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Onysyk J.,Wroclaw University of Technology | Biliszczuk J.,Wroclaw University of Technology | Prabucki P.,Research and Design Office Mosty Wroclaw | Sadowski K.,Wroclaw University of Technology | Toczkiewicz R.,Research and Design Office Mosty Wroclaw
Structural Concrete | Year: 2014

The Centennial Hall, a reinforced concrete structure with an auditorium for 10000 people, was opened in Wrocław, Poland (then Breslau, Germany), in 1913 after two years of construction. Its dome, covering the whole building, has a diameter of 65.0 m and in the year it was completed was the largest reinforced concrete dome in the world. This broke the previous record, held by the dome of the Pantheon in Rome (43.3 m), which had lasted for 1787 years. This paper describes the structure of the building, its condition after 100 years of use and the renovation works carried out in 2009-2011. An important part of the renovation was strengthening the lower (tension) ring of the ribbed dome by way of external prestressing. Details concerning the assessment of the technical condition of the hall, numerical calculations and the proposed system of strengthening are presented. In 2006 the monumental Centennial Hall was listed as a UNESCO World Heritage Site for its pioneering reinforced concrete structure, designed in the style of modernism. Copyright © 2014 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.

Biliszczuk J.,Wroclaw University | Onysyk J.,Wroclaw University | Prabucki P.,Research and Design Office Mosty Wroclaw | Toczkiewicz R.,Research and Design Office Mosty Wroclaw
Multi-Span Large Bridges - Proceedings of the International Conference on Multi-Span Large Bridges, 2015 | Year: 2015

The road and railway infrastructure in Poland has been intensively developed and modernized over the last years. During the last decade more than 2500 new bridges were built along the main roads and motorways. Among them several large multi-span bridges with a length of more than 500m were constructed. This paper presents the following most interesting and complex structures: – Multi-span post-tensioned concrete flyovers along the A8 motorway; – The North Bridge in Warsaw – one of the largest steel beam bridges in Poland; – The new Warszawski Bridge in Wrocław – road-tram urban bridge, a six-span continuous steel beam structure with a Langer arch over the water channel; – The bridge over the Vistula River in Puławy – continuous multi-span steel-concrete beam, the main span is a steel tied through arch with a length of 212 m; – The Rędziń Bridge over the Odra River in Wrocław – concrete structure consisting of two multi-span access flyovers and the main cable-stayed bridge with two spans of 256 m suspended to a single pylon; – The Solidarity Bridge over the Vistula River in Płock – steel cable-stayed structure with a span of 375 m (the longest span in Poland) suspended to two I-shaped pylons fixed in deck. The paper also describes construction technology of the aforementioned bridges. © 2015, Taylor & Francis Group, London.

Biliszczuk J.,Wroclaw University of Technology | Biliszczuk J.,Research and Design Office Mosty Wroclaw | Barcik W.,Research and Design Office Mosty Wroclaw | Onysyk J.,Wroclaw University of Technology | And 4 more authors.
Structural Engineering International: Journal of the International Association for Bridge and Structural Engineering (IABSE) | Year: 2014

This paper describes the largest structure along the motorway ring road of Wrocław (Poland) - a cable-stayed bridge over the Odra River near Rȩdzin barrage. The river flows there in its main bed, while inland navigation uses additional water channels. Pylon of the new bridge is situated on an island located between the river and the channels. The structure is 1742 m long and consists of two multi-span flyovers and a 612-m-long cable-stayed bridge with separate decks suspended to one 122-m-high pylon. The superstructure consists of two prestressed concrete box girders, one for each carriageway of the highway. The decks of the main bridge are suspended to a reinforced concrete pylon by 80 pairs of stay cables. The bridge with a deck area of approximately 65 000 m2 was constructed within 36 months.

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