三轴压缩加载频率对花岗岩疲劳特性影响试验

详细信息    查看全文 | 推荐本文 |

英文篇名：Effect of loading frequency on fatigue characteristics of granite under tri-axial compression 作者：黄正均 ; 赵星光 ; 蔡美峰 ; 任奋华 ; 郭奇峰 英文作者：HUANG Zhengjun;ZHAO Xingguang;CAI Meifeng;REN Fenhua;GUO Qifeng;School of Civil and Resource Engineering,University of Science and Technology Beijing;State Key Laboratory of the Education Ministry for High-Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing;Beijing Research Institute of Uranium Geology; 关键词：岩石疲劳 ; 加载频率 ; 损伤 ; 疲劳寿命 英文关键词：rock fatigue;;loading frequency;;damage;;fatigue life 中文刊名：ZGKA 英文刊名：China Mining Magazine 机构：北京科技大学土木与资源工程学院;北京科技大学金属矿山高效开采与安全教育部重点实验室;核工业北京地质研究院; 出版日期：2019-04-15 出版单位：中国矿业 年：2019 期：v.28;No.260 基金：国家自然科学基金项目资助(编号:51774022);; 国家重点研发计划项目资助(编号:2016YFC0600703) 语种：中文; 页：ZGKA201904029 页数：7 CN：04 ISSN：11-3033/TD 分类号：153-158+165

摘要

通过选取岩性均一性好的北山花岗岩,并采用MTS 815岩石力学试验机对其进行三轴条件下的动态疲劳压缩试验,以探讨加载频率对岩石变形特性和损伤演化的影响。通过试验分析,得出花岗岩疲劳变形过程均可分为"疏-密-疏"三个阶段,与岩性和试验条件无关,且其损伤过程同样主要受侧向膨胀的主导作用。此外,频率的变化不会改变岩样破坏时的极限变形量,可采用弹性模量、塑性体积应变,以及横向应变等方法对岩石疲劳损伤过程进行合理描述;同时还揭示了频率变化对岩样疲劳寿命的影响规律。
        The dynamic fatigue compression test under the tri-axial condition is carried out by using the MTS815 rock mechanics test system to Beishan granite with good lithology uniformity to investigate the influence of loading frequency on rock deformation characteristics and damage evolution.Through the experimental analysis,it is concluded that the fatigue deformation process of granite can be divided into three stages"sparse-density-sparse",which has nothing to do with lithology and test conditions;and its damage process is also mainly dominated by lateral expansion.In addition,the change of frequency does not change the ultimate deformation of rock sample failure.The fatigue damage process of rock sample can be reasoned by plastic volumetric strain method and elastic modulus method.The influence of the frequency for fatigue life of rock sample is also revealed.

引文

[1]蔡美峰,何满潮,刘东燕.岩石力学与工程[M].北京:科学出版社,2002.
    [2]宫凤强,张乐,李夕兵,等.不同预静载硬岩在动力扰动下断裂特性的试验研究[J].岩石力学与工程学报,2017,36(8):1-14.GONG Fengqiang,ZHANG Le,LI Xibing,et al.Experimental study on the fracture of hard rock under dynamic disturbance with different pre-static load[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(8):1-14.
    [3]梅年峰.循环动荷载作用下脆性岩石疲劳损伤力学特性研究[D].武汉:中国地质大学(武汉),2014.
    [4]郭建强,黄质宏.循环荷载作用下岩石疲劳本构模型初探[J].岩土工程学报,2015,37(9):1698-1704.GUO Jianqiang,HUANG Zhihong.Constitutive model for fatigue of rock under cyclic loading[J].Chinese Journal of Geotechnical Engineering,2015,37(9):1698-1704.
    [5]陈岩.采动影响下岩石的变形破坏行为及非线性模型研究[D].北京:中国矿业大学(北京),2018.
    [6]RAY S K,SARKAR M,SINGH T N.Effect of cyclic loading and strain rate on the mechanical behavior of sandstone[J].International Journal of Rock Mechanics and Mining Sciences,1999,36(4):543-549.
    [7]葛修润,蒋宇,卢允德,等.周期荷载作用下岩石疲劳变形特性试验研究[J].岩石力学与工程学报,2003,22(10):1581-1585.GE Xiurun,JIANG Yu,LU Yunde,et al.Testing study on fatigue deformation law of rock under cyclic loading[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(10):1581-1585.
    [8]张世殊,刘恩龙,张建海.砂岩在低频循环荷载作用下的疲劳和损伤特性试验研究[J].岩石力学与工程学报,2014,33(S1):3212-3218.ZHANG Shishu,LIU Enlong,ZHANG Jianhai.Experimental study of fatigue damage properties of sandstone samples under cyclic loading with low frequencies[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(S1):3212-3218.
    [9]WANG Z C,LI S C,QIAO L P,et al.Fatigue behavior of granite subjected to cyclic loading under triaxial compression condition[J].Rock Mechanics and Rock Engineering,2013,46:1603-1615.
    [10]LIU E L,HE S M.Effects of cyclic dynamic loading on the mechanical properties of intact rock samples under confining pressure conditions[J].Engineering Geology,2012,125(27):81-91.
    [11]HEAP M J,FAULKNER D R.Quantifying the evolution of static elastic properties as crystalline rock approaches failure[J].International Journal of Rock Mechanics and Mining Sciences,2008,45:564-573.
    [12]BAGDE M N,PETROV.Waveform effect on fatigue properties of intact sandstone in uniaxial cyclical loading[J].Rock Mechanics and Rock Engineering,2005,38(3):169-196.
    [13]赵星光,马利科,苏锐,等.北山深部花岗岩在压缩条件下的破裂演化与强度特性[J].岩石力学与工程学报,2014,33(S2):3665-3675.ZHAO Xingguang,MA Like,SU Rui,et al.Fracture evolution and strength characteristics of Beishan deep granite under compression conditions[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(S2):3665-3675.
    [14]黄正均,赵星光,李远,等.体积应变率对北山花岗岩疲劳特性的影响[J].岩石力学与工程学报,2018,37(5):1161-1168.HUANG Zhengjun,ZHAO Xingguang,LI Yuan,et al.Influence of volumetric strain ratio on the fatigue characteristics of Beishan granite[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(5):1161-1168.
    [15]黄正均,赵星光,张磊.不同围压下花岗岩三轴压缩疲劳特性试验[J].实验室研究与探索,2018,37(8):15-19.HUANG Zhengjun,ZHAO Xingguang,ZHANG Lei.Experiment on the fatigue characteristics of granite under different confining pressures[J].Research and Exploration in Laboratory,2018,37(8):15-19.
    [16]XIAO J Q,DING D X,JIANG F L,et al.Fatigue damage variable and evolution of rock subjected to cyclic loading[J].International Journal of Rock Mechanics and Mining Sciences,2010,47(3):461-468.
    [17]EBERHARDT E,STEAD D,STIMPSON B.Quantifying progressive pre-peak brittle fracture damage in rock during uniaxial compression[J].International Journal of Rock Mechanics and Mining Sciences,1999,36(3):361-380.