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Possibilities of using GPR in diagnostics of bridges
Moravská, Veronika ; Vítek, Lubomír (referee) ; Anton, Ondřej (advisor)
This bachelor thesis deals with the diagnostic survey of reinforced concrete bridges using GPR. In the first part of the GPR specified nomenclature, physical concepts. The next chapter deals with methods of diagnosis, which are used to locate reinforcement. The next section describes the basic types of bridges, bridge terminology and reinforcement of the main body. The practical part describes the diagnostic surveys of existing bridges.
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Survey and Evaluation of Reinforced Concrete Structure
Ježíková, Pavlína ; Anton, Ondřej (referee) ; Cikrle, Petr (advisor)
This diploma thesis focuses on the construction survey of the building where the University Cinema Scala and the Bolek Polívka theatre is located. The building will celebrate its 100th birthday in 2028 and its author is the builder Jaroslav Josef Polívka. The survey concerns reinforced frame constructions. The compressive strength of concrete cores and type of reinforcement was determined and non-destructive and destructive diagnostic tests were used. The first aim of the survey was to collect materials for a static report due to the planned superstructure but a visual inspection of the construction was performed and serious failures were found. For these reasons, the closure of the building was necessary. Last part of the thesis is the design of the reinforcement, if the same structure was designed according to the currently valid Eurocodes, but with the use of original materials; as well as a comparison of the designed reinforcement with the actual reinforcement.
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Application of GPR method for detection of structural failures
Křepelka, Jan ; Láník, Jaromír (referee) ; Cikrle, Petr (advisor)
This Bachelor thesis deals with the non-destructive testing, which enable researches of failures in concrete inner structure. In the theoretical part of the thesis, selected methods are described based on their principles. Specific possibilities of use, abilities and limits are based on the method’s principle. In the practical part, the thesis focuses on Ground Penetrating Radar with the usage of a new multi-frequency scanning technology. The measurements took place with commonly used Ground Penetrating Radar Hilti PS 1000 X Scan and also with newly available Ground Penetrating Radar Proceq GPR Live. Not only the measurement results of model solids were compared, but also of real bridge construction.
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Survey and Diagnostics of Building Construction
Resl, Jaroslav ; Cikrle, Petr (referee) ; Anton, Ondřej (advisor)
The thesis is focused on the overview of the diagnostic methods for engineering surveys reinforced concrete constructions. The practical part explains engineering surveys of industrial building, evaluation of concrete strength on existing building and results from search reinforcements on individual elements. Next part is focused on load testing precast floor slab removed from construction and evaluation load capacity. The last part include structural design of elected parts (precast floor slab and beam).
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Design of Archaeological Detector
Šimková, Hana ; Tauber, Jiří (referee) ; Rajlich, Jan (advisor)
The theme of this bachelor thesis is a design of archaeological detector. The main goal is to design a compact device that meets all the ergonomic and technical requirements, while offering an innovative approach to the final shape. The resulting device stems from analysing the products on current market and determining their problems. The main benefit of this thesis is an original approach to the shaping, that allows a new way of using the detector.
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Preparation and implementation of construction and technical survey of a building
Šebela, Václav ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
This bachelors thesis covers preparation and implementation of a construction and technical survey of reinforced concrete structure in Rousínov. The theoretical part is describing examined properties of reinforced concrete and methods of diagnostics used in this field of study. The practical part focuses on the construction and technical survey. The main focus of the survey is the quality of concrete and the assessment of reinforcement in representative parts of the structure. The last part concludes results of the survey.
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Preparation and implementation of construction and technical survey of prestressed bridge structure
Kubová, Klaudie ; Sedláček, Ondřej (referee) ; Anton, Ondřej (advisor)
The bachelor's thesis deals with the technical survey of the load-bearing structure of the left part of prestressed motorway bridge D2-058..2. The bridge is located on the border between the Czechia and Slovakia, and it was built in 1980. The work is focused on locating the prestressing reinforcement of prefabricated beams and determining its condition. The theoretical part describes the principle of static action of reinforced and prestressed concrete, categorization of technical surveys of structures and diagnostic methods. The work also presents specific diagnostic methods for determining the position and condition of prestressing reinforcement. In the practical part, the work deals with the analysis of beams by means of ground penetrating radar and probes for analysis of the condition of reinforcement. The outcome of the work is a study of the deviations of the position of prestressing cables from the original project documentation and determination of their condition in terms of corrosion degree and grouting.
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Using ground penetrating radar in geomorphology
Široký, Jakub ; Křížek, Marek (advisor) ; Engel, Zbyněk (referee)
Ground Penetrating Radar (GPR) is a non-invasive geophysical research method imaging subsurface structures. It expanded widely across geomorphologic investigation during last years because of its speed, low-cost, reliable and large-scale capability. GPR is especially useful in sedimentological studies. The thesis is focused on introducing the basics about the GPR method as it is not well-known in Czech geomorphologic scene. The physical background of the device and the electromagnetic waves is given. A research articles and books recherche helped in creating of a reflection summary amended with Czech terminology and graphic examples. The typical reflection answer of sedimentological features were documented and sorted according to the glacial, periglacial, fluvial, paleolake and slope geomorphologic environments. A sequence of steps for editing and interpreting a radargram was proposed and applied on three model radargrams.
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Application of GPR method for detection of structural failures
Křepelka, Jan ; Láník, Jaromír (referee) ; Cikrle, Petr (advisor)
This Bachelor thesis deals with the non-destructive testing, which enable researches of failures in concrete inner structure. In the theoretical part of the thesis, selected methods are described based on their principles. Specific possibilities of use, abilities and limits are based on the method’s principle. In the practical part, the thesis focuses on Ground Penetrating Radar with the usage of a new multi-frequency scanning technology. The measurements took place with commonly used Ground Penetrating Radar Hilti PS 1000 X Scan and also with newly available Ground Penetrating Radar Proceq GPR Live. Not only the measurement results of model solids were compared, but also of real bridge construction.
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