In situ monitoring on prestress losses in the reinforced structure with fiber-optic sensors
作者： Fu-Zhen Xuan , Hongwei Tang , Shan-Tung Tu
DOI: 10.1016/J.MEASUREMENT.2008.04.011
关键词: Fiber optic sensor 、 Reinforced concrete 、 Deformation (meteorology) 、 Creep 、 Structural engineering 、 Materials science
摘要: Abstract Measurement and evaluation of the prestress losses in reinforced structures are essential issues for structural design healthy assessment. In present work, an optical-fiber-sensor-based monitoring technique was introduced to evaluate loss quantitatively steel-strand structures. A total 14 fiber-optic sensors were employed fixed on through pre-designed windows a sewage treating tank. The output signals collected analyzed via secondary meters computer. Results indicate that system is feasible on-line concrete practice. value short-term apparently related arrangement steel strand concrete. For measured tank, due deformation anchor greater than relaxation steel–strand during ten days after tensioning. whole relaxation, creep at point only 1.4% since
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