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Remont sklepionego mostu kolejowego nad rzeką Bóbr i obwodnicą Bolesławca

100%

Budka E. , Rabiega J.

tom Nr 8

35-46

This paper describes a history of how bridge over Bóbr river in Bolesławiec was built, damages sustained during war and all the maintenance provided up to now. Vaults of bridge are maid of sandstone. New railway surface was laid on the trough for ballast that was redesigned and built anew. The Paper presents renovation and maintenance works done on the bridge. Reconstruction of the bridge was a part of E30 Węgliniec - Legnica railway line modernization proceeded according to international AGC/AGTC contract requirements.

Przebudowa i wzmocnienie zabytkowego mostu XV-lecia (fortecznego) nad Nysą Kłodzką w Kłodzku

80%

Budka E. , Kożuch M. , Lorenc W. , Rabiega J.

tom Nr 1 (1)

46-56

Most XV-lecia (Forteczny) w Kłodzku powstał pod koniec XVIII w. Prace modernizacyjne na tak starym obiekcie zawsze są nie lada wyzwaniem. Przedstawiamy ciekawe studium przypadku.

In the paper authors presented refur- bishment and strenghtening works carried out on historical Fortress Bridge over Nysa Kłodzka in Kłodzko. This bridge is an importand point between roads connecting local industrial activity regions. Expertise and evaluation o:: bridge technical co ndition shown that the bridge capacity does not comply with required one. Design and execution works were carried out. Technical parameters of the bridge and chosen technical problems and theire solution were shown in the paper. Big attention was paid to assumptions for static calculation, so importand for strengthening of composite bridge, for which technology of the unknown realization has influence (promped or non-promped structure while concreting). Way of girders strengthening by means of external pre- stressing was shown and connected to this necessity of taking extra shearing forces between steel and concrete. This was originally planned to deal with headed studs, out the technology was changed to screwed boles as this was much cheaper and easier to erect. Finally trial load of the bridge and its results was described. Elastic deflections measured during tests did not increase these calculated earlier in the loading program. The bridge was allowed for public exploitation in autumn 2010.

Zastosowanie prefabrykatów w przebudowie mostu kolejowego przez rzekę Bóbr w Bolesławcu

61%

Budka E. , Gruba S. , Stempniewicz A. , Kania J. , Lorenc W. , Rabiega J.

tom R. 67, nr 7-8

382-386

Prefabrykaty zastosowano w czasie remontu najdłuższego kamiennego mostu kolejowego w Polsce, mającego długość 489,0 m. Wykorzystano 59 różnych typów prefabrykatów o indywidualnych gabarytach. Wszystkie elementy wykonano w niemieckich wytwórniach w Plauen, a wbudowano w Polsce. Dlatego zarówno zbrojenie, beton, jak i same prefabrykaty musiały spełniać wymagania przepisów niemieckich i polskich.

Authors presented application of precast concrete elements during refurbishment of bridge in km 37.221 of railway no. 282 over Bóbr River and bypass of Bolesławiec. Construction works were realized on the longest railway stone bridge in Poland, which length is 489,0 m. There was a necessity to use 59 different type of precast elements, with various dimensions, from 1 to 192 pcs. of each type. Overall 518 pcs. of precast elements were realized and embodied. All elements, including reinforcement, were realized in German plants in Plauen, and used in Poland, so rebar, concrete as well as precast elements itself have to fulfilI both German and Polish requirements.