高填方路基压实土力学性状实验  

Study on mechanical characters of high-filled subgrade compacted soil by experiment

作　　者：王智超[1] 罗迎社[2] 龚卫锋 邓旭华[1] 

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105 [2]中南林业科技大学流变力学与材料工程研究所,湖南长沙410004 [3]益阳高新区建设局,湖南益阳413000

出　　处：《铁道科学与工程学报》2010年第4期74-77,共4页Journal of Railway Science and Engineering

基　　金：湖南省教育厅资助科研项目(06C843)

摘　　要：在传统土工直剪和固结实验装置的基础上,通过对实验方案的适当改进,获得了高填方路基压实土的剪切应力-应变和固结应力-应变实验曲线,并对其力学特点进行了较深入的分析。结果表明：在高填方路基中路堤压实土剪切破坏应变在10%~20%,短期固结应变在1.5%~2%,长期固结应变增长在0.5%,其自身的变形不可忽略。Based on the conventional geotechnical direct - shear and consolidation stress -strain curves of high -filled subgrade c and consolidation experimental devices, shear ompacted soil is obtained by improving the experimental scheme. Furthermore, its mechanical characters was analyzed. The result shows that the shear failure strain of compacted soil in high embankment is about 10% -20%, its short -term consolidate strain is about 1. 5% -2% , and its long- term growth strain is 0. 5% , so deformation of high embankment cannot be neglected.

关 键 词：压实土 应力应变 粘聚内力 内摩擦角 

分 类 号：O37[理学—流体力学]