<abstract xmlns="http://www.w3.org/1999/xhtml"><p> 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.</p></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.

Operational Modal Analysis of the Cablestayed Footbridge

Civil and Environmental Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Operational Modal Analysis of the Cablestayed Footbridge"}

Modern architecture leads to design subtle bridge structures that are more sensitive to increased dynamic loading than the massive ones. This phenomenon can be...

Operational Modal Analysis of the Cablestayed Footbridge

Pubblicato online: 30 nov 2017

Pagine: 92 - 98

DOI: https://doi.org/10.1515/cee-2017-0012

Parole chiave
Footbridge, Dynamic characteristic, Natural frequencies, Natural shapes, Modal analysis

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Operational Modal Analysis of the Cablestayed Footbridge

Pubblicato online: 30 nov 2017

Pagine: 92 - 98

DOI: https://doi.org/10.1515/cee-2017-0012

Parole chiaveFootbridge, Dynamic characteristic, Natural frequencies, Natural shapes, Modal analysis

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Parole chiave
Footbridge, Dynamic characteristic, Natural frequencies, Natural shapes, Modal analysis