摘要
通过冻融循环后的粉质黏土的动三轴试验,研究了粉质黏土作为路基填料的动力特性,得出了动强度和循环荷载次数及冻融循环次数的数量关系和动模量与冻融循环次数的关系曲线。建立了动模量损失模型,能够预测每一次冻融循环后的动强度和最大动模量。通过与试验对比可知,预测模型具有较高的精度,可以用来评估冻融循环对粉质黏土路基使用寿命的影响。
From the dynamic triaxial tests on the silty clay after freeze-thaw cycles the dynamic characteristics of silty clay as roadbed filling were studied. The quantitative relationship between the dynamic strength and the number of dynamic load cycles and the freeze-thaw cycles, the relationship curve between the dynamic module and the the number of freeze-thaw cycles were obtained. A dynamic module damage model was built to predict the dynamic strength and maximum dynamic module of the silty clay after every freeze thaw cycle. The built prediction model is characterized by high precision, can be used to evaluate the effect of the freeze-thaw cycles on the service life of the silty clay roadbed.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2007年第4期790-793,共4页
Journal of Jilin University:Engineering and Technology Edition
基金
高等学校博士学科点专项科研基金资助项目(20030183025)
吉林大学创新基金资助项目
关键词
道路工程
粉质黏土
冻融循环
动强度
动模量
预测模型
road engineering
silty clay
freeze-thaw cycles
dynamic strength
dynamic module prediction model
