Title of Paper:Numerical simulation on dam cracking analysis using DFPA code

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Date of Publication:2014-09-22

Included Journals:EI、CPCI-S、Scopus

Page Number:1955-1960

Abstract: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.