摘要
为减少级配碎石重复加载动三轴试验量,采用Morh-Coulomb塑性模型,对级配碎石重复加载动三轴试验进行了有限元仿真,并对仿真结果用Pérez永久变形预估模型进行了拟合。结果表明:重复加载试验与其有限元仿真得到的永久变形发展规律相同,对仿真结果进行修正后,可用有限元仿真来代替部分室内重复加载试验。
In order to reduce the amount of dynamic triaxial tests for repeated loading of graded broken stone, Morh-Coulomb plasticity model is used to carry out finite element simulation of the test and then the simulated result is fitted with the Perez prediction model of permanent deformation. The result shows that the development laws obtained by means of repeated loading test and its finite element simulation are the same. After the simulated result is adjusted, the finite element simulation could replace part of indoor repeated loading tests.
出处
《路基工程》
2012年第3期51-52,56,共3页
Subgrade Engineering
基金
国家自然科学基金项目(50608007)
关键词
道路工程
级配碎石
永久变形
数值仿真
预估模型
mad engineering
graded broken stone
permanent deformation
numerical simulation
prediction model
