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Static analysis of the cross-section of the lock chamber
Skalník, Stanislav ; Koláček, Jan (referee) ; Zich, Miloš (advisor)
The bachelor‘s thesis deals with static solutions of the lock chamber. Background for this work were static calculations according to safety levels and drawing documentation of the actual structure. Goal is to evaluate the existing solution of the walls and the bottom of the chamber in selected sections based on the internal forces of the wall model created in the SCIA Engineer. Following with global analysis of a nonlinear model reinforced with the main load-bearing reinforcement according to the original design created in the Idea StatiCa Detail. The second part of this work was the design of an alternative solution of the chamber with a type of rib walls with dimensionability verification. Suggestion of the main wall reinforcement and reinforcement of the most stressed rib. Furthermore a comparison with the original solution from the point of view of deformation, material savings and subsequent assessment of the chamber leaching. Static calculations of both variants, drawings of the used reinforcement for the nonlinear model and drawings of an alternative solution containing the shape and schemes of the wall and rib reinforcement are included.
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Safety of a Commercial Aircraft after Damage to Airframe due to Terrorist Attack
Lošťák, Miroslav ; Salga, Jaroslav (referee) ; Kusák,, Jan (referee) ; Petrásek, Miloslav (advisor)
Modern-day terrorist attacks present a considerable danger for commercial aircrafts. This thesis analyzes potential methods of such attacks with a critical analysis of the most dangerous type: an attack from the outside of the aircraft via a fragmentation missile warhead. Such missiles cause damage to the airframe of the aircraft through fragments created by the explosion. In this thesis, analytical geometry is used to determine the area of the aircraft affected by the fragmentation. The aircraft’s geometry and the fragments’ dispersion are calculated by analytical functions, and the effect of the damage is analyzed. A shooting experiment was also carried out, in which fragments were shot at a reinforced skin panel that was manufactured according to the real design of commercial aircraft. The results of the experiment revealed that only directly hit sections of the structure are damaged. Data obtained by the experiment was then used for the creation and improvement of the model used in the simulation by means of the finite element method. This model is used for the numerical calculation of the damage sustained. Further included in the thesis is an analysis of the change in the load-bearing capacity after such an attack. The relationship between the size of the damage and its effect on the load-bearing capacity of the component as well as the entire structure is defined. First, the effect of component damage is analyzed via the FMEA/FMECA methods. This analysis is then extended using fuzzy logic. Fuzzy logic analysis is based on the determination of the size of the damaged component area and the component’s importance on the structure’s carry loads. Application of the defined approach is described for several parts of an aircraft’s life cycle, including development, operation after the terrorist attack, and assessment of causes after a crash caused by a fragmentation missile warhead.
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Family house
Purgat, Martin ; Zlámalová, Pavlína (referee) ; Švaříčková, Ivana (advisor)
Bachelor's prize dealing with the state of all states in the territory of the family house. The aim of the work is to design new layouts and adjust the branches designed in the presented products in internships in internships in internships of internships of internships. Subsequently, a static calculation of the city by contractions is made, which includes their dimensional and assessment of the ultimate limit state and usability. The individual bones of the ceiling located above the ground floor family houses are assessed for these conditions. Between the assessed contrasting jaws, a monolithic ceiling slab, beams, balcony, staircase and column, which is directly connected to the ceiling slab. The calculation of internal forces was demonstrably in the student versions of the Dlubal RFEM 5 program. It is part of the trade documents for the life of the mentioned elements. The export was proceeded according to valid standards and principles.
