摘要
基于现场路基填土的载荷试验的结果,分析并确定了在多年冻土区环境情况下,路基填土在经历了一个冻融循环后的承载力、变形模量、剪切模量等力学参数.并就该土层位移变形模式进行了探讨且检验了其正确性.结果表明:将冻土理想化为三维弹性连续介质是较为合理的,其位移变形的理论计算值与实测值较为吻合.
Based on the results of the roadbed soil through plate loading test, under the environment of the permafrost, the mechanical parameters such as bearing capacity, deformation modulus, shear modulus were analyzed and determined after the roadbed soil experienced a freezing and thawing cycle. The displacement and deformation model of soil was discussed and its correctness was proved. The results indicate that the way that the freezing soil are regard as a three-dimensional and elastic continuous medium is reasonable. The theoretical values of the deformation are agreement with the measuring values.
出处
《重庆交通学院学报》
2007年第3期88-91,共4页
Journal of Chongqing Jiaotong University
基金
重庆市教育委员会科学基金资助项目(kJ060403)
关键词
青藏铁路
载荷试验
多年冻土
Qinghai-Tibet Railway
plate loading test
permafrost
