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Object description
The bridge was built in 2012 in the railway line Kaunas-Kybartai. It is situatade over Sesupe River in the South-West Lithuania. The bridge was built on prestressed concrete sleepers and crushed stone ballast. The bridge is 52,40 m long and 11,82 m wide and has a single span with a length of 32 m. The structural system of the bridge consists of composite steel-concrete deck rigidly connected with the massive reinforced concrete abutments. The bridge had composite steel-concrete deck rigidly connected with the massive reinforced concrete abutments. The elimination of bearings and expansion joints led to savings in construction. The abutments are supported by piles arranged in two rows resulting in rigid frame structure. The deck is composed of 150 mm thick prefabricated concrete deck panel modules. They are arranged on the six welded plate steel beams and cast-in-place concrete slab of 380 mm thick. The connections between steel girders and concrete are made using shear connectors. The bridge was designed in accordance with the Eurocode specifications (LST EN) for composite steel-concrete Bridges.
Civil engineering type
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Year of construction
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2012
Composed of materials
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Location coordinates
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54° 25' 25.49" N, 23° 18' 43.64" E
Country
:
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Object analysis
The bridge in the railway line Kaunas-Kybartai is very important for railway transport In Lithuania. Monitoring of that bridge allows to eliminate damage. It is related with a very heavy height transport moving (e.g. trains, locomotive). The case of study is to support real and practical decisions.
Object state
The bridge over Sesupe River was constructed generally for railway line. The most important demage for this bridge is excessive deformation. Field tests of the bridge were conducted using excitations induced by dropping a weight and by ambitne traffic excitation loadings. It is very important for dynamic behaviour of the bridge. It is used two tests: Impact excitation tests and Ambient traffic vibration tests. Generally combination of both experimental tests give relatively small number of vibration sensors. Vibration monitoring allows to reduction risks of the deformation.
Observed deterioration processes
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Observed damage types
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Performance indicators
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Displacement, Dynamic response (acceleration/damping/frequencies)
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Documents
This case study was contributed by Krzysztof Dul of Mostostal Warszawa S.A.. Last edited by technical staff.
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