Seismic soil-structure interaction analysis by direct boundary element methods

Upon establishing the mathematical framework necessary for a proper understanding of the analytical theory\ a regularized form of the conventional direct boundary integral equation formulation for three! dimensional elastodynamics is presented for a general anisotropic medium[ Founded on the basis of a full decomposition of the Green|s functions into regular and singular parts\ the alternative boundary integral equation format is compact and without demanding mathematical and numerical complexities such as Cauchy principal values[ Extended to deal with general seismic soil!structure interaction problems in semi! in_nite media\ the formulation is implemented computationally together with a rigorous treatment of singular dynamic multi!layered viscoelastic half!space Green|s functions and interfacial boundary tractions arising in typical soil!structure!foundation con_gurations[ A set of new benchmark numerical results are included