三维含表面裂隙岩体裂纹扩展数值模拟研究  

Three-dimensional numerical simulation of surface crack propagation of rock under uniaxial compression

作　　者：魏玉寒 朱珍德[1,2] 曹加兴 田源[1,2] 邰俊[1,2] WEI Yuhan;ZHU Zhende;CAO Jiaxing;TIAN Yuan;TAI Jun(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing,210098,China;Jiangsu Research Center for Geotechnical Engineering Technology,Hohai University,Nanjing,210098,China;China Design Group Limited Liability Company,Nanjing,210005)

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学江苏省岩土工程技术工程研究中心,江苏南京210098 [3]中设设计集团股份有限公司,江苏南京210005

出　　处：《河北工程大学学报（自然科学版）》2018年第1期24-27,31,共5页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(51379065,51579081);国家“973”计划(2011CB013504)

摘　　要：利用ABAQUS软件的扩展有限元法对不同倾角的半椭圆形表面裂纹岩体进行数值模拟研究,结果表明:随着裂隙倾角的增大裂纹峰值强度也逐渐增大,并且发现裂隙的倾角对于表面裂纹影响比较大,Ⅰ型应力强度因子在裂纹扩展中起到重要的作用。In order to discuss and investigate the influence of the angle of inclination on the crack initiation,propagation and damage,the extended finite element method in the ABAQUS platform is used to simulate the semi-circular surface cracked rock mass with different angles.The results show that with the increase of fracture inclination,the peak strength of crack increases.The angles of cracks have magnificent impact on the surface cracks.Moreover,the I type stress intensify factor plays an important role in the process of crack propagation.

关 键 词：岩石力学 三维表面裂纹 ABAQUS 扩展有限单元法 应力强度因子 

分 类 号：TU452[建筑科学—岩土工程]