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Parametric study of road communications
Píštěk, Petr ; Matuszková, Radka (referee) ; Kosňovský, Michal (advisor)
The goal of the bachelor’s thesis is a parametric study of a road Uherský Ostroh - Hluk. Both vilages are situated in Zlin region. It is situated 28km southern from city Zlin. The goal of study is adopt work with projection software and comparison different categories of road in the same maps background. There are designed 3 categories S7,5; S9,5; S11,5. Variants are led across the agriculture area.Each variant include old and new road.
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Numerical simulation of volume changes of selected cementitious composites
Drbušková, Magdaléna ; Veselý,, Václav (referee) ; Keršner, Zbyněk (advisor)
This thesis deals with volume changes of selected cementitious composites. They are divided into two parts, theoretical and practical. The theoretical section describes the volume changes that occur in concrete structures. The practical part is focused primarily on the initial stage of shrinkage specimens of two-component cement composite (cement paste + aggregate) and it´s numerical simulation. For analysis were used SpatiDist and FyDiK 2D computer applications. It was simulating shrinkage of specimens with and without notch to compare. The result is a parametric study which reflects the influence of type and size of grain aggregate and shrinkage degree of cementitious paste.
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Design of concrete structures reinforced with non-metallic FRP reinforcement
Golisová, Michaela ; Januš, Ondřej (referee) ; Kostiha, Vojtěch (advisor)
This diploma thesis investigates the design of concrete structures reinforced with non-metallic FRP reinforcement with a focus on solving the bearing capacity in extrusion. The work is divided into a theoretical and a practical part. The theoretical part begins with an introduction to FRP reinforcement and a description of shear stress. The following is an introduction to current approaches dealing with this issue. In the practical part, in connection with these regulations, parametric studies are developed to compare the influence of individual input parameters and selected regulations. The last part is dedicated to the design and nonlinear analysis performed in the ATENA software.
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Analysis of a joint of steel tubes members and its practical use in load-bearing structure of a pedestrian bridge
Kuttelwascherová, Olga ; Balázs, Ivan (referee) ; Pešek, Ondřej (advisor)
This master‘s thesis deals with the analysis of the behaviour of the joint and its subsequent use in the supporting steel structure of the pedestrian bridge. The detail in question may find application as a structural solution for the crossing of closed cross-sections. The analysis of the joint consists of experimental analysis, numerical analysis and parametric study. Furthermore, the structural design of the pedestrian bridge was carried out. The pedestrian bridge is located in the grounds of a primary school in Litomyšl. It enables the connection of two existing buildings. In the design of the pedestrian bridge, the detail in question is used at the crossing point of the bracings. All steel elements are designed in S355 structural steel. In addition, wooden elements for the walking surface are designed in C30 coniferous wood and glass panes acting as a curtain made of insulating glass. Dlubal RFEM was chosen for the numerical analysis, parametric study and the structural model of the pedestrian bridge.
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Parametric study of air cooled heat exchanger
Tichý, Marek ; Toman, Filip (referee) ; Baláš, Marek (advisor)
This diploma thesis deals with air-cooled heat exchangers. Firstly, these types of heat exchangers are described theoretically in many different variations. The following part of the diploma thesis is focused on thermohydraulic calculations that aim to determine the resulting heat transfer coefficient and the necessary heat exchange surface. This calculation depends on the chosen piping and its geometry. The design of a specific heat exchanger follows the calculation, which is documented with a projection drawing. In the following section, a parametric study is conducted to investigate the dependence of heat exchanger properties on changes in its geometry.
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Design of concrete elements with FRP reinforcement
Mrkvová, Kateřina ; Lagiň, Juraj (referee) ; Kostiha, Vojtěch (advisor)
This diploma thesis focuses on deflection of reinforced concrete structures with FRP rebar. The thesis presents and compares various approaches on deflection of reinforced concrete structures with steel and FRP rebar based on national and international standards and existing research. The aim of the thesis is to point out differences among the various approaches and present the most suitable one for the particular case. Based on theoretical and experimental results, the goal is to modify one of the existing approaches or present a new method which would correspond with real deflection behaviour of FRP reinforced concrete beam. Simply supported beam with three-point bending was selected as a reference element. Analytical study and numerical analyses by ATENA software are performed. Results of analytical and numerical study are compared to experimental results.
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Effects of hydrogen addition to natural gas on steam boiler operating parameters
Kocman, Lukáš ; Skála, Zdeněk (referee) ; Baláš, Marek (advisor)
This work deals with the influence of hydrogen addition to natural gas on the parameters of steam boiler operation. In the first part of the work, a steam boiler for natural gas is designed, which is then recalculated for natural gas with a volume concentration of hydrogen in the range of 5–50 %. Calculations for individual concentrations were performed in the Mathcad program and were placed in the appendices. Finally, the results are summarized and commented.
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Software support in creating a complex calculation tool
Zich, Jan ; Jegla, Zdeněk (referee) ; Kilkovský, Bohuslav (advisor)
The master’s thesis is focused on the calculation of a heat exchanger with a crossflowed tube bundle found most in the air-cooled heat exchangers. The knowledge gained from the literature search is used to create libraries, giving a choice of several different methods in the hydraulic and thermal calculation as well as other key areas. These libraries allow their implementation in the comprehensive computational software P.E.C. developed at the Institute of Process Engineering. The thesis includes a verification of the correctness of the library’s calculations with showcased problems as well as 2 parametric studies. These investigate the dependencies of the transverse and longitudinal pitch on some of the process parameters of the heat exchanger.
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Theoretical Research of the Influence of Changes in Input Parameters on Load Capacity and Quantity of Shear Coupling
Hrabovská, Kristýna
This research is focused on coupling elements and their load-bearing capacity in steel-concrete composite beams. Specifically shear studs and their possible replacement with blind bolts and thus achieving demountability of the structure. The first phase of the research focused on shear studs. Mainly on their necessary quantity and placement on the beam and on how the change of dimensions and materials will affect their load-bearing capacity. The outputs from this phase should be used in the next step, where the bolts will be considered instead of the studs and their load capacity will be compared.
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