高路堤路面结构纵向裂缝分析

Approach to the Principle of Pavement Longitudinal Crack Occurence for High elevated Highway

分析了某高等级公路粘性土高路堤面层开裂的原因及机理。根据室内、外试验结果，重点阐述了高路堤粘性土物理状态改变和土体内部力系平衡变化引起的路堤结构的变形稳定性问题。原位变形监测发现粘性土高路堤的自身压缩变形历时３ 年尚未稳定。最后，提出了高路堤粘性土填筑技术中应注意的几个问题。

The paper discusses the cause and the principle of the pavement longitudinal crack of the high elevated highway.Based on the laboratory test and the field test,the deformation stability of the high embankment aroused by the physical state change and the broken static equilibrium of the clayey filling are analysed.By means of the in situ monitoring,the conclusion is reached on the high clayey filling structure that the deformation has been developing no stop for three years and that it is still going on.Finally,the paper points out special technical need as to the elevated highway filled with clayey soil.