Browsing by Author "Ryż, Karol"

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Access status: Open Access ,
Obszary aktywności dydaktycznej Katedry Budowy Mostów i Tuneli Politechniki Krakowskiej w zakresie komunikacyjnych budowli podziemnych
(2007) Flaga, Kazimierz; Ryż, Karol
In this paper a characteristic of didactic activity of the Chair of Bridge and Tunnel Construction in the Cracow University of Technology in the field of transport underground construction is given. This activity has been described in the context of the history of the development of the Chair since the very beginning of CUT, it is since the year 1945. The characteristic includes: subjects and organizational framework of student lectures and classes, diploma works, didactic excursions, conferences devoted to didactic, usage of Internet for teaching purposes, edited lecture notes and other editorials. Emphasis is put on continuous efforts toward harmonizing the didactic process with needs of investment and construction marked in Poland. Also the need for permanent education resulting from rapid development of the underground construction industry is underlined. Long term didactic work of the Chair is positively verified by professional achievements of many Chair absolvents being active in Poland as well as abroad.
Access status: Open Access ,
Wybrane zagadnienia konstrukcyjno-technologiczne budowy pierwszego w Polsce tunelu tramwajowego
(Wydawnictwa AGH, 2009) Ryż, Karol
Structural and technological characteristic of the first tram tunnel in Poland (Cracow) is presented in the paper. The tram tunnel (1538 m length) together with stations belong to the first fast tram line in Cracow. Shallow tunnel has non uniform structure. Single chamber cross section was used at south-east part of tunnel, built with various methods of construction. Milan method was applied under Lubomirskiego Street. Vertical walls were made using secant piles (big diameters) and the ceiling is monolithic (reinforced concrete deck). Diaphragm walls were used at the end part of tunnel near Mogilskie traffic-circle. Part of the tunnel under main railway station as well as under Rakowicka street was built in open excavation. Hamburg method with Berlin walls was effective for western part of tunnel (along Pawia street). »Politechnika« station was erected in open excavation with Berlin walls for vertical temporary soil support. In the case of »Dworzec Główny« station open wide excavation without soil protection was used for erection of underground part of structure. Finally, information on applied safety systems in tunnel are given.
Access status: Open Access ,
Wzmocnienie kamiennego sklepienia tunelu kolejowego za pomocą współpracującej powłoki wykonanej ze stalowych, falistych paneli cylindrycznych i betonu samozagęszczalnego
(Wydawnictwa AGH, 2005) Ryż, Karol
The railway tunnel in Kamionka Wielka, located within the Tarnów - Leluchów line, is at present over 100 years old. It is an arch type stone structure. At the tunnel inlet at the Tarnów side an unacceptable deformation as well as a cracking of the stone lining was noted at the range of several meters. The risk of the collapse of the structure and soil mass was apparent. Moreover separation process between portal and the arch stone lining is going on and there is a possibility that loose stone blocks will fall out from the structure. The described technology of the structure rehabilitation contains both immediate actions and final measures undertaken during further steps of the repair procedure. Immediate strengthening and stabilization of the structure at the zone where structural damage had occurred was performed by inserting of steel arch support of V-section connected to the stone by means of in-glued anchors. Final strengthening at the zone of 30 m and at the tunnel portal consists of a steel shell at the arch zone and the reinforced concrete abutments at the walls. The steel shell is made from bolted corrugated panels. Connection of the shell with the existing tunnel lining is assured by infilling the interface gap with a self-compacting concrete. Presented repair procedure was possible due to the usage of modern measures like bolted corrugated steel panels and self-compacting concrete. At each stage of the rehabilitation procedure, railway traffic can be continued which may be recognized as an important advantage of the presented technology.