Generation of floor response spectra of structures under seismic excitations at multiple supports

Wang, Rui; Xie, Wei‐Chau; Pandey, Mahesh D.

doi:10.1016/j.nucengdes.2021.111527

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…Gupta (1996), and Gupta and Gupta (1995) proposed an analytical method for transforming the eigenvalues and eigenvectors of multi-degree-of-freedom (MDOF) subsystems to obtain the modal characteristics of the coupled system [3,4]. Jiang et al (2015) and Li et al (2015), Wang et al (2022) developed and validated a direct-spectra-to-spectra method to compute the ISRS directly from the response spectrum of the ground motion based on the modal combination of the coupled system [9][10][11]. These methods have the disadvantage of being limited to modal analysis.…”

Section: Introductionmentioning

confidence: 99%

In-Structure Response Spectra of an Auxiliary Building in a Nuclear Power Plant Considering Equipment–Structure Interaction

Ahn

Park

2022

Applied Sciences

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A two-degree-of-freedom (two-DOF) equation of motion was derived in the frequency domain using a substructuring technique for efficiently calculating the in-structure response spectrum (ISRS) considering equipment–structure interaction. The model of the primary structure was condensed into a mechanical impedance function and combined with the equipment represented by a single-degree-of-freedom oscillator in the frequency domain. This condensed two-DOF system is applied to the efficient calculation of the ISRS considering the equipment–structure interaction without repeated analysis of the coupled model with full DOFs. This coupled analysis procedure was applied to a finite element model of an auxiliary building in a nuclear power plant to validate both the accuracy and impact on the equipment response. Finally, the adequacy of three representative decoupling criteria on the necessity of coupled analysis was investigated by applying those criteria to the auxiliary building example.

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