岩土力学2018，Vol.39Issue(2)：728-734,7.DOI:10.16285/j.rsm.2016.0280
岩体裂隙模拟的扩展有限元法应用研究
Application of extended finite element method in modelling fracture of rock mass
摘要
Abstract
Faults.joints and fractures are widely distributed in rock masses,and these discontinuities of existence and development have a significant effect on the whole strength,deformation and stability of rock mass.Thus,studying the evolvement of initiation,propagation and coalescence of primary flaws is of significance in theory and practice for estimating the safety and reliability of rock engineering.The extended finite element method (XFEM) is a numerical method for modelling discontinuities within the classical finite element framework.Since the computation mesh in XFEM is independent of the discontinuities,re-meshing for moving discontinuities can be overcome.Owing to the unique advantage for fracture analysis,XFEM has been employed to simulate hydraulic fracture and crack propagation of rock mass.The basic theory of XFEM and its application in simulating crack propagation are studied in detail.The numerical model of solving the frictional contact problem and hydraulic fracture propagation is developed.The calculation model is used to solve some geotechnical problems,such as deformation and failure of jointed rock slopes and modelling fracture propagation of gravity dam foundations.关键词
扩展有限元法/岩体裂隙/摩擦接触/应力强度因子Key words
extended finite element method/fracture of rock mass/friction contact/stress intensity factor分类
建筑与水利引用本文复制引用
罗先启,郑安兴..岩体裂隙模拟的扩展有限元法应用研究[J].岩土力学,2018,39(2):728-734,7.基金项目
国家重点基础研究发展计划(973)资助项目(No.2011CB013505) （973）
国家自然科学基金资助项目(No.51279100) （No.51279100）
浙江省自然科学基金资助项目(No.LQ18E090003).This work was supported by the National Program on Key Basic Research Project of China (973 Program) (2011CB013505),the National Natural Science Foundation of China (51279100) and the Zhejiang Provincial Natural Science Foundation of China (LQ18E090003). （No.LQ18E090003）
