Operational Modal Analysis of the Cablestayed Footbridge-Reference-Cited by-同舟云学术

Operational Modal Analysis of the Cablestayed Footbridge

Published:2017-11-30 Issue:2 Volume:13 Page:92-98
ISSN:2199-6512
Container-title:Civil and Environmental Engineering
language:en
Short-container-title:

Author:

Kortiš Ján¹,Daniel Ľuboš¹,Farbák Matúš²,Maliar Lukáš¹,Škarupa Milan¹

Affiliation:

1. Department of Structural Mechanics and Applied Mathematics, Faculty of Civil Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina , Slovakia

2. Department of Structures and Bridges, Faculty of Civil Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina , Slovakia

Abstract

Abstract Modern architecture leads to design subtle bridge structures that are more sensitive to increased dynamic loading than the massive ones. This phenomenon can be especially observed on lightweight steel structures such as suspended footbridges. As a result, it is necessary to know precisely its dynamic characteristics, such as natural frequencies, natural shapes and damping of construction. This information can be used for further analysis such as damage detection, system identification, health monitoring, etc. or also for the design of new types of construction. For this purpose, classical modal analysis using trigger load or harmonic vibration exciter in combination with acceleration sensors is used in practice. However, there are many situations where it is not possible to stop the traffic or operation of the bridge. The article presents an experimental measurement of the dynamic parameters of the structure at the operating load using the operational modal analysis.

Publisher

Walter de Gruyter GmbH

Subject

Civil and Structural Engineering,Environmental Engineering

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