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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
271

Most přes Lochkovské údolí / Bridge across the Lochkov Valley

Zvolánek, Lukáš January 2013 (has links)
The theme of the Master’s thesis is detailed design of superstructure for selected option of the bridge. The bridge carries highway across Lochkov valley. The superstructure, 6 spans, is made of one cell continuous box beam with large overhangs supported by prefabricated struts. The continuous beam is in plan curvature. As the first, side spans 1, 5, 6 will be casting on fixed scaffolding. Spans 2 and 4 will be casting using cantilever method, gradually hanging superstructure up. For the casting the main span will also be using cantilever method, gradually removing temporary hangers of adjacent spans. The structure was analysed according to limit states. The thesis also includes a time dependent analysis of the structure and solution of influence construction on its design.
272

Dálniční most přes silnici II/464 / Highway bridge ower the II/464 road

Zalubel, Tomáš January 2014 (has links)
The master´s thesis is about detailed design of highway bridge from prestressed concrete between the cities Brno and Ostrava. The construction is continuous and consists from three fields. Internal forces was taken from software SCIA Engineer. The static assessment was realized according to limit states. Counstruction is evaluated according to the current standards.
273

Most nad místní komunikací a potokem / Bridge over a local road and a brook

Tichavská, Andrea January 2015 (has links)
The purpose of the master thesis is the design of the concrete highway bridge by European standards. The highway is situated on two independent prestressed load-bearing structures with cross-section area of constant dimensions over its length. The bridge deck is built on a falsework considering its proportions and obstacles under the bridge. The thesis contains the design and the assessment of the load-bearing structure in longitudinal and transverse direction including the calculation of cross beams and an anchorage zone.
274

Most na rampě / Bridge on a ramp

Páteček, Tomáš January 2015 (has links)
The object of this diploma thesis is the design and review of a bridge on a ramp. The bridge is part of a junction between the expressway R35 and the highway D1. Three case studies were made. The bridge construction is solved as continuous beam with six spans. The resulting design was made of prestressed concrete according to valid standards. The gradual construction was taken into consideration.
275

Most přes místní komunikaci a potok / Bridge over a local road and brook

Večeřa, Jan January 2016 (has links)
The Diploma thesis deals with the design of the bridge construction that conveys the road I/11 across the Bystry brook and the local road between Nebory and Oldřichovice. The construction is designed in four options, one of which was selected is the variation of the prestressed onebeam construction of four fields and the lenght of bridging 106,6 m. Calculation of the effects of the load is carried by a computer program Scia Engineer. Assessing the design is done in accordance with applicable European standards EN 1992-1-1. It is also elaborated well arranged drawing documentation, construction process and visualization of the bridge.
276

Most na dálnici / Bridge on a highway

Juřicová, Markéta January 2016 (has links)
Diploma thesis deals with design of oblique highway bridge over the valley brook Pustějovského. Two-joist girder of three spans is selected from the three proposed variants. Static calculation is drafted according to European norem- Eurocode. The structure is designed and assessed for limit states temporary and permanent load conditions. And a further is elaborated detailed and well-arranged drawing documentation, visualization of bridge and construction procedure.
277

Preliminary design and multi-criteria analysis of solutions for widening an existing concrete bridge : Case of the Bridge of Chaillot in Vierzon (France)

Fline, Pierre January 2011 (has links)
Europe experienced the destruction of numerous infrastructures during World War II, followed by a reflation and a strong economic growth during the next two decades allowing a more perennial and durable situation. A classical bridge lasting in general around 80 years, one should observe that these constructions built after the war will have to be either replaced either seriously strengthened in a few years. Besides, since the needs also vary over time, transportation infrastructures built during those years might not be adapted to the actual needs anymore – some bridges might thus have to be widened. A case study has been chosen in order to simulate under which conditions the widening of such a bridge can be performed. This road bridge, located in Vierzon in France, is rather simple since it is made of simply supported prestressed concrete beams and of reinforced concrete piers. It has been chosen in particular for its reduced size – three spans of 30 m each and two road lanes – that corresponded well to this project. Based on some data provided when the bridge was initially built and on a visual inspection, this project suggests six technical solutions to double the actual amount of lanes. An evaluation of the performance of the solutions according to three criteria – durations of works, cost of the works, and environmental impact – is made in order to give recommendations regarding the optimal solution. The results show that in spite of being installed quickly, adding steel beams is more expensive and has a greater impact on the environment than adding prestressed concrete beams. Regarding the modification of piers, the solution suggesting widening the existing piers is preferable than adding new extra piers according to all the criteria. Consequently, among all the solutions analysed, the optimal one is also the simplest one. Finally, the limits of the study and some suggestions for improvements are indicated.
278

