岩土力学2011，Vol.32Issue(11)：3301-3305,5.
红砂岩长期强度特性的试验研究
Testing study of long-term strength characteristics of red sandstone
摘要
Abstract
Rheological property is one of the most important mechanical properties of rock. Great importance shall be attached to long-term strength of the rock among mechanical properties in most geotechnical engineering, while the present study of it is asymmetrical compared with the creep property. Creep test is the most common and practical way to confirm long-term strength of rock. Based on uniaxial compression creep test of red sandstone rock in the CSS-2950 biaxial rheological testing machine; theory accuracy and operability of transition creep and isochronous curve methods are discussed in the research of testing long-term strength of the rock. Meanwhile, a new method to confirm long-term strength of the rock is proposed; and the time for rock to be destroyed under load is predicted by the combination of creep curve and stress-strain curve. The results show that the combination of creep curve and stress-strain curve plays a leading role in the confirmation of long-term strength of the rock in geotechnical engineering field.关键词
应力-应变曲线/蠕变曲线/数值拟合/岩石长期强度/岩石破坏时间预测Key words
stress-strain curve/creep curve/numerical fitting/long-term strength of rock/time prediction of rock failure分类
建筑与水利引用本文复制引用
沈明荣,谌洪菊..红砂岩长期强度特性的试验研究[J].岩土力学,2011,32(11):3301-3305,5.基金项目
国家自然科学基金(No.41072203) （No.41072203）
高等学校博士学科点专项科研基金(No.20090072110012). （No.20090072110012）
