工程岩体非线性蠕变损伤力学模型及其应用
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
针对元件组合流变模型多半反映的是蠕变线性关系或发生加速蠕变时间过快的不足,根据工程现场压缩蠕变试验成果,提出工程岩体流变效应的损伤因子,建立非线性损伤黏弹塑性本构模型,通过ABAQUS编制程序并采用压缩蠕变试验的数值模拟,验证蠕变模型和编制程序的正确性。最后,将此非线性蠕变损伤模型应用于大岗山水电站地下厂房的施工开挖全过程的数值仿真,并对考虑损伤和未考虑损伤2种工况的计算结果进行对比分析,结果表明,考虑岩体损伤工况下的围岩体塑性屈服范围和程度、洞壁位移值趋势能更客观地反映工程岩体的变形和破坏特征。
Aiming at the shortcomings of component creep models,such as linear constitutive relationships,converging easily and entering accelerative stage too quickly,a new empirical nonlinear damage viscoelasto-plastic model which can reflect rock creep damage effect is put forward based on creep experiments.The model is verified to be correct by means of simulating a uniaxial compression numerical test which makes use of user′s subroutines of ABAQUS.Finally,the model is applied to simulating the whole construction process of Dagangshan underground powerhouse under two working conditions,with and without considering damage factor,respectively.By comparing the results two working conditions,it is demonstrated that the results of considering damage factor working condition can bring forward more reasonable reference than that of without considering damage factor,especially in plastic zone,damage degree and deformation of rock mass.
引文
[1]安欧.构造应力场[M].北京:地震出版社,1992.(AN Ou.Tectonic stress field[M].Beijing:Earthquake Publishing House,1992.(in Chinese))
    [2]章根德,何鲜,朱维耀.岩石介质流变学[M].北京:科学出版社,1999.(ZHANG Gende,HE Xian,ZHU Weiyao.Rheology of rock media[M].Beijing:Science Press,1999.(in Chinese))
    [3]陈景涛.高地应力下硬岩本构模型的研究和应用[博士学位论文][D].北京:中国科学院研究生院,2006.(CHEN Jingtao.Study of constitutive model for hard rock under high geostress condition and its application to engineering[Ph.D.Thesis][D].Beijing:Graduate University of Chinese Academy of Sciences,2006.(in Chinese))
    [4]SZCZEPANIK S D.Time-dependent acoustic emission studies of potash[C]//Rock Mechanics as a Multidisciplinary Science.Rotterdam:A.A.Balkema,1991:471-479.
    [5]CHEN W Z,TAN X J,YU H D,et al.A fully coupled thermo-hydro-mechanical model for unsaturated porous media[J].Journal of Rock Mechanics and Geotechnical Engineering,2009,1(1):31-40.
    [6]孙钧.岩石流变力学及其工程应用研究的若干进展[J].岩石力学与工程学报,2007,26(6):1082-1106.(SUN Jun.Rockrheological mechanics and its advance in engineering applications[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(6):1082-1106.(in Chinese))
    [7]孙钧.岩石非线性流变特性及在地下结构工程中的应用研究[R].上海:同济大学地下工程系,1990.(SUN Jun.Nonlinear rheological behavior for rocks and the application study of underground structures[R].Shanghai:Department of Underground Engineering,Tongji University,1990.(in Chinese))
    [8]徐卫亚,杨圣奇,谢守益,等.绿片岩三轴流变力学特性的研究(II):模型分析[J].岩土力学,2005,26(5):693-698.(XU Weiya,YANG Shengqi,XIE Shouyi,et al.Investigation on triaxial rheological mechanical properties of greenschist specimen(II):model analysis[J].Rock and Soil Mechanics,2005,26(5):693-698.(in Chinese))
    [9]徐卫亚,杨圣奇,褚卫江.岩石非线性黏弹塑性流变模型(河海模型)及其应用[J].岩石力学与工程学报,2006,25(3):433-447.(XU Weiya,YANG Shengqi,CHU Weijiang.Nonlinear viscoelasto-plastic rheological model(Hohai model)of rock and its engineering application[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(3):433-447.(in Chinese))
    [10]蒋昱州,张明鸣,李良权.岩石非线性黏弹塑性蠕变模型研究及其参数识别[J].岩石力学与工程学报,2008,27(4):832-839.(JIANG Yuzhou,ZHANG Mingming,LI Liangquan.Study of nonlinear viscoelasto-plastic creep model of rock and its parameter identification[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(4):832-839.(in Chinese))
    [11]陈卫忠,朱维申,李术才.节理岩体断裂损伤耦合的流变模型及其应用[J].水利学报,1999,(12):33-37.(CHEN Weizhong,ZHU Weishen,LI Shucai.Coupled rheological model study of fracture-damage problem for jointed rocks and its applications[J].Journal of Hydraulic Engineering,1999,(12):33-37.(in Chinese))
    [12]陈卫忠,伍国军,戴永浩,等.锦屏二级水电站深埋引水隧洞稳定性研究[J].岩土工程学报,2008,30(8):1184-1190.(CHEN Weizhong,WU Guojun,DAI Yonghao,et al.Stability analysis of diversion tunnel for Jinping II Hydropower Station[J].Chinese Journal of Geotechnical Engineering,2008,30(8):1184-1190.(in Chinese))
    [13]陈卫忠,王者超,伍国军,等.盐岩非线性蠕变损伤本构模型及其工程应用[J].岩石力学与工程学报,2007,26(3):467-472.(CHEN Weizhong,WANG Zhechao,WU Guojun,et al.Nonlinear creep damage constitutive model of rock salt and its application to engineering[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(3):467-472.(in Chinese))
    [14]陈卫忠,伍国军,戴永浩,等.废弃盐穴地下储气库稳定性研究[J].岩石力学与工程学报,2006,25(4):848-854.(CHEN Weizhong,WU Guojun,DAI Yonghao,et al.Stability analysis of abandoned salt caverns used for underground gas storage[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(4):848-854.(in Chinese))
    [15]王安明,杨春和,陈剑文.层状盐岩体非线性蠕变本构模型[J].岩石力学与工程学报,2009,28(增1):2708-2714.(WANGAnming,YANG Chunhe,CHEN Jianwen.Nonlinear creep constitutive model of bedded salt rock[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(Supp.1):2708-2714.(in Chinese))
    [16]冒海军,杨春和,刘江,等.板岩蠕变特性试验研究与模拟分析[J].岩石力学与工程学报,2006,25(6):1204-1209.(MAO Haijun,YANG Chunhe,LIU Jiang,et al.Testing study and modeling analysis of creep behavior of slates[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(6):1204-1209.(in Chinese))
    [17]张强勇,杨文东,张建国,等.变参数蠕变损伤本构模型及其工程应用[J].岩石力学与工程学报,2009,28(4):732-739.(ZHANG Qiangyong,YANG Wendong,ZHANG Jianguo,et al.Variable parameters-based creep damage constitutive model and its engineering application[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(4):732-739.(in Chinese))

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心