Verstärkung von Stahl- und Spannbetonbrücken mit Carbonbeton

Steinbock, Oliver 20 April 2022 (has links)
Um die Anwendbarkeit von Carbonbeton als Verstärkungsmaßnahme bewerten zu können, wurden zunächst Aspekte zur Materialbeschaffenheit auf Grundlage laufender Forschungsvorhaben zusammengetragen und vor dem Hintergrund der Anwendung im Brückenbau gezielt durch eigene Versuchsserien ergänzt. Der Schwerpunkt der Arbeit lag jedoch bei der Untersuchung des Tragverhaltens von verstärkten Stahl- und Spannbetontragwerken. Während die Verbundunterschiede zwischen Bewehrungsmaterial im Altbetonbauteil und der nachträglich angebrachten Verstärkungsschicht im Bruchzustand von untergeordneter Bedeutung sind, bestimmen diese im Gebrauchszustand das Tragverhalten maßgeblich. Basierend auf Bauteilversuchen an carbonbetonverstärkten Stahl- und Spannbetonplattenstreifen gelang es sowohl einen Bemessungsansatz unter Gebrauchslastniveau als auch für den Grenzzustand der Tragfähigkeit abzuleiten. Auch die weit verbreitete Problematik in Deutschland zur Verstärkung von Tragwerken mit spannungsrisskorrosionsgefährdetem Spannstahl wurde behandelt. An Brückenträgern aus einem Brückenrückbau ergab sich die Möglichkeit experimentelle Untersuchungen durchzuführen und die Wirksamkeit einer Carbonbetonverstärkung zu validieren. Die Träger wurden zunächst gezielt geschädigt, anschließend mit Carbonbeton verstärkt und das Tragverhalten in Hinblick auf die Kriterien Rissbildung unter Gebrauchslasten (Ankündigungsverhalten) sowie die erzielbare Restsicherheit (Tragsicherheit) bewertet. Die Ergebnisse und Berechnungsansätze wurden für die praktische Anwendung in einem Bemessungsbeispiel zusammengetragen. Mit der vorliegenden Arbeit wurden somit die Grundlagen geschaffen Verstärkungsmaßnahmen mit Carbonbeton im Brückenbau bemessen zu können.
279

Spojitý komorový most / Continuous box girder bridge

Hajnoš, Mário January 2022 (has links)
The topic of this thesis is detailed design of supporting structure of continous box girder bridge across a deep valley called Lazný creek. The bridge have to pass the second class road with category S 9,5. The design is processed by two options. The chosen option is designed as a girder with five spans 44,8 m + 55 m + 55 m + 55 m +44,8 m. Total length of bridge is 268,57 m, the main girder is gradually cast into the formwork suspended on a special ceiling scaffolding. The axis of the bridge is in a plan straight with the constant transversal slope 2,5 %. The thesis contains six models in software SCIA ENGINEER. Part of the work is situated on time depended analysis with construction phases. Assesment of ultimate limit states and serviceability limit states were done by hand according to the valid standards and regulations. Structural analysis, drawing documentation and vizualization are parts of this work.
280

Hasičská stanice / Fire station

Horváthová, Radka January 2022 (has links)
The topic of the diploma thesis is the elaboration of project documentation for the construction of a fire station with almost zero energy consumption. The building will serve as a fire station type P4 with the scope of the JPO I unit - a unit of the fire department with a territorial scope, usually within 20 minutes drive from the place of deployment. The designed building is a detached object with two above-ground and one underground floor. The building is designed as a reinforced concrete skeleton. It consists of two operating units. The administrative and operational part has three floors. In this part, the main entrance to the building is on the 1st floor, oriented on the south side. The technical rooms of the fire department are located on the first floor and are functionally connected to the administrative part. Exit garages, a car wash and a dryer are also attached to it. Prior to the elaboration of the project, a visit to the regional fire station in Trnava and a consultation with the director of this station took place regarding the needs and requirements of the fire department.

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