疲劳载荷对岩石物理力学性质的影响  

Influence of fatigue loading on physical mechanical characteristics of rock

作　　者：席道瑛[1] 刘云平[1] 刘小燕[1] 单钰铭[2] 刘维国[2] 

机构地区：[1]中国科学技术大学地球与空间科学系 [2]成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059

出　　处：《岩土工程学报》2001年第3期292-295,共4页Chinese Journal of Geotechnical Engineering

基　　金：成都理工学院国家重点 (专业 )实验室资助! (PLC990 6)

摘　　要：在MTS上进行了疲劳加载实验 ,取得了南京砂岩的模量、泊松比、波速都随频率的增高呈非线性增大 ,强度具有明显的各向异性。饱和大理岩具有显著的应力振幅效应和频率效应以及各向异性。Fatigue loading experiment is conducted on MTS.From the results it can be gained that the modulus,Poisson's ratio and wave velocity of Nanjing sandstone non linearly increase as frequency rising,and the strength is obviously anisotropic.Saturated marble is obviously effected by the amplitude and frequency of applied stress,and is also anisotropic.The influence of stress amplitude on marble is much larger than that of frequency.

关 键 词：岩石 物理力学性质 疲劳载荷 应力振幅 

分 类 号：TU452[建筑科学—岩土工程]