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Long-term vibration serviceability of a steel-plated stress ribbon footbridge

 Long-term vibration serviceability of a steel-plated stress ribbon footbridge
Author(s): , , , ,
Presented at IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014, published in , pp. 2618-2625
DOI: 10.2749/222137814814070082
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This paper describes the dynamic analysis and vibration serviceability assessment of an in-service steel-plated stress-ribbon footbridge sited in Valladolid (Spain). Because of ist slenderness and...
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Bibliographic Details

Author(s):




Medium: conference paper
Language(s): English
Conference: IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014
Published in:
Page(s): 2618-2625 Total no. of pages: 8
Page(s): 2618-2625
Total no. of pages: 8
Year: 2014
DOI: 10.2749/222137814814070082
Abstract:

This paper describes the dynamic analysis and vibration serviceability assessment of an in-service steel-plated stress-ribbon footbridge sited in Valladolid (Spain). Because of ist slenderness and singularity, this footbridge is a typical lightweight structure sensitive to dynamic excitation produced by pedestrians. A continuous vibration monitoring system which measures the acceleration and the environmental factors has been installed. The data collected have been used to identify the dynamics of the structure and assess ist vibration serviceability under in-service pedestrian traffic. Firstly, peak-acceleration-based test for single-frequency excitations are undertaken. Secondly, standards ISO 2631 and ISO 10137, suitable for general human exposure evaluation to whole-body vibrations, are used to evaluate the long-term vibration serviceability since they take into account the duration of the vibration exposure as well as the frequency content of the excitation.

Keywords:
footbridges structural monitoring vibration serviceability operational modal analysis human-induced vibrations