Modal analysis of a partially constructed cable-stayed bridge

J. H.G. Macdonald*, N. S. Dobinson, H. J. Macnamara, C. A. Taylor

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

3 Citations (Scopus)

Abstract

The dynamic behaviour of the Second Severn Crossing cable-stayed bridge was monitored throughout the construction period. This paper presents the results of a modal survey, conducted in ambient conditions, of a completed cantilever before closure of the main span. A finite element model of the structure is described, and the results of the measured and modelled modal behaviour are compared. Good agreement was found between the site-measured modes and those predicted by the finite element model for vibrations in the vertical/longitudinal plane, however there were greater discrepancies for modes involving torsion. Work is continuing to improve the accuracy of the model and to investigate more detailed aspects of the dynamic behaviour of such bridges.

Translated title of the contributionModal analysis of a partially constructed cable-stayed bridge
Original languageEnglish
Title of host publicationProceedings of the International Modal Analysis Conference - IMAC
Pages1367-1373
Number of pages7
Volume2
Publication statusPublished - 1 Jan 1998
EventProceedings of the 1998 16th International Modal Analysis Conference, IMAC. Part 1 (of 2) - Santa Barbara, CA, USA
Duration: 2 Feb 19985 Feb 1998

Publication series

NameProceedings of the International Modal Analysis Conference - IMAC
ISSN (Print)1046-6770

Conference

ConferenceProceedings of the 1998 16th International Modal Analysis Conference, IMAC. Part 1 (of 2)
CitySanta Barbara, CA, USA
Period2/02/985/02/98

Bibliographical note

Conference Proceedings/Title of Journal: 16th International Modal Analysis Conference

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