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Evaluation of the current condition of the bridge structure
Urbánek, Filip ; Hrabová, Kristýna (referee) ; Láník, Jaromír (advisor)
The diploma thesis deals with the execution and evaluation of a structural and technical survey of a reinforced concrete bridge structure from 1923. The second objective of the thesis is to calculate the load-bearing capacity of the structure with regard to the results of the tests carried out. The theoretical part briefly describes the history of bridge construction, the methodology of bridge inspections and methods of diagnostic survey. In the practical part, in situ tests are carried out with subsequent laboratory evaluation and calculation of the necessary parameters. The geometric and material parameters of the structure were used as a basis for the creation of a structural model. The normal, exceptional and exclusive load capacities were recalculated and the necessary repairs and rehabilitation were proposed with regard to the observed condition of the bridge structure.
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Analysis and Management of Risks in terms of OHS
Rapantová, Eva ; Vymazal, Tomáš (referee) ; Hrabová, Kristýna (advisor)
This diploma thesis covers the risk analysis and risk management related to occupactional health and safety (OSH). The analysis of the current situation is done concerning the legislation of the Czech Republic and the European Union. The extension of the legal duties and obligations are formed by standards that follow the legislation, possibly provide the sphere for implementation and maintenance of the OSH management. Due to the interconnections between OSH and seeking the risks at the workplace, it is appropriate to use the methods for identifications and analysis of these risks. The chosen methods are applied in the research part of this work. The system access for searching and evaluating the risks provides data to find the weak spots causing risks at the workplace. For the main risks, the measures are proposed to eliminate them or at least minimize their occurrence. These measures and procedures and proposed with regards to their costs.
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Technical Risk Analysis
Sekanina, Jiří ; Hrabová, Kristýna (referee) ; Novotný, Radovan (advisor)
This master‘s thesis, entitled Technical Risk Analysis, focuses on the new harmonized FMEA method. The theoretical part deals with advanced quality planning, quality tools and a detailed description of all seven steps of the new FMEA method. The main goal of this work is to describe the harmonized FMEA method and create a case study on the topic of nonconforming product management. The harmonized FMEA will be illustrated in this case study.
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New opportunities for the use of concrete structures sustainability assessment tools for a forensic engineering
Hrabová, Kristýna ; Kuda,, František (referee) ; Prostějovská,, Zita (referee) ; Vymazal, Tomáš (advisor)
In recent years, the European Union has been working to revise its climate, energy, and transport legislation to align existing legislation with the goals set for 2030 and 2050. These ambitions are closely related to the principles of sustainability. A growing population places increasing demands on the environment. Thus, improving living standards without damaging the environment is becoming a global challenge. The construction industry is an important segment of the world economy and contributes to environmental pollution. The concrete industry can also be counted among the main producers of CO2 emissions. The future of concrete construction design will be linked to new but also ongoing transformations of our society. The rapidity, speed, and frequency of the changes that are being implemented will also create a new urgency for knowledge and methodology in this field, whether for concrete producers, designers, or forensic experts. The focus of this thesis is the need to respond to new requirements in the field of concrete structures. In June 2016, the fib board approved activities to start working on the development of an updated fib Model Code 2020 (MC2020). This Model Code 2020 will form the source of new versions of the relevant Eurocodes and ISO standards, with sustainability as a fundamental requirement. Therefore, the design of a structure will now have to take into account not only durability considerations but also performance and overall environmental impact. Therefore, the dissertation focuses on the analysis of new trends in concrete structures to categorize the areas of change that may occur. The thesis deepens understanding of the areas of change as well as the methods of evaluation of building materials and concrete structures. Based on the identified shortcomings of the methods to assess the sustainability of materials, a sustainability indicator for CSB has been proposed. The changes brought about by the new fib Model Code 2020, whether in terms of performance-based design, use of recycled materials, or optimization of structures, may lead to defects and failures in building structures and new types of legal dispute for which there are no algorithms for resolution. In this paper, modern devices used for defectoscopy of defects and failure of concrete structures are also described.
