展开分析。试验分析了外荷载、润湿含水率对湿陷系数的影响。研究结果表明:在相同的润湿含水率条件下,随着压力的增加,相似材料的湿陷性逐渐变弱;在相同荷载条件下,湿陷系数随着含水率的增大而减小;当荷载和含水率均发生变化时,人工制备黄土的湿陷变形更加明显。研究成果可用于划分湿陷性黄土的湿陷类型,以及评价黄土的湿陷性和湿陷变形。

Through the artificially preparation of strong collapsible loess,the main influential factors ofits collapsibility were analyzed. The effects of external load and moisture content on the collapsibility coefficient were tested. The results showthat with the same moisture content,the collapsibility of similar specimens is weakened with the increase ofloading,while with the same loading,the increase of moisture content brings down the collapsibility coefficient. If the two factors vary simultaneously,the collapsible deformation induced becomes increasingly noticeable,which can be applied to the classification of collapsible loess and to the analysis of collapsibility and collapsible deformation.