Building structure parameter identification using the frequency domain decomposition (FDD) method

Abstract

In recent years, Operational Modal Analysis, also known as Output-Only Analysis, has been used for estimation of modal parameters of the structures such as the buildings, bridges, towers, and mechanical structures. The advantage of this method is that expensive excitation equipment can then be replaced by ambient vibration sources such as wind, wave, and traffic used as input of unknown magnitude, and then modeled as blank interference in the modal identification algorithms. This paper presents an overview of the non-parameter technique based Frequency Domain Decomposition (FDD), dynamic model of n-storeybuilding and method of modal parameters identification using FDD. In addition, using statistical probability to evaluate the results that obtained the stiffness and inter-storey dift of 2-storey building.