Stress monitoring and re-adjustment in concrete structures

Charles Abdunur

doi:10.1117/12.2298077

1 May 1992 Stress monitoring and re-adjustment in concrete structures

Charles Abdunur

Proceedings Volume 1777, First European Conference on Smart Structures and Materials; 17771I (1992) https://doi.org/10.1117/12.2298077
Event: First European Conference on Smart Structures and Materials, 1992, Glasgow, United Kingdom

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.

Citation Download Citation

Charles Abdunur "Stress monitoring and re-adjustment in concrete structures", Proc. SPIE 1777, First European Conference on Smart Structures and Materials, 17771I (1 May 1992); https://doi.org/10.1117/12.2298077

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