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JOURNAL OF FACULTY OF CIVIL ENGINEERING 22, 2013.y., pp. 79-90


STRUCTURAL DIAGNOSTIC WITH THE REHABILITATION MEASURES FOR MAJSAN’S BRIDGE IN SUBOTICA
 
DOI: 10.14415/zbornikGFS22.007
UDC: 625.745.12:620.193
CC-BY-SA 4.0 license
Author : Aniko Tešanović, Josip Kovač Striko, Dragana Tabaković, Neven Nađ
 
 Summary:
 Majsan’s bridge in Subotica is on Majsan road at km 178 + 698 lines Novi Sad - Subotica, in the cellular band, at the exit from the railway station Subotica to Hungary. The current bridge was built on the foundations of reinforced bridge built around 1912 to 1913, which had to be reconstructed because of their lack of transient height required for railway electrification. Reconstruction was carried out during the 1980 to 1981. The new bridge deck is made of precast prestressed hollow core slabs girder simple beam over each of the 4 spans. Intermediate piers who accept parts of pavement slabs from two adjacent fields, consisting of rainforced final – top beam and of two rainforced canvases that rely on overhead rainforced fundamental beam as a part of the reinforced foundations of the old bridge. In the plain of the roadway, project scheduled to end over and piers incorporate typical expansion joints. When inspecting the building is found to have expansion joints installed just above the end-pillars, while over the medium pillars not in those locations in broke over the entire width, that it was "made" dilation by itself, which causes the water basing from roadway to pillars. Consequently, they are now middle pillars completely degraded, reinforcment bars in them completely corroded, fragmented is what led to the degradation of the concrete. As the track in this place very frequently and can not be terminated traffic, and on top of that passage width between columns barely meets the needs of rail traffic for which it can not be done in recovery of their coverage, the suggestion is to rehabilitation pillars done successively, one by one with the erection of temporary assembly dismantle the pillars and props in the line of the existing pillars, and repairs to be carried out using special reparation materials for concrete that will also preserve the valve and prevent its further corrosion, and instead degraded reinforcement in scope pillars applied steel plates and partially prestressed high strength bolts.
 
 Keywords:
 Corrosion, degradation, reinforcement, concrete, dilataija, rehabilitation.