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Proceedings Paper

Stress monitoring and re-adjustment in concrete structures
Author(s): Charles Abdunur
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Paper Abstract

To monitor and control the stress profile in concrete bridges, a two-stage system is presented. The stress is first measured then monitored by the time-dependent pressure of an embedded flat jack, keeping the local strain variations constantly equal to those occurring at a sufficiently close but undisturbed point. When the flat jack clearly indicates a stress outside the allowable limits, external tendons then automatically re-adjust the pre-stressing force. This actively reactive system responds to significant irreversible stress variations but disregards minor fluctuations.

Paper Details

Date Published: 1 May 1992
PDF: 4 pages
Proc. SPIE 1777, First European Conference on Smart Structures and Materials, 17771I (1 May 1992); doi: 10.1117/12.2298077
Show Author Affiliations
Charles Abdunur, Lab. Central des Ponts et Chaussees (France)

Published in SPIE Proceedings Vol. 1777:
First European Conference on Smart Structures and Materials
Brian Culshaw; Peter T. Gardiner; Alaster McDonach, Editor(s)

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