Przedstawiono mało znany, historyczny most z betonu sprężonego, zaprojektowany w latach 50. ubiegłego wieku przez Stanisława Kusia i Aleksandra Włodarza w dawnym Biurze Studiów i Projektów Typowych Budownictwa Przemysłowego w Warszawie. Jest to jeden z ciekawszych, historycznych mostów z betonu sprężonego wybudowanych w Warszawie.
EN
The paper presents a little-known historical bridge, constructed of prestressed concrete, which was designed in the 1950's by Stanistaw Kuś and Aleksander Włodarz in the no longer existing Office of Studies and Standard Industrial Civil Engineering Designs in Warsaw (Biuro Studiow i Projektow Typowych Budownictwa Przemystowego). It is one of more interesting, historical prestressed concrete bridges ever built in Warsaw.
Wiadukt "Pancera", usytuowany w bezpośrednim sąsiedztwie Zamku Królewskiego, został zbudowany razem z Trasą W-Z w 1949 r. Przedstawiono historię budowy oraz przyczyny złego stanu technicznego sprzed remontu. Omówiono wykonane badania i pomiary elementów konstrukcji wraz ze szczegółowym zakresem i technologią prac remontowych.
EN
"Pancera" flyover, located in the historic part of Warsaw, in the immediate vicinity of the Royal Castle, was constructed together with Trasa W-Z route in 1949. Repair works of the load-bearing structure, the supports and the immediate surroundings of the flyover are being performed in the course of repairs and expansion of the grid of tram routes, realized by Warsaw Tram Industry in 2009. The paper presents, in brief, the description of the flyovers structure as well as the historical and technical aspects which have led to its poor technical condition. The article describes scope of the examination and measurement work preceding the design work. It also presents the scope of the completed repair works as well as some circumstances associated with the work being performed.
Przedstawiono stan zaawansowania budowy inżynierskich obiektów mostowych Trasy Siekierkowskiej zlokalizowanych w obrębie węzła Marsa (odcinek IIB). Podano krótką charakterystykę budowanych obiektów. Szczegółowo opisano budowę podpór pośrednich i konstrukcji nośnej estakad głównych. Zasygnalizowano najważniejsze problemy wynikające z budowy obiektów w sąsiedztwie i nad trasami o intensywnym ruchu w centrum miasta.
EN
The state aproach engineering bridge objects of Siekierki Route - Mars Junction - part IIB is presented. The short characteristic of building objects built at Mars Junction is given. The construction of the main intermediate pillars and capital structures of flyovers with intensive trafic mobility are presented in detail.
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This paper presents an example of modeling and analysis of an extradosed bridge structure which has been performed with the use of SOFiSTiK software. The input data for the development of models and execution of calculations was based on fragments of design documentation of a bridge over Vistula river in Kwidzyn, prepared by Transprojekt Gdańsk and made available to the authors in 2009. The main load bearing structure consists of a 6-span post-tensioned concrete girder, with cross-section of a 3.5m high 3-chamber box, additionally tensed with cables of extradosed type. The objective of the study was to develop computational models of the superstructure and their structural static analysis during two main phases, namely incremental launching and finally during operation of the bridge, when the target static scheme was achieved. The paper presents an analysis of the structure during incremental launching. The process of incremental launching has been modeled with the use of CSM module (Construction Stage Manager). The CSM is a part of the Sofistik environment which has been designed for modeling construction cycles and scenarios of structural systems which are to be built in stages. The methodology of development of numerical models has been described in detail, with regard to the capabilities of the used software. The paper presents the way that the geometry of the bridge has been generated, the method of simulating the incremental launching as well as the types of the loads which have been applied to the structure. The studies have been conducted on two separate numerical models. The numerical models consist of bar elements situated in a two-dimensional and three-dimensional spaces. The model created for the purpose of the operating stage analysis has been presented with regard to generation of the structure, division into finite elements, modeling of inner and outer tension cables, applied loads and the criteria assumed for analysis of the structure. Moreover, the authors present an alternative post-tensioning system, as compared to the one assumed in the building design, which ensures limited compression of the structure. Finally, the paper contains the conclusions and observations arising from the performed analysis.
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"Pancera" flyover, located in the historic part of Warsaw, in the immediate vicinity of the Royal Castle, was constructed together with Trasa W-Z route in 1949. Repair works of the load-bearing structure, the supports and the immediate surroundings of the flyover are being performed in the course of repairs and expansion of the grid of tram routes, realized by Tramwaje Warszawskie in 2009. The paper presents, in brief, the description of the flyovers structure as well as the historical and technical aspects which have led to its poor technical condition. The article describes scope of the examination and measurement work preceding the design work. It also presents the scope of the completed repair works as well as some circumstances associated with the work being performed.
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System Gospodarki Mostowej, prócz gromadzenia i analizowania danych stanie się istotnym narzędziem w procesie rozdziału środków finansowych i wyboru strategii utrzymania.
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