On the Filtering Properties of Foundations of Earthquake-Resistant Buildings

Resumo

The results of full-scale experiment (M. D. Trifunak, S. S. Ivanovich, M. I. Todorovska, E. I. Novikova, and A. A. Gladkov, Soil Dynamics and Earthquake Engineering, 18, No. 3, 169–187 (1999)) are discussed. The actual wave pattern in foundation bed of a sevenstory building that shows the nonuniformity of the soil properties and the displacement of the center of stiffness of the foundation, resulting in appreciable torsional oscillations, was obtained in the course of the experiment. Analysis of the experimental results will be helpful in the calculation of the earthquake-resistance of the foundations and foundation beds and monitoring their state after strong earthquakes.