马天辉

个人信息Personal Information

副研究员

博士生导师

硕士生导师

性别:男

毕业院校:东北大学

学位:博士

所在单位:土木工程系

学科:岩土工程

办公地点:土木4#楼330

联系方式:QQ: 19928600 wechat: tianhuima

电子邮箱:tianhuima@dlut.edu.cn

扫描关注

出版著作和论文

当前位置: 君子自强不息 >> 科学研究 >> 出版著作和论文

Numerical simulation on dam cracking analysis using DFPA code

点击次数:

论文类型:会议论文

发表时间:2014-09-22

收录刊物:EI、CPCI-S、Scopus

页面范围:1955-1960

摘要:In this study, A code of practice for three dimensional cracking and a failure process analysis of high arch dams, based on the finite element method, Dam Failure Process Analysis ( DFPA) has been employed. In this code, by changing mesh density, consideration of heterogeneity when calculating the elements is achieved. Random strength and elastic modulus are assigned to the elements in accordance with a Weibull distribution. The dam cracking and failure process associated seismicity accumulation can be analyzed using acoustic emissions. The proposed method was applied in investigating the cracking, failure mechanism, and overall stability of the Xiluodu high arch dam. The numerical mesh model was fine, and the total number of hexahedral elements was 300 million. The analysis results were used to successfully guide the design of the Xiluodu high arch dam. The DFPA analysis results, compared with those derived by the Tfine code, and the 3D geo-mechanical model test show that the DFPA code is effective in fully simulating the failure processes of the dam and foundation. The proposed DFPA method may also be of value to the reinforcement design and construction of high arch dams, associated with similar hydropower projects worldwide which are also located in complicated rock foundation areas.