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Design of a railway frame bridge
Findura, David ; Brtáň, Stanislav (referee) ; Nečas, Radim (advisor)
This thesis deals with a design of a two-track railway frame bridge over a valley. Out of three proposed variants was chosen the variant number 1 - prestressed frame construction with variable beam section. According to actual EN standards the construction was designed and assessed to the serviceability limit state and the ultimate limit state.
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Railway bridge over a local brook
Libiger, Martin ; Trenz, Jan (referee) ; Nečas, Radim (advisor)
The purpose of this work was to design a bridge local stream to convert single-track railway line. The possible variation deals with the construction of prestressed girder bridge on one field with the lower deck. The aim of this work was to design and evaluate the structure on the basis of ultimate limit states and serviceability limit states according to applicable EN standards.
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Design of a one-span bridge over a local brook
Haluška, Ľuboš ; Koláček, Jan (referee) ; Nečas, Radim (advisor)
The aim of this thesis is the design and analsysis of a one-span bridge over a local brook. Two variants were designed. The variant of one-span prestressed beam bridge with lower bridge desk was chosen for analysis. The calculation of load effect was made in software Scia Engineer. The supporting structure is assessed for the ultimate limit state and the serviceability limit state according to the europien standards. The time dependent analysis is not trated in this thesis.
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Rail bridge over river Váh between Nemšová and Trenčianska Teplá
Lezová, Lívia ; Horáček, Martin (referee) ; Pešek, Ondřej (advisor)
The diploma thesis is focused on the design of a new steel structure of a single-track railway bridge with bottom bridge deck. The solved bridge construction is located on line No. 123 between Nemšová and Trenčianska Teplá at the point, where the line crosses over the river Váh. The existing bridge on the line has a span of 50 + 50 + 50 + 50 m. The assignment was processed in five variants of a steel bridge structure with a bottom orthotropic deck. Each variant has a different static system, a different number of fields and a different type of superstructure. The comparison of variants was performed using multicriterial evaluation based on selected criteria. The most suitable variant was elaborated in more detail. The calculations were performed according to valid ČSN EN standards.
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Stress and deformation analysis of railway bridge over the Odra River
Svoboda, Josef ; Profant, Tomáš (referee) ; Fuis, Vladimír (advisor)
This bachelor thesis deals with strain, stress and deformation analysis of the planar truss bridge construction. The aim is to determined the size of axial forces for statically determinate system and then making construction changes to reduce axial stresses in the individual beams in the structure. This structural modification becomes statically indeterminate structure. To solve this problem we consider different positions of the train at the bridge. The obtained values we can use to assess stress and deformation of the structure and the analytical results will be compared with the results obtained using the finite element method.
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Load-carrying steel structure of railway bridge
Ganglbauer, Tereza ; Melcher, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The master thesis focuses on the design of a Load-carrying steel structure of railway bridge with bottom steel deck of the span of 28 + 45 + 23 m. The bridge is situated in the municipality of Třebestovice. Four variants of solution have been calculated. Two variants are made by plate main beams of variable profile, the next alternative was made by truss structure and the fourth variant consist of a combination of plate main beams with truss stiffener in the middle span. The most optimal solution was processed in detail. The calculations were done in compliance with valid ČSN EN norms.
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Static analysis of railway bridge
Bureš, Vojtěch ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The bachelor thesis deals with the static analysis of a railway bridge. Using AxisVM X6 software, I created 4 different models and compared them not only with each other, but also with simple manual calculations. Two models are beam models, the third is shell model, the fourth is also shell but with an end ledge that reinforces the entire structure. The structures are loaded by a manually calculated load according to the standard.
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Design of a one-span railway bridge
Tomisová, Gabriela ; Panáček, Josef (referee) ; Nečas, Radim (advisor)
The topic of this thesis is a design of an one-span bridge over a river, a bicycle path and a route for pedestrians. The construction of prestressed beam bridge with one field with lower bridge deck is preferred out of all developed options. The construction is designed and assessed to the ultimate limit state and the serviceability limit state according to actual EN standards.
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Study of dynamic effect on a bridge structure with moving loads
Zavřelová, Michaela ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The goal of the master thesis is a dynamic parametric study on the dynamic effects of high-speed train using the HSLM-A load model on a railway bridge. The calculation model is processed, in RFEM 5.29.01 with RF-MOVE module and prerelease versions RFEM 6 and RSTAB 9, as a 2D member in the XZ plane. Furthermore, static load cases and load models LM 71 and HSLM-A are created. The HSLM-A load model is processed for universal trains A1-A10, which each cross the railway bridge at a total of 15 speeds ranging from 120 km/h to 400 km/h. A detailed parametric study of the dependence of the maximum deformation and acceleration in the Z direction on the speeds of each train set is performed. Modal and time history analysis is used in the parametric study. Part of the work is to determine the resonance region.
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Railway bridge with steel load-carrying structure
Šarmanová, Iveta ; Melcher, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The subject of master’s thesis is a structural analysis of a bearing structure of an existing historical single-track railway bridge over the Vltava river in a direction from Prague Modřany to Vrané nad Vltavou. The riveted steel bridge carries rail traffic across five fields. A part of the master’s thesis is focused on a disposal of a variant of the longest field by using a modern arch construction.
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