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Analysis of the structure for the effects of earthquakes
Švejcar, Martin ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
This master thesis deals with analysis of a selected construction subjected to a seismic load. In the Dlubal RFEM programme, a basic model was created and analyzed with the spectral analysis using response spectra and with the time analysis using accelerograms from the database of the programme. The outcomes from these analyses were compared. Subsequently, the same calculations were performed on modified models and the results of the internal forces and deformations of the structure were compared with the outputs obtained on the original basic model.
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Static Analysis of chosen Structure
Jankovičová, Soňa ; Vlk, Zbyněk (referee) ; Martinásek, Josef (advisor)
The bachelor thesis focuses on static analysis of the steel footbridge, inspired by real footbridge over the Morava river. Bridge was designed as a solid ribbed arch, so it consists of a pair truss beams, reinforced by two steel arches with suspenders. A similar model is created the SCIA Engineer program. The total length of the footbridge is 137,5 m in projection and the highest point of bridge is 9,13 m. This bachelor thesis is processed according to valid standards. The structural load is calculated manually. Furthermore, some known methods are used to calculate statically indeterminate structures to find internal forces. For these calculations, is used a simplified bar model standing on four point supports. Afterwards, the results are compared.
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Static analysis of steel structure
Hrubá Šintálová, Klára ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
This bachelor thesis deals with the static analysis of the steel construction of the lookout tower in the shape of a digit seven consisting of two parts which mutually affect each other. The 3D model of the construction was created in the program RFEM by company Dlubal which uses a finite element method for the calculations. Moreover, the program RWIND Simulation was used to arrive at the calculations in the cooperation with analysis of the construction via wind tunnel method. The construction is assessed according to the valid standards. The selected elements of the construction are manually assessed and compared with the parts of the calculation model.
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Static analysis of the roof
Hořínek, Josef ; Vlk, Zbyněk (referee) ; Martinásek, Josef (advisor)
The Bachelor Thesis focuses on a static analysis of a timber roof truss. This roof trust is part of the saddle roof on the family home. The load on the structure is calculated manually according to valid standards. The load is divided into a total of 11 load cases. The calculation model of the structure is created in RFEM. Results of internal forces and deformations are checked by manual calculation using methods for statically indeterminate structures. These values are compared at the end.
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Static analysis of acoustic enclosure
Hándlová, Barbora ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
The subject of this Bachelor’s thesis is a structural analysis of acoustic enclosure, which is located above production facilities. The enclosure is assembled of elements with a load-bearing skeleton made of steel. It is possible to dismount the enclosure in parts. Computational software RFEM was chosen to model the 3D structure. The aim of this thesis is an assessment of ultimate and serviceability limit state of some selected elements. Some of the results obtained from the RFEM program are verified by hand-done calculation.
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Numerical modeling of wind load on photovoltaic panels
Zajac, Zbyněk ; Vlk, Zbyněk (referee) ; Martinásek, Josef (advisor)
This bachelor’s thesis deals with wind loading on photovoltaic panels installed on a flat roof. Numerical calculation was made for a fictitious building. Photovoltaic array was installed according to the general principles. Wind load on the array was applied in different directions in order to calculate the highest value in the area. Calculation and interpretation of results were done in ANSYS. Results were compared with coefficients given in the Dutch standard NEN 7250. This standard is not part of European standard.
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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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Static analysis of the lookout tower
Šoupalová, Kristýna ; Martinásek, Josef (referee) ; Vlk, Zbyněk (advisor)
This bachelor’s thesis deals with the static analysis of the steel construction of the lookout tower in the shape of a helix. Two 3D models, which differs in the way the columns are modeled, were made with RFEM 5.25 software by Dlubal company. The models are loaded with the calculated loads and afterwards the results of both models are compared. There are also a third 3D model, which includes surfaces. This model is put to a wind tunnel through Dlubal RWIND software. Then the comparison of the wind loads calculated according to the valid standard and the RWIND results is made.
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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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