Studies for controlling human-induced vibration of the Pedro e Ines footbridge, Portugal. Part 1: Assessment of dynamic behaviour

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Elsa Caetano (Author) FEUP; Álvaro Cunha (Author) FEUP; Filipe Magalhães (Author) FEUP; Carlos Moutinho (Author) FEUP

Journal

Title: Engineering Structures

Vol. 32 No. 4

Pages: 1069-1081

ISSN: 0141-0296

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 67 Citations

ISI Web of Science

Scopus - 107 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Structural engineering

Other information

Authenticus ID: P-003-7R2

DOI: 10.1016/j.engstruct.2009.12.034

Abstract (EN): The construction in Portugal of a relatively long and slender footbridge prone to vertical and lateral vibrations induced by the action of pedestrians motivated the full assessment of the corresponding dynamic behaviour with the purpose of installing a control system. The current paper describes the studies undertaken at a design stage and the results of a thorough experimental assessment of the constructed bridge properties This experimental test allowed in particular the identification of modal parameters and the observation of the lateral "lock-in" effect under the crossing of the footbridge by pedestrian streams prior to installation of control devices The number of pedestrians to trigger lock-in was found to verify the formula developed within the Millennium bridge studies. Furthermore, the full characterisation of the bridge behaviour was of utmost importance in the design of a control system based on tuned mass dampers that is discussed in a companion paper.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13