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An earthquake response spectrum method for linear light secondary substructures

By G. Muscolino and Alessandro Palmeri


YesEarthquake response spectrum is the most popular tool in the seismic analysis and design of\ud structures. In the case of combined primary-secondary (P-S) systems, the response of the supporting P\ud substructure is generally evaluated without considering the S substructure, which in turn is only required\ud to bear displacements and/or forces imposed by the P substructure (¿cascade¿ approach). In doing so,\ud however, dynamic interaction between the P and S components is neglected, and the seismic-induced\ud response of the S substructure may be heavily underestimated or overestimated. In this paper, a novel\ud CQC (Complete Quadratic Combination) rule is proposed for the seismic response of linear light S\ud substructures attached to linear P substructures. The proposed technique overcomes the drawbacks of the\ud cascade approach by including the effects of dynamic interaction and different damping in the\ud substructures directly in the cross-correlation coefficients. The computational effort is reduced by using\ud the eigenproperties of the decoupled substructures and only one earthquake response spectrum for a\ud reference value of the damping ratio

Topics: Earthquake Response Spectrum, Light Linear Substructures, Non-classically Damped Structures, Non-Structural Components, CQC (Complete Quadratic Combination) Rule
Year: 2007
OAI identifier:
Provided by: Bradford Scholars

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