An Efficient Transmitting Boundaries for Seismic Analysis of the Structure-Foundation
Abstract
The transmitting boundary (TB) is very important for seismic analysis of the structure-foundation. In this paper, the transmitting boundary in the finite element model for seismic analysis of the structure-foundation is studied. First, the modified viscous boundary is developed to address the non-plane wave behavior of the structure-foundation. Then, the seismic analysis of the model for the structure-foundation is formulated, where a potential earthquake is defined by the incoming waves, and the truncated boundary is imposed with the transmitting boundary conditions. Further, the tied boundary model and the transmitting-layer boundary model are set up to address the radiated waves in the model of the structure-foundation. Finally, the transmitting-layer boundary model has been extended for the structure-foundation subject to obliquely and horizontally incoming seismic waves. In comparison with the various schemes of TBs, the proposed transmitting boundaries have advantages of efficiency, convenience and versatility.
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