Viscoelasto-plastic rheological model for brittle hard rock

被引：7
|
作者：
Xiong L. [1 ,2 ]
Yang L. [1 ,2 ]
机构：
[1] Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University
[2] Faculty of Architectural Civil Engineering and Environment, Ningbo University
来源：
Tongji Daxue Xuebao/Journal of Tongji University | 2010年 / 38卷 / 02期
关键词：
Hydropower station; Nonlinear rheological model; Sandstone; Triaxial compression creep test;
D O I：
10.3969/j.issn.0253-374x.2010.02.007
中图分类号：
学科分类号：
摘要：
In order to build an appropriate rheological model for brittle hard rock, a nonlinear viscous component, whose viscous coefficient was decay function of stress and time, was built to replace the viscous component of Bingham model, and a modified Bingham model was obtained. The nonlinear viscoelasto-plastic rheological model for hard rock was obtained based on the modified Bingham model and six-component linear viscoelastic model. With this new nonlinear viscoelasto-plastic rheological model, the accelerated creep property can be studied. Finally, this new model was verified by creep test curve of sandstone from left bank slope at Jinping First Stage Hydropower Station. The research results show that the new nonlinear visoelasto-plastic rheological model curve and experimental curve approximately coinside with each other, which verifies that the new nonlinear visoelasto-plastic rheological model is of high accuracy.
引用
收藏
页码：188 / 193
页数：5
相关论文
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