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Influence Selecting the Type of the Bridge Structure at km 332,420 of Railway Dětmarovice-Český Těšín by the Effects of Undermining
Chaloupka, Martin ; Puchner,, Josef (referee) ; Kmošek, David (advisor)
The aim of the master’s thesis was t odevelop alternative solutions supporting steel structure of the railway bridge on the undermined area. The range of single fields were chosen based on the location of existing substructures. Reducing the width of bridge openings were not allowed. Based on the geodetic survey plans were drawn up clear of the current state. On the basis of specifications for developing a detailed process was chosen variant Gerber’s beam reinforced with an arch in mean field. For this variant was performed structural analysis of the main parts of the main structure of the bridge, which was calculated with the effects of undermining. For variant Gerber’s beam were made clear drawings and drawing details of the selected steel bridge construction (new state). Further, detailed analysis of selected structural detail was made. Specifically, connecting rod to the main beam, which was designed optimal shape and thickness of the joints plate with a suitable radius of the firing to avoid plastification of the material in this area. Variant of the continuous beam without joints was prepared to. It has been observed, what is the effect of undermining on the stress in the construction of the bridge - was confronted with the effects on Gerber’s beam. To reduce stress in the construction of the bridge and compliance of ultimate state of applicability of the main beam has been designed bearing adjustment and after considering several options its implementation too. The economic comparison between the two variants was conducted. The assembling procedure was designed for both types of bridge structures. In the technical report we can read about due to the intention of building a new bridge and further we can find there other important technical information. In conclusion of the master’s thesis there has been recommended for the construction specific variant – from the perspective of an investor, and from the static aspect-view of the designer.
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Nonlinear buckling analysis of a flue gas pipe
Jelínek, Jan ; Vincour, Dušan (referee) ; Létal, Tomáš (advisor)
This thesis deals with the nonlinear analysis of stability loss of flue gas pipe. This pipe is a part of desulphurization line. The thesis describes the creating of a simplified FEM model. It also describes the setting of the boundary conditions of the model for few loading cases. These cases differ by preference for one of the load as dominant. There are proposed several variants of stiffening by light ring stiffener. The work is finished by comparing the resistance to the stability loss of the reinforced variants and unreinforced model of flue gas pipe.
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Family house load-carrying structure composed of thin-walled cold-formed steel profiles
Jančar, Ondřej ; Melcher, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The aim of the bachelor thesis is make a structural design of prefabricated family house. The load-carrying structure is composed of thin-walled cold-formed steel profiles. The family house is single-storey without basement. The object has rectangular ground plan with proportions of 9 x 14 m. The gable roof has slope 27°. Roof truss girders allows to make a attic space for storage seasonal things. The house is situated in city development of Bílovec. The object was designed according to currently valid standarts to the ultimate limit states and seviceability limit states.
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Family house load-bearing structure composed of thin-walled steel members
Bulíček, Radek ; Melcher,, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The aim of the bachelor thesis is to design and verify load bearing members of single-storey family house composed of thin-walled cold-formed elements. Parking space for cars of timber members is the part of the house, too. The family house is in rectangular plan with dimensions of 9.5 x 10.5 m. The roof of the house is hipped, on the side of the house with the parking place rafters are associated with garage rafters. The following elements were statically assessed: structural members of the house roof (rafters, collar tie, roof bracing), structural members of the ceiling (ceiling beams), reinforcing timber frame, external and internal load bearing walls (columns), load bearing elements of the parking space (rafters, purlins, columns). All assessments were performed according to currently valid standards. The calculation showed that the resistance and serviceability of all components are satisfied.
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Family house load-carrying structure composed of thin-walled cold-formed steel profiles
Jančar, Ondřej ; Melcher, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The aim of the bachelor thesis is make a structural design of prefabricated family house. The load-carrying structure is composed of thin-walled cold-formed steel profiles. The family house is single-storey without basement. The object has rectangular ground plan with proportions of 9 x 14 m. The gable roof has slope 27°. Roof truss girders allows to make a attic space for storage seasonal things. The house is situated in city development of Bílovec. The object was designed according to currently valid standarts to the ultimate limit states and seviceability limit states.
