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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 9/10
PROCEEDINGS OF THE FOURTH INTERNATIONAL CONFERENCE ON CIVIL AND STRUCTURAL ENGINEERING COMPUTING
Edited by: B.H.V. Topping
Paper XX.1

A Novel Dynamic Deflection Measurement System for Large Structures

J.G. Leitch*, A. Thompson+ and T.D. Sloan+,

*Brown and Root Vickers Ltd., London
+Civil Engineering Department, The Queen's University of Belfast, Belfast, Ireland

Full Bibliographic Reference for this paper
J.G. Leitch, A. Thompson, T.D. Sloan, "A Novel Dynamic Deflection Measurement System for Large Structures", in B.H.V. Topping, (Editor), "Proceedings of the Fourth International Conference on Civil and Structural Engineering Computing", Civil-Comp Press, Edinburgh, UK, pp 301-306, 1989. doi:10.4203/ccp.9.20.1
Abstract
A system to measure the static and dynamic deflections of a major bridge is described. The system uses laser beams to provide a frame of reference over distances of 120m and measurements are made by tracking the movements of the beam using a computer controlled solid state camera. The system will operate unattended over long periods. Details of the hardware and software, together with typical results are presented.

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