|
|
Dynamic luminance measurement
Drašar, Vojtěch ; Motyčka, Martin (referee) ; Škoda, Jan (advisor)
The thesis deals with the comparison of dynamic and static methods of measuring brightness on roadways. The thesis verifies the ability of current measurement techniques to analyse luminance ratios from the perspective of a moving observer, which can be, for example, a car driver. The measurement results are processed and modified using the LumiDISP program. Dynamic measurements are performed on selected systems, including the evaluation of the results.
|
|
|
The use of 3D technologies in the realizatation of road constructions
Bartlík, Aleš ; Tejkal, David (referee) ; Hýzl, Petr (advisor)
This bachelor's thesis deals with the possibilities of using 3D technologies in the realization of road constructions. The first part of the thesis contains general information about BIM, its advantages and obstacles and describes the use of construction machines including their connection with the 3D model of the construction. In the second, practical part, a specific construction site is assessed where a 3D model was used to guide construction machines.
|
|
|
Rejvíz Bridge in Jeseník
Dvořák, Jan ; Smítal, Petr (referee) ; Holcner, Petr (advisor)
The subject of my diploma thesis is to design the intersection of roads I/44 and II/453 in urban area of Jeseník. Part of the proposal is to address traffic and pedestrian connection to the adjacent tertiary roads.
|
|
|
The usage of asphalt and concrete recycled materials to roads
Svrčina, Vít ; Valentin, Jan (referee) ; Stehlík, Dušan (advisor)
Currently it is important to address the re-use of building materials from construction reconstructed or upgraded roads. Commonly used technologies cold and hot asphalt recycling are starting using to complement with technologies using cold asphalt mixtures with rejuvinators or softeners. This type of asphalt mixtures could be used in pavement constructions with lower traffic load. This thesis deals with the design and laboratory assessment of unbound and bound mixtures R-material and recycled concrete. This thesis is experimentally testing the possibility of using functional tests to optimize the design of asphalt mixture with 100% representation of R-material with a possible revival of asphalt emulsion with a rejuvenator.
|
|
|
Modern Trends in Vehicle Front Lights Design
Rada, Jakub ; Maršálek, Ondřej (referee) ; Raffai, Peter (advisor)
This bachelor’s thesis deals with the modern trends in the design of the headlamps. The first part presents the sequential stages of development of systems used for headlamps and their design solutions. The second part focuses on the possible cooling alternatives of functional parts in lighting modules, completed with the results of comparative laboratory tests performed by front manufacturers of automotive lighting. The final section contains a comparison of the currently most widely used technologies in the vehicle front lighting.
|
|
|
Variant solution I/57 in section Semetín-Bystřička
Kovářová, Veronika ; Čepil, Jiří (referee) ; Kosňovský, Michal (advisor)
The subject of my thesis is a variant I/57 in the section Semetín-Bystřička. The proposed route of communication, was part of an existing communications maintained for its full utilization. Were drawn four proposed variants of the solution, 3 variants are trying their best to use existing communication Jablůnka the village, one suggested option B that leads outside the existing road.
|
|
|
Tyre Mathematical Models
Rubíček, Pavel ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
Today the tire is an integral part of the vehicle. During its development is used in various methods. This publication deals with some of them. In her research is necessary to know its features and design solutions. Basic tire structure is described in the first part. These findings are then fit to the other chapters. In the second part there are examples of several tire models in the form of mathematical equations. These equations are used to determine the force and moment loads acting on the tire. The resulting load may aid in the design of new types of tires. The last part describes how to use mathematical models to calculate and here are other methods how else can it gets information about the load on the tire. There is a list of organizations that deal with simulations and tests.
|
|
| |
|
|
Current situation of research into interaction of tire with surface
Kleger, Ondřej ; Kašpárek, Jaroslav (referee) ; Pokorný, Jan (advisor)
Modeling and simulation belong to very important tools used in automotive industry of present days. Simulation forms basis for both – new vehicle development and also improvement of vehicles already in production. A key role of simulation may be seen in the development of vehicle active safety features such as “Anti-Block System” (ABS), “Anti-Slip Regulation” (ASR), “Electronic Stability Program” (ESP) etc. As a common feature, all of the listed systems require accurate simulation of the interaction between the tire and the road surface. Thanks to simulation tools we can model driving situations and behavior of the whole system so that it nearly mimics real behavior of the vehicle on the road. Nevertheless; despite continuously increasing accuracy of the simulation tools, a development process still cannot be completed without real tests and measurements on tires and road surface characteristics.
|
|
|
The use of asphalt recycled materials in the base and subbase layers of pavements
Tanečková, Pavlína ; Hýzl, Petr (referee) ; Stehlík, Dušan (advisor)
This thesis consists of theoretical and practical parts. The theoretical part gathers available information on the current state of construction and demolition waste management. This part discusses foreign experiences with SDW management, provides basic information on the introduction of circular economy. Equally important is the environmental impact, which is discussed from the perspective of Decree No 283/2023 Coll. It also provides basic information on construction and demolition waste and describes the recycling process. It also discusses the most common types of recyclates and their use in roads. The practical part of this thesis verifies the possibilities of using asphalt recyclates and their mixtures cemented with asphalt emulsion or hydraulic binder. The main objective was to verify the possibilities of using these recyclates in cemented subbase layers for urban roads. These possibilities were verified and then compared by means of laboratory tests. Finally, a comparison of cemented mixtures of asphalt recyclates with specific binder dosage and low temperature heating of the mixture for optimum compaction to the desired strength values using recyclates is made.
|
guest ::
