Premium
Response spectrum analysis for floor acceleration
Author(s) -
Pozzi Matteo,
Der Kiureghian Armen
Publication year - 2015
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.2583
Subject(s) - acceleration , response spectrum , cantilever , structural engineering , frequency domain , quadratic equation , response analysis , spectral acceleration , base (topology) , domain (mathematical analysis) , spectrum (functional analysis) , shear wall , time domain , beam (structure) , engineering , mathematics , computer science , mathematical analysis , peak ground acceleration , physics , geometry , ground motion , classical mechanics , quantum mechanics , computer vision
Summary The peak floor acceleration (PFA) is a critical parameter influencing the performance of non‐structural elements in buildings. This paper develops a response spectrum analysis method based on the complete quadratic combination (CQC) rule to estimate the PFA. The method accounts for the rigid contribution of truncated higher modes and the cross‐correlations between all pairs of modes. The approximation is introduced in the time domain and then formulated in the frequency domain by CQC. Application of the method to a continuous cantilever beam idealizing a building with shear walls is presented and compared with alternative formulations. The proposed method is able to provide a consistent estimation of the PFA along the entire structure, not only where the PFA is principally influenced by the first few flexible modes but also where the PFA is mainly related to the rigid response of the structure, for example, near its base. Copyright © 2015 John Wiley & Sons, Ltd.