摘要
采用FLAC3D建立层状岩体计算模型,分析相同长径比和不同长径比情况下层状岩体的尺寸效应机理,发现:1)对于相同长径比情况下,增加岩样直径或者高度均会导致层状岩体的压缩强度呈现非线性下降;2)不同倾角情况下,随着长径比H/D的增大,层状岩体的压缩强度表现出较为不一致的规律,岩体的强度并不是简单地取决于长径比这个变量,而是受到试样高和直径之间某个函数的影响。
The model of stratified rock mass is founded by FLAC3D, the size effect of stratified rock mass is analyzed for the situation of the same and different length-diameter ratio, which shows that： 1） for the same length-diameter ratio, the increase of diameter or the height leads to the decrease of compressive strength of stratified rock mass; 2） for rock samples with different structure plane inclination, with the increase of length-diameter ratio H/D, the discipline of compressive strength shows differently. The strength of rock mass depends on the certain function of length and diameter, instead of the simply parameter H/D.
出处
《工业建筑》
CSCD
北大核心
2009年第5期81-83,105,共4页
Industrial Construction
基金
国家自然科学基金资助项目(50878212)
湖南省交通厅科研基金资助项目(200020)
中南大学博士后基金资助项目(200717)
关键词
层状岩体
压缩强度
尺寸效应
数值分析
stratified rock mass
compressive strength
size effect
numerical analysis
