Damage and condition identi& / #64257 / cation of existing structures using non-destructive tests is a
common challenge that has been worked on for a long time. In this study, two di& / #64256 / erent methods were developed to & / #64257 / nd existing force on cables as well as determine bending characteristics (EI coe& / #64259 / cients) of beam like structures (such as bridges). Comparing forces in symmetrically placed cables or against values obtained from design drawings would indicate structural
imbalance as well as & / #64257 / nding EI coe& / #64259 / cients at a number of segments on a bridge girder might
indicate weak regions that might possibly have undergone structural damage, having weak
connections, lost composite action etc. With the help of the proposed algorithm, the sti& / #64256 / ness
parameters of bridges can be assessed and the location of any damage that is in the magnitude
which can a& / #64256 / ect displacement behavior of system can be located. The developed methods are
demonstrated using the values analytically obtained from the created models and the e& / #64256 / ectiveness of the algorithm is criticized. Furthermore, several damage scenarios on a scaled lab beam was used to test the application using real experimental data / including tests on undamaged beam (for identi& / #64257 / cation) and tests on the damaged beam. Additional experiments were
conducted on a cable stretched in the laboratory instrumented using a load cell to measure
instantaneous axial load on the cable and compare these values against the values obtained from the developed tension measurement device. The results are compared and conclusions
are derived.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12611278/index.pdf |
| Date | 01 December 2009 |
| Creators | Yucel, Mustafa Can |
| Contributors | Turer, Ahmet |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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