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Nonlinear buckling analysis of a flue gas pipe
Jelínek, Jan ; Vincour, Dušan (referee) ; Létal, Tomáš (advisor)
This thesis deals with the nonlinear analysis of stability loss of flue gas pipe. This pipe is a part of desulphurization line. The thesis describes the creating of a simplified FEM model. It also describes the setting of the boundary conditions of the model for few loading cases. These cases differ by preference for one of the load as dominant. There are proposed several variants of stiffening by light ring stiffener. The work is finished by comparing the resistance to the stability loss of the reinforced variants and unreinforced model of flue gas pipe.
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Buckling and Postbuckling of Delaminated Composite Plates
Obdržálek, Vít ; Vrbka, Jan (advisor)
Chování laminátových desek namáhaných na tlak či na smyk může být výrazně ovlivněno přítomností delaminací, tedy oblastí, kde je porušena vazba mezi sousedními vrstvami. Cílem této práce je rozšířit znalosti o chování delaminovaných desek, a to především o chování desek s větším počtem delaminací a desek s delaminacemi libovolného tvaru, neboť taková podoba porušení laminátu více odpovídá poškození vznikajícího v důsledku nízkorychlostního dopadu cizího tělesa na laminátovou desku. Disertační práce se skládá ze tří hlavních částí. V první části jsou stručně nastíněny postupy využívané při analýze boulení delaminovaných desek a jsou diskutována omezení těchto analýz. Dále jsou v této části shrnuty hlavní poznatky o boulení delaminovaných desek. V druhé části práce je popsán výpočtový model použitý v rámci disertační práce pro analýzu boulení delaminovaných desek. Schopnost modelu předpovědět chování delaminovaných desek je pak dokumentována na několika ověřovacích úlohách. Třetí část disertační práce se skládá ze tří samostatných studií chování desek s několika delaminacemi eliptického či kruhového tvaru a jedné studie zabývající se možností náhrady obecného tvaru delaminace kruhem či elipsou. Je probírán vliv řady parametrů na chování delaminovaných desek, konkrétně vliv orientace vrstev laminátu a dále vliv počtu, tvaru, orientace a umístění delaminací. Na základě těchto studií jsou pak zformulována doporučení ohledně postupu při posuzování únosnosti delaminovaných konstrukcí.
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Influence Selecting the Type of the Bridge Structure at km 332,420 of Railway Dětmarovice-Český Těšín by the Effects of Undermining
Chaloupka, Martin ; Puchner,, Josef (referee) ; Kmošek, David (advisor)
The aim of the master’s thesis was t odevelop alternative solutions supporting steel structure of the railway bridge on the undermined area. The range of single fields were chosen based on the location of existing substructures. Reducing the width of bridge openings were not allowed. Based on the geodetic survey plans were drawn up clear of the current state. On the basis of specifications for developing a detailed process was chosen variant Gerber’s beam reinforced with an arch in mean field. For this variant was performed structural analysis of the main parts of the main structure of the bridge, which was calculated with the effects of undermining. For variant Gerber’s beam were made clear drawings and drawing details of the selected steel bridge construction (new state). Further, detailed analysis of selected structural detail was made. Specifically, connecting rod to the main beam, which was designed optimal shape and thickness of the joints plate with a suitable radius of the firing to avoid plastification of the material in this area. Variant of the continuous beam without joints was prepared to. It has been observed, what is the effect of undermining on the stress in the construction of the bridge - was confronted with the effects on Gerber’s beam. To reduce stress in the construction of the bridge and compliance of ultimate state of applicability of the main beam has been designed bearing adjustment and after considering several options its implementation too. The economic comparison between the two variants was conducted. The assembling procedure was designed for both types of bridge structures. In the technical report we can read about due to the intention of building a new bridge and further we can find there other important technical information. In conclusion of the master’s thesis there has been recommended for the construction specific variant – from the perspective of an investor, and from the static aspect-view of the designer.
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Family house load-bearing structure composed of thin-walled steel members
Bulíček, Radek ; Melcher,, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The aim of the bachelor thesis is to design and verify load bearing members of single-storey family house composed of thin-walled cold-formed elements. Parking space for cars of timber members is the part of the house, too. The family house is in rectangular plan with dimensions of 9.5 x 10.5 m. The roof of the house is hipped, on the side of the house with the parking place rafters are associated with garage rafters. The following elements were statically assessed: structural members of the house roof (rafters, collar tie, roof bracing), structural members of the ceiling (ceiling beams), reinforcing timber frame, external and internal load bearing walls (columns), load bearing elements of the parking space (rafters, purlins, columns). All assessments were performed according to currently valid standards. The calculation showed that the resistance and serviceability of all components are satisfied.
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