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Steel Load-bearing Structure of a Car Showroom and Repair Centre
Thomanková, Lucie ; Buchta, Stanislav (referee) ; Bajer, Miroslav (advisor)
Diploma thesis includes design and examination of steel load-carrying structure. Construction includes car deal warehouse and car repair shop with extension for car varnishing. Car deal warehouse has ground dimensions 22 x 30 m and total high 10 m. Main frame is composed of Vierendeel trusses with arc shape. Car repair shop has ground dimensions 20 x 30 m and total high 10 m. Main frame is composed of truss girders and web-plate columns. Frame extension has ground dimension 20 x 10 m and total high 6,4 m. Cladding is composed of sandwich panels. Store´s gable wall and a part of the roof are glass. Climatic load is intended for locality Ostrava.
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Effect of layer thickness on critical angle of additively manufactured lattice structures
Nosek, Jakub ; Vrána, Radek (referee) ; Vaverka, Ondřej (advisor)
Aim of this work is to describe the effect of a layer thickness on critical angel of a lattice structures manufactured by SLM technology. The effect of layer thickness was investigated on single struts and on lattice structures made from stainless steel 316L. Better geometrical accuracy could be obtained, if the smaller layer thickness is used. Less attached powder particles on downskins was also observed on lattice structures. Thanks to this thesis, it is possible to determine, if it is meaningful to decrease the layer thickness in order to improve manufacturability of lattice structures even with higher manufacturing time.
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Design of prestressed bridge structure
Tylčer, Jan ; Rybák, Vít (referee) ; Klusáček, Ladislav (advisor)
This thesis describes the design of a road bridge in Trutnov through local communication. It is designed prestressed dvoutrámová construction of two fields with twin inclined struts. It developed a detailed static analysis and the bridge is considered to I. and II. limit state according to European standards - Eurocode. It is prepared detailed drawings.
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Measurement of the length and volume stiffness of steel bellows
Valík, Michal ; Roupec, Jakub (referee) ; Mazůrek, Ivan (advisor)
This bachelor’s thesis deals with the experimental measurement of the length and volumetric stiffness of steel bellows. The first part is dedicated to the analysis of the utilisation of metal bellows connected to the mentioned theme. This part also deals with the actual knowledge of metal bellow’s stiffness characteristics. The second part contains descriptions of selected methods of the measurement process. The last part of this work focuses on the evaluation and analysis of measured data in order to gain the results of the length and volumetric stiffness of metal bellows.
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Multipurpose load-bearing timber hall structure
Matuška, Martin ; Sýkora, Karel (referee) ; Straka, Bohumil (advisor)
This Master’s thesis is focused on the design and structural analysis of load-bearing structure of a multipurpose hall that is strained by the permanent load, working load and climatic load. The hall has the shape of an elliptical dome. Maximum margin of the structure is 60,0m and maximum height is 18,0m. Main carrier elements of the structure are radially arranged curved beams made of glued laminated timber, class SA(GL24).
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EV-55 aircraft modification for water level landing
Šponer, Jan ; Vaněk, František (referee) ; Chybík, Ladislav (advisor)
Diplomová práce se zabývá modifikací stávající pozemní verze letounu EV-55 pro možnost přistání na vodní hladině. Snahou je najít takovou variantu, která nepovede k výrazným konstrukčním zásahům do draku letounu a bude vyhovovat stavebnímu předpisu CS 23, zejména požadavkům týkající se plovatelnosti a stability na vodě. Je proveden hmotový rozbor modifikované verze a s tím související omezení hmotové obálky a rozsahu centráží. Zatížení od vody je spočítáno v souladu s CS 23. Pro toto zatížení je následně navrhnuto konstrukční řešení uchycení plováků k trupu a provedena pevnostní kontrola jednotlivých prvků a spojovacích uzlů. Tyto hodnoty jsou dále porovnány s pozemními případy zatížení a stanoveny součinitele rezerv. V závěru jsou spočítány letové výkony: maximální horizontální rychlost, stoupavost, dolet a vytrvalost.
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Wing fatigue safe life investigation of single-engine multipurpose aircraft
Hubáček, Jan ; Juračka, Jaroslav (referee) ; Chybík, Ladislav (advisor)
Práce se zabývá stanovením bezpečné únavové životnosti křídla. Letadlo, které bylo podrobeno analýze, je vzpěrový hornoplošník celokovové konstrukce. Letadlo je certifikováno na základě předpisu FAR 23 Amendment 23-46. Výpočet bezpečné únavové životnosti musí být proveden v souladu s požadavky předpisu FAR 23 a jeho poradními oběžníky.\\ Teoretická část práce je věnována hlavně přehledu literatury a představení projektu, kde byla stručně shrnuta jeho historie vzniku. Část přehledu projektu také pojednává o podstatě požadavku na posouzení bezpečné únavové životnosti zadavatelem. V další části byl rovněž proveden rozbor literatury týkající se únavy. Jednalo se zejména o rozbor předpisu FAR 23, jeho poradních oběžníků a obecně literatury vztahující se k únavě jak v letectví, tak v obecném strojírenství.\\ Druhá část diplomové práce byla zaměřena zejména na výpočetní analýzu a vývoj specializovaného software. Výpočetní část obsahovala zejména přípravu vstupů, včetně obálek zatížení, stanovení typického letu, výpočet zatížení křídla a napjatostní analýza ve vybraných řezech křídla. Z výstupů prvotní analýzy se následně provedl výpočet poškození a životnosti pro daný typový let.
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Steel structure of swimming pool roof
Krchnák, Martin ; Barnat, Jan (referee) ; Štrba, Michal (advisor)
This bachelor thesis describes the design and assessment of steel structure of the swimming pool roof. The supporting structure of hall has 40.00 meters span, 50.00 m length and 10.53 m height. Main construction material is steel, grade S355 and S235. There were compared 2 possible variants of the roofing, and one of them was calculated in detail. There is developed a static analysis of the main load-bearing parts of the structure, including joints and selected details. The supporting structure of roofing consists of the polygonal wrapped lattice structure made of steel circular in the transverse direction.
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Návrh konstrukce suchého doku pod svislým zatížením
Zetková, Simona ; Polák, Barnabás (referee) ; Uhrin, Michal (advisor)
The aim of this thesis is to undertake simplified design and assessment of cofferdam under vertical surcharge in the form of virtual project. Cofferdam constructed on the sea shore must be able to withstand all loads to enable construction of cut and cover tunnel. As a part of the design it is required to assess ground conditions and it is necessary to review feasibility of the structure on the sea. The construction will be described in construction phases and graphically demonstrated in construction sequence drawing. Because the structure is designed for life time of five years, temperature load on struts is studied in the thesis and further considered in structural analysis. Furthermore, it is required to compare analytical models from GEO5 and PLAXIS. Horizontal frame is analysed separately in Scia Engineer. Structural members – cofferdam wall, waler beam and strut are checked in this thesis. For the design of the cofferdam wall second order theory is considered. All mentioned requirements were accomplished with help of corresponding Eurocodes, books and technical advice. Results of this work are feasible and it was possible to design all members to enable construction of the cut and cover tunnel. The phasing was designed such that deformation of the cofferdam is minimalized and use of machinery is limited to machines on temporary platforms. Comparison of two different analytical models showed that different soil modelling has great effect on internal forces, even though the shape of the bending curve is very similar, values obtained from PLAXIS software are much higher. Assessment of the structural members is done according to Eurocode 3, and horizontal frame is checked also against disproportionate collapse.
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