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The Structure of the Atypical Family House in Vrchlabí
Vondráček, Vít ; Hron, Lukáš (referee) ; Šmak, Milan (advisor)
The subject of master’s thesis is design and assessment of steel load-bearing construction of atypical family house in Vrchlabí. Structure is designed as multi-storey steel structure, cooperating with stiff concrete core. The design was considered in four different options which combines possibility of using steel, steel and timber with different way of stiffness for whole structure. There is also composite steel-concrete alternative floor trimmer for selected option. Design and assessment was conducted in accordance with the applicable standards and by using software Scia Engineer.
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Footbridge in Kyjov
Maleňák, Jan ; Štrba, Michal (referee) ; Barnat, Jan (advisor)
The content of diploma thesis is design of the construction of steel footbridge for pedestrians and cyclists. The footbridge is across the railway in Kyjov. The design will be processed in two options of structure. The selected option will be developed in greater detail. The span of footbridge is 35 m and the width is 3 m. The contruction is made by two arched beams which are connected to the bridge deck by suspenders. The stability of the construction is provided by longitudinal bracing under the bridge deck and the bracing between the arched beams. The assessment of the structure was made according to valid standards.
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Laser welding of plastics
Nováková, Eliška ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
The bachelor presents a brief characteristics of thermoplastics welding methods followed by a more detailed description of laser welding of thermoplastics, i.e. laser description, division and types. Then, conditions and parameters of welding are defined. The experimental part is focused namely on visual welding tests on a test sample. The sample consists of two types of material – pure polymethyl methacrylate and black polycarbonate – which are used in car headlamp production. For welding, a diode laser designed for thermoplastics welding was used. The main target of inspection were flaws that were visible on macroscopically enlarged images. The tested welds mostly showed porosity and air bubbles. Finally, an evaluation of the experiment is conducted.
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Welding of the lift cage framework
Měřičková, Petra ; Daněk, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
Stress relieving in the welded joints occurs when loaded of the platform lift. Critical welds of profile from steel S235JRH and of stiffener from steel S355J0 are examined in terms of flexibility, strength and safety using strength analysis method. Under different welding conditions and parameters are performed the testing welds by method MAG. Macroscopic and microscopic inspection are conducted as well as tension test. Weld created in active gas 82 %Ar + 18 %CO2, by dip transfer with low values of welding current 96 A and voltage 20,2 V became as the top evaluated sample. This weld is recommended to use in practice.
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The Roof Structure of a Multipurpose Sport Building
Michálek, Vojtěch ; Šmak, Milan (referee) ; Buchta, Stanislav (advisor)
The topic of the thesis is a project of roof of a multifunctional sport object with a ground-plan covering area 35x48m, and maximum height of 16m. This construction is projected for Brno and its surroundings. The project of roofing is evolved in two different variants. First one is formed by double-jointed arched latticed truss. Supporting components such as purlins, lateral and longitudal bracings, frontal column and anchorage are designed and assessed in static calculation. At the end of the thesis, comparison of both variants is elaborated. Design documentation, which consists of dispositional drawing, drawing of truss for manufacturing, drawing of indicative details and plan of anchorage, is a part of the thesis.
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Steel footbridge in Černotín
Kelar, Petr ; Štrba, Michal (referee) ; Barnat, Jan (advisor)
The thesis deal with structural design of steel footbridge for pedestrians and cyclist over the Bečva river in Černotín village. Span of the footbridge is 50 m. The basic material is steel S355 and S460. At the beginning were created two variants. First one is an arched footbridge and the second one is cable stayed footbridge. After evaluation variants was selected the cable stayed footbridge. The selected variant was assessed in detail including joints and bearings. Structure is designed in compliance with valid standards of ČSN EN and corresponds with ultimate and serviceability limit state. For structural design was used software RFEM 5.17.01 of Dlubal company.
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Welding Basic Course on 135 Technology
Dolejský, Tomáš ; Opletal, Jan (referee) ; Kubíček, Jaroslav (advisor)
TOMAS DOLEJSKÝ: Welding Basic Course on 135 Technology. The project developed within the framework of the bachelor's study of a branch Engineering technology presents a proposal for a theoretical and a practical parts of the welding basic course with a method 135 in accordance with the curriculum of Czech Welding Society-ANB. The latest norms or up to the present time still valid ones are presented in the project. A theoretical part contains a necessary minimum of requirements for participants of the welding basic course. In the chapter of a welding technology is presented a practical part of this welding process and important principles for a required quality of welded joints according to long-time experience. In a conclusion there is an interpretation of a norm ČSN 05 0705 according to what welding basic courses are realized and a welding process WPS is presented here and a proposal of examining tests for a passing an exam in a welding basic course.
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Construction of a multi-purpose vertical grill
Procházka, Jan ; Klapka, Milan (referee) ; Foltýnová, Dana (advisor)
The aim of this bachelor thesis is the design and subsequent construction of a vertical grill with electric drive. The thesis starts with an introduction where the function of the grills is described. Vertical grills and drives are reviewed and the current state of knowledge is discussed. This is followed by three conceptual designs and their comparison, with one of the designs being followed by a constructional solution. Finally, the key parameters and the choice of electronic components used to control the grill are summarised. A computational report detailing the solution procedure for the selected design nodes, control circuit diagram and drawings are included in appendix.
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