Modal combination method for earthquake-resistant design of tall structures to multid
Modal combination method for earthquake-resistant design of tall structures to multidimensional excitations

Author: HONG-NAN LI, LI SUN1 AND GANGBING SONG | Size: 336 KB | Format: PDF | Quality: Unspecified | Publisher: HONG-NAN LI, LI SUN1 AND GANGBING SONG | Year: 2004 | pages: 19

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This paper presents a modal combination method for earthquake-resistant design of structures to multidimensional
seismic excitations. With the assumption that an earthquake is a stationary random vibration, the correlation
among the input components is considered in the proposed method. The relationship coefficients between
the translational component and rotational component is then derived in the frequency domain. The combination
method of response spectrum for structural response to multidimensional earthquakes is proposed based on
the random vibration theory. With the help of the derived modal correlation coefficients, the formulation for
structural response to the two-dimensional earthquake excitations can be obtained. Numerical examples
demonstrate the effectiveness and high precision of the proposed methods.

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