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Indexed by:会议论文

Date of Publication:2012-01-01

Included Journals:CPCI-S

Volume:28

Page Number:224-229

Key Words:dynamic structure-foundation interaction; scaled boundary finite element method; transmitting boundary; gravity dam; unbounded domains

Abstract:The analysis of the system of the gravity dam-reservoir-foundation is calculated using the Scaled Boundary Finite Element Method (SBFEM). The unbounded foundation is modeled by a high-order transmitting boundary based on the continued-fraction solution of the dynamic-stiffness matrix. The coefficient matrices of the continued fraction are evaluated recursively through the scaled boundary finite element equation in dynamic stiffness. The convergence of the high-order transmitting boundary is demonstrated by the numerical examples. Comparisons with the analytical solutions show that the method possesses high accuracy. The results are compared with the mass-less base model. In conclusion, the approach is effective and suitable for the large-scale structure-foundation interaction analysis in frequency domain. (C) 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Society for Resources, Environment and Engineering