Modal analysis of a partially constructed cable-stayed bridge

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

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 proceeding › Conference 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 contribution	Modal analysis of a partially constructed cable-stayed bridge
Original language	English
Title of host publication	Proceedings of the International Modal Analysis Conference - IMAC
Pages	1367-1373
Number of pages	7
Volume	2
Publication status	Published - 1 Jan 1998
Event	Proceedings of the 1998 16th International Modal Analysis Conference, IMAC. Part 1 (of 2) - Santa Barbara, CA, USA Duration: 2 Feb 1998 → 5 Feb 1998

Publication series

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

Conference

Conference	Proceedings of the 1998 16th International Modal Analysis Conference, IMAC. Part 1 (of 2)
City	Santa Barbara, CA, USA
Period	2/02/98 → 5/02/98

Bibliographical note

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

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title = "Modal analysis of a partially constructed cable-stayed bridge",

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.",

author = "Macdonald, {J. H.G.} and Dobinson, {N. S.} and Macnamara, {H. J.} and Taylor, {C. A.}",

note = "Conference Proceedings/Title of Journal: 16th International Modal Analysis Conference; Proceedings of the 1998 16th International Modal Analysis Conference, IMAC. Part 1 (of 2) ; Conference date: 02-02-1998 Through 05-02-1998",

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Macdonald, JHG, Dobinson, NS, Macnamara, HJ & Taylor, CA 1998, Modal analysis of a partially constructed cable-stayed bridge. in Proceedings of the International Modal Analysis Conference - IMAC. vol. 2, Proceedings of the International Modal Analysis Conference - IMAC, pp. 1367-1373, Proceedings of the 1998 16th International Modal Analysis Conference, IMAC. Part 1 (of 2), Santa Barbara, CA, USA, 2/02/98.

Modal analysis of a partially constructed cable-stayed bridge. / Macdonald, J. H.G.; Dobinson, N. S.; Macnamara, H. J.; Taylor, C. A.

Proceedings of the International Modal Analysis Conference - IMAC. Vol. 2 1998. p. 1367-1373 (Proceedings of the International Modal Analysis Conference - IMAC).

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

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