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Static solution of a floating concrete pier
Dorňák, Josef ; Nečas, Radim (referee) ; Zich, Miloš (advisor)
The bachelor´s thesis deals with the design of a floating concrete pier to be used for landing of helicopters of the Medical Rescue Service of the Czech Republic. The basic for the thesis was a study of the structure with plan dimensions, location on the river and a longitudinal section of the structure with elevation marks. The aim of the thesis is to desing a cross-reinforced slab and walls. In total, the structure consists of 8 identical components. To calculate the internal forces, a 3D model supported by an elastic substrate of calculated stiffness was created the Scia Engineer 22.0. Based on the outputs from the program, the flexural reinforcement was designed. Using non-linear calculation, the structure was assessed for serviceability limit state and the results were compared with the manual calculation of crack width. Handling and anchoring handles were also designed. At the end of the thesis, the connecting element was assessed and its reinforcement was proposed. The theoretical part, static calculation and drawing documentation are part of the thesis.
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Steel structure of library
Karlíková, Magdaléna ; Horáček, Martin (referee) ; Pešek, Ondřej (advisor)
The topic of the bachelor thesis is a design and check of a load-bearing steel structure of a library. The structure is located in Nivnice and it’s ground dimension is 24 x 30 m. Its height, including the attic, reaches 6 m. The building is designed as a single hall, whose ceiling structure is a lattice grate with 1 m height, which is supported by 16 columns. These columns are at an 34 degree angle, which helps with rigidity of the structure. Another element ensuring the rigidity are the ceiling bracings, which are located around the perimeter of both upper and bottom lane of the grate. Roof cladding is attached to the beam of the upper lane in just one direction and the wall cladding is attached to both lanes. Structure is made out of steel S235. Thesis includes the assesment of the main load bearing structure elements, it’s details and drawing solutions.
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Static solution of a typical underground floor of a tall building in Prague
Maršálek, Filip ; Šimůnek, Petr (referee) ; Zich, Miloš (advisor)
This bachelor's thesis deals with the static design of the ceiling structure of a high-rise building. The basis for the bachelor was drawing documentation with basic plan dimensions and heights. The aim of the work is to design a locally and point-supported ceiling slab in the form of a section of one floor, specifically the ceiling above the second underground floor. According to the assigned study, a board model was created in the SCIA Engineer program for the analysis of internal forces, on the basis of which the design of the bending reinforcement of the board was carried out for the limit state of bearing capacity. The design of the shear reinforcement is based on the internal forces from the 2D model and was carried out using the Schöck Bole program with manual verification of selected parts. Furthermore, crack widths were manually calculated and verified via SCIA Engineer. The last calculation was a non-linear deflection calculation in SCIA Engineer. The conclusion of the work was the design of a variant with headers and a comparison of both types of boards. The work includes static calculation and drawing documentation.
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Evaluation of asphalt pavements bearing capacity based on Traffic Speed Deflectometer diagnostics
Březina, Ilja ; Gschwendt,, Ivan (referee) ; Čelko,, Ján (referee) ; Hýzl, Petr (advisor)
The submitted dissertation focuses on the use of a Traffic Speed Deflectometer (TSD) for diagnosing bearing capacity of asphalt pavements, verifying a new method of non-destructive deflection measurements, and producing a method for indicative evaluation of asphalt pavement bearing capacities at the network level in the Czech Republic. The theoretical part describes the principle of TSD device measurements, evaluation methods for measured data, and summarizes the existing foreign experience with TSD devices, including the correlation with a Falling Weight Deflectometer (FWD). The practical part contains an analysis of performed measurements, evaluates the findings of studying the correlation between a TSD device and an FWD device during a comparative measurement in the Czech Republic, and presents a calculation method for deflections from primary data measured by the TSD device. Based on the obtained results, a method for indicative evaluation of asphalt pavements bearing capacities at the network level is designed.
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Frame bridge
Kapsa, Štěpán ; Velešík, Marek (referee) ; Koláček, Jan (advisor)
The work deals with the design of a single-pole frame structure of a road bridge, which is based deeply on piles. Due to the size of the span of 26 m, additionally prestressed cables are designed in the supporting structure. The structure is analyzed by a three-dimensional bar model and assessed for serviceability and load-bearing limit states in the longitudinal and transverse directions. Part of the design is a study of the influence of supporting the computational model and a comparison of the effect of active and resting earth pressure on the structure.
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