摘要
研究目的:黄土是第四纪陆相的特殊沉积物,是一种典型的结构性土,其特殊的结构直接影响着黄土的工程性质。随着我国经济建设不断发展,黄土地区的工程数量和规模日益加大,由黄土引发的工程事故相继出现,这对黄土的结构性研究具有实际的意义。研究结论:(1)压力变化对黄土结构性产生影响。压力的增大引起的压密会使黄土结构的可变性减小而使其结构可稳性增强。(2)含水量变化对黄土结构性产生影响。随着含水量的增大黄土的结构性参数值降低。同时,含水量对黄土结构性的影响程度与压力对黄土结构性的影响程度密切相关,压力低时,压力对黄土结构性的破坏较小;随着压力的逐渐变大,压力对黄土结构性的破坏逐渐加强。(3)压力和含水量对黄土结构性影响是一样的,都是结构性破坏的途径,只是其破坏的程度不同。
Research purposes：Loess is a special quaternary continental deposit with typical structural soil,and its special structure directly affects the characteristics of engineering mechanics of loess.With continuous developments of the economy and construction in China,the project quantity and scale in loess region increase day by day.The engineering accidents caused by the loess happens sometimes,so the study on the loess structure has a practical significance. Research conclusions：（1） The change pressure affected the loess structure.The compaction arose by pressure made reduced the changeability of loess structure and the stability of structure increased.（2） The change water content affected the loess structure.The structural parameter reduced with the increasing of water content.At the same time,both have nearly relationship.The pressure was lower,the damage of loess structure is smaller.（3） Both of the pressure and water could cause the damage to the loess structure,but the damage level was different.
出处
《铁道工程学报》
EI
北大核心
2011年第3期24-31,共8页
Journal of Railway Engineering Society
关键词
原状黄土
重塑黄土
结构性
结构性参数
intact loess
disturbed loess
structure characteristics
structural parameter
作者简介
孙明祥，1983年出生，男，助理工程师。