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Financial analysis of Renewable energy
Kožík, Martin ; Hobst, Leonard (referee) ; Hrabová, Kristýna (advisor)
This thesis is focused on renewable energy sources, which are currently and increasingly used. Primarily for passive and low-energy houses. The principles that apply to heat pumps and solar collectors with thermal storage, which are suitable for new or older buildings, are described in detail. The thesis analyzes the thermal properties of the object under consideration and the proposed heat pump with its calculation and determination of the payback period of the investment in dependence on the analysis of energy price development in the las 10 years.
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Identifying the Sources of Risk Related to Road Transport of Hazardous Substances and a Proposal of Measures for Reducing Losses on Public Assets
Poul, Adam ; Hrabová, Kristýna (referee) ; Martincová, Jana Victoria (advisor)
The master‘s thesis focuses on the risks of transporting dangerous goods by road. The introductory part deals with related legislation of the Czech Republic is analyzed, followed by international legislation. In the European Union, the transport of dangerous goods is regulated primarily by the European agreement concerning the International carriage of dangerous goods by road (ADR). Between 2002 and 2019, master‘s thesis analyzes and describes the statistics of traffic accidents with the presence of dangerous goods. Furthermore, this master‘s thesis also analyzes the characteristics of the sources of traffic accident risks, and when activating the risk, the possible effects of traffic accidents and subsequent leakage of dangerous goods are described. In fulfilling the aims of the master‘s thesis, agreement was found in the causes of traffic accidents in statistics and in the literature in the fact that in 80% it is the fault of the human factor. Analysis of a set of 10 large accidents with the presence of dangerous goods using a modified "What, if" method identified impacts on public assets. Based on these identified impacts, measures were proposed that would be appropriate to apply in the public interest.
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Heat recovery in Building Services
Hrabová, Kristýna ; Plášek, Josef (referee) ; Šikula, Ondřej (advisor)
This thesis deals with the optimization of sewer heat recovery. For proper design and optimization it is necessary to use three basic methods: diagnostics, heat balance calculations and modeling. In 2D software Area Calculation are simulated different types of sewer exchangers arranged in sewer pipes. Using models of software CalA and simulations will be selected optimal variant. Using software BSim, which is based on more zone numerical simulation of the energy needs of buildings in relation to indoor climate, are detected heat needs of an office building. The optimal number of sewer exchanger is designed from the identified performance heat exchangers and supplies heat for the building.
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Survey and Evaluation of Existing Construction
Kozubková, Tereza ; Hrabová, Kristýna (referee) ; Cikrle, Petr (advisor)
The diploma thesis deals with the survey and evaluation of the existing structure. The theoretical part of the work is focused on the description of devices and methods used for destructive and non-destructive diagnostics of existing objects. In the practical part, a search of previous surveys and their results is processed, and an own diagnostic survey of the structure is also carried out. Based on the results of the survey, a critical element of the structure is selected and statically assessed, and then a method of statically securing the object is proposed
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Risk Asessment of Construction and Demolition Waste
Repka, Matej ; Láník, Jaromír (referee) ; Hrabová, Kristýna (advisor)
Master’s thesis deals with the assessment of risks associated with construction and demolition waste. These are risks mainly related to environmental protection, safety and health protection of workers handling construction waste on the construction site, as well as technical aspects of the use of recyclates. The tools selected for this thesis to identify and analyse the risks are cause and effect analysis (Ishikawa diagram) and bow-tie type analysis. For the assessment of the identified risks, the methods selected are the risk matrix and then the Failure Mode and Effect Analysis (FMEA), which also deals with the design of measures for each problem, which aim to minimize the probability of occurrence and impact of the identified risks. Thus, the aim of the thesis is to identify, assess and analyse the risks and determine simple measures to eliminate or mitigate them.
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