大理岩单轴压缩过程的强度确定及其应变率影响  

Analyses on Strength of Marble under Uniaxial Compression and the Influences of Strain Rates

作　　者：徐松林[1] 吴文[1] 张华[1] 吴玉山[1] 

机构地区：[1]中国科学院武汉岩土力学研究所,武汉430071

出　　处：《地下空间》2001年第4期272-275,279,共5页Underground Space

摘　　要：大理岩试件单轴压缩过程中 ,其破坏面在上下两个端面附近有剪切破坏的痕迹。根据此现象进行强度确定 ,其结果与三轴压缩过程的强度值基本一致。随着应变率的增长 ,大理岩表现出 C值增大 ,φ值减小的趋势。Usually the shear fracture occurs in the rupture surface near the top and the bottom of marble specimens under uniaxial compression. Henceforth, the strength of specimens could be determined on account of its complex distribution of stress. The result consists well with the strength of triaxial compression. With the increase of strain rates, the C value increased while φ decreased. [

关 键 词：大理岩 单轴压缩 强度 应变率 

分 类 号：P588.313[天文地球—岩石学]