An E cient Seismic Analysis Procedure for Torsionally Coupled Multistory Buildings In

An E cient Seismic Analysis Procedure for Torsionally Coupled Multistory Buildings In - Printable Version

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An E cient Seismic Analysis Procedure for Torsionally Coupled Multistory Buildings In - TAFATNEB - 09-14-2013

An E cient Seismic Analysis Procedure for Torsionally Coupled Multistory Buildings Including Soil-Structure Interaction

In this paper, a simpli ed methodology of analysis for the seismic response of 3-dimensional irregular
high-rise buildings on a rigid footing resting on the surface of a linear elastic half-space is formulated.
An e cient method using modal decomposition and carried out in the frequency domain by using the
fast Fourier transform to obtain the structural response of torsionally asymmetric buildings, including soilstructure
interaction e ects, is presented. Applying this algorithm, full advantage is taken of classical normal
mode approximation, and the interaction problem is solved easily and e ectively within the framework of
the Fourier-transformed frequency domain analysis for a xed-base structure. The matrix formulation of
this method produces accurate approximation with less computational e ort, in spite of using the frequency
dependent impedance functions.

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