1 May 1992 Stress monitoring and re-adjustment in concrete structures
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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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Charles Abdunur, 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); doi: 10.1117/12.2298077; https://doi.org/10.1117/12.2298077

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