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Reduction of seismic wave energy of SH pulse by nonlinear soil

By Vlado Gicev, Mihailo Trifunac and Maria Todorovska


Two-dimensional models of a building on a rectangular, flexible foundation in nonlinear soil are analyzed. The building is assumed to be linear, but the foundation and the soil can experience nonlinear deformations. It is shown that the wave energy dissipated during the development of nonlinear strains in the soil can consume a significant part of the input wave energy, and thus less energy is available for excitation of the building. The results help explain why, during the 1994 Northridge earthquake in California, the damage to residential buildings in the areas that experienced large strains in the soil was absent or significantly reduced. The results also suggest major advantages that result from the designs that consider nonlinear soil response

Topics: Earth and related environmental sciences, Matematics, Physical sciences
Year: 2012
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