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Keywords: risk analysis, hardfill, performance, dams, reliability, FLAC-3D.

Summary

This paper presents the seismic performance evaluation of a typical hardfill dam subjected to two strong ground motions using a novel practice-oriented approach. This approach allows revising both state limits of failure and service simultaneously. The bivariate point estimate method (BPEM) coupled with tri-dimensional finite difference models, is used to conduct the seismic dam-foundation-embankment interaction analyses accounting directly for the variability in the hardfill strength and deformability parameters. A series of three dimensional finite difference models were developed using the program FLAC-3D. The stress-strain relationship for the hardfill was represented using the Mohr-Coulomb failure criterion. The dam was subjected to a seismic environment established from the strong ground motion recorded near the Infiernillo Mexican Dam, during the 1985 Mw 8.1 Michoacán earthquake, scaled to two seismic intensities. The probability of seismic failure from uncertainties in the material properties and structural dam reliability was assessed, along with the vertical and horizontal dam displacements at the crest and dam body. The proposed methodology permits the identification of potentially weak areas within the dam body, and represents a rational procedure to estimate the seismic dam performance under moderate to strong shaking.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 154 Seismic Response of Hardfill Dams during Extreme Events J.M. Mayoral¹, M.P. Romo¹, D. Vital¹, N. Sarmiento¹, E. Castañon¹, H. Marengo² and A. Díaz Barriga² ¹Institute of Engineering, National University of Mexico, Mexico ²Federal Electricity Commission, Mexico doi:10.4203/ccp.108.154 purchase the full-text of this paper Full Bibliographic Reference for this paper , "Seismic Response of Hardfill Dams during Extreme Events", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 154, 2015. doi:10.4203/ccp.108.154 Keywords: risk analysis, hardfill, performance, dams, reliability, FLAC-3D. Summary This paper presents the seismic performance evaluation of a typical hardfill dam subjected to two strong ground motions using a novel practice-oriented approach. This approach allows revising both state limits of failure and service simultaneously. The bivariate point estimate method (BPEM) coupled with tri-dimensional finite difference models, is used to conduct the seismic dam-foundation-embankment interaction analyses accounting directly for the variability in the hardfill strength and deformability parameters. A series of three dimensional finite difference models were developed using the program FLAC-3D. The stress-strain relationship for the hardfill was represented using the Mohr-Coulomb failure criterion. The dam was subjected to a seismic environment established from the strong ground motion recorded near the Infiernillo Mexican Dam, during the 1985 Mw 8.1 Michoacán earthquake, scaled to two seismic intensities. The probability of seismic failure from uncertainties in the material properties and structural dam reliability was assessed, along with the vertical and horizontal dam displacements at the crest and dam body. The proposed methodology permits the identification of potentially weak areas within the dam body, and represents a rational procedure to estimate the seismic dam performance under moderate to strong shaking. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
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