Experimental investigation of Reykjavik city footbridge

Stana Zivanovic, Einar Thór Ingólfsson, Aleksandar Pavic, Gudmundur Valur Gudmundsson

Research output: Contribution to journalConference articleResearch

Abstract

This study describes experimental investigation of a 160 m long footbridge in Reykjavik. The bridge is a continuous post tensioned concrete beam spanning eight spans, the longest being 27.1 m. In plan, the structure has eye-catching spiral shape. Modal testing of the structure was conducted to identify its dynamic properties. As many as seven modes of vibration were identified in the low-frequency region up to 5 Hz. After this a series of controlled tests involving up to 38 test subjects were performed. These were designed to test vibration performance of the footbridge under various loading scenarios such as: single person either walking or jumping, group of people walking, jogging or jumping and stream of pedestrians. The severity of vibration responses of the bridge for different scenarios was then evaluated against vibration serviceability criteria defined in a guideline. It was found that the vibration performance of the bridge is quite satisfactory for wide range of loading conditions. ©2010 Society for Experimental Mechanics Inc.
Original languageEnglish
Book seriesConference Proceedings of the Society for Experimental Mechanics Series
Volume5
Pages (from-to)137-146
ISSN2191-5644
Publication statusPublished - 2011
EventIMAC XXVIII Conference and Exposition on Structural Dynamics - Jacksonville, United States
Duration: 1 Feb 20104 Feb 2010
Conference number: 28

Conference

ConferenceIMAC XXVIII Conference and Exposition on Structural Dynamics
Number28
CountryUnited States
CityJacksonville
Period01/02/201004/02/2010

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