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Original title in Czech: Konstrukce a dopravní stavbyFASTAbbreviation: KDSAcad. year: 2019/2020
Programme: Civil Engineering
Length of Study: 4 years
Accredited from: 25.7.2007Accredited until: 31.12.2020
Profile
PhD study of Constructions and Traffic Structures study branch is focused on a scientific training, methodology of research work and research development in the fields of structural theory, reliability and failure mechanism of structures. There are several study directions - structural mechanics, concrete and masonry structures, steel, timber and composite structures, geotechnics, railway structures, roads structures, experimental work and building testing. Scientific preparation is based on knowledge of theoretical disciplines of natural sciences base together with theoretical and scientific disciplines of water management orientation. Graduate of PhD study is ready to work in research and development, using creative approach for problems solving of progressive structures including traffic structures. Continuous active scientific and pedagogical activity is a good condition for eventual qualification of graduates as academic employees at Universities.
Guarantor
prof. Ing. Marcela Karmazínová, CSc.
Issued topics of Doctoral Study Program
The aim of this thesis is the advancement of current state-of-the-art in numerical methods, including simulation techniques, to increase efficiency in the assessment of structures and infrastructure. Results of this thesis will serve as a theoretical basis for the revision of current analytical approaches.
Tutor: Podroužek Jan, doc. Dr.techn. Ing.
The student will deal with selected aspects of advanced assessment of safety, reliability and durability of structures.
Tutor: Lehký David, prof. Ing., Ph.D.
As the asphalt binder is an organic compound, it undergoes an aging process during storage, production of the asphalt mixture and road use. In this aging process, the properties of the asphalt binder and the properties of the asphalt mixture produced therefrom change. In the dissertation, attention will be paid to the aging process of asphalt mixtures.
Tutor: Hýzl Petr, doc. Ing., Ph.D.
The aim of the work is an analysis of long-term behavior of concrete structures (bridges, buildings, tanks, etc.). Specification of methods for monitoring, specification of statical calculations , comparison of measured and calculated values.
Tutor: Zich Miloš, doc. Ing., Ph.D.
The basic description of test material or construction is the measurement. The important part is the correct evaluation of the obtained data. When evaluating large volumes of data, it is also advisable to use less traditional methods. Measurements may contain long time data. The basic description takes place in the time domain of the band. Important information can also be obtained in the frequency or time-frequency domain. The aim is to process some procedures in Matlab and/or VBA Excel.
Tutor: Pazdera Luboš, prof. Ing., CSc.
This thesis topic focuses on a complex analysis of the influence of the internal structure of selected composites, specifically regarding their mechanical fracture properties. In order to achieve this aims, the thesis will contain a numerical analysis of particle models together with implementation on specific small-grain size composites (for example technical refractory ceramics). There will be cooperation with the Institute of Building Testing and private sector, and support of these supervisor-specialists: 1) doc. Ing. Petr Frantík, Ph.D. and 2) doc. Ing. Pavel Schmid, Ph.D.
Tutor: Keršner Zbyněk, prof. Ing., CSc.
The landslide on D8 at Dobkovičky (56,300 – 56,500 km) which took place on June 7, 2013 destroyed the newly built motorway and caused great material and financial damage. Doctoral dissertation will be focused on complex assessment of the geotechnical, geological and hydrogeological factors that led to the initiation of the landslide. The dissertation will follow up and extends the studies already carried out on this socially relevant topic.
Tutor: Krmíček Lukáš, prof. RNDr., Ph.D.
The topic is focused on quantification of concrete sustainability with regard to concrete resistance to degradation. The aim is to develop a suitable methodology that can facilitate decision-making on the design and selection of a mix for the production of concrete from a broader perspective, ie not only in terms of bearing capacity or durability.
Tutor: Vymazal Tomáš, doc. Ing., Ph.D.
Appropriate structural design from advanced building materials (including 3D printing materials) or rocks is conditioned by the ability of prediction of real response obtained by robust computational tools with implementation of proper failure models based on non-linear fracture mechanics.
The topic is focused on designing of railway stations regarding current operating needs, including involvement in integrated transport systems and increased demands for safety, traffic and interoperability of the railway system.
Tutor: Svoboda Richard, Ing., Ph.D.
Definition of optimisation model of a structure for: 1. design of a member, 2. strengthening of existing member, 3. design and strengthening of a structure. Calculation variant: stochastic, deterministic (according to the application class of the tasks), type of the restraining conditions, classes the target functions.
Tutor: Štěpánek Petr, prof. RNDr. Ing., CSc., dr. h. c.
The theme includes the development and application of new procedures in the issue of experimental analysis of engineering (railway) construction. It is expected focus on advanced mathematical techniques from the field of time and frequency domain in conjunction with the methods of artificial intelligence.
Tutor: Smutný Jaroslav, prof. Ing., Dr.
With respect to the changing textural and structural characteristics of the rock massifs, it is highly probable that the development of the strength properties will be variable both vertically and horizontally. Suggested doctoral dissertation will be focused on investigation of the spatial variability of the triaxial compressive strength based on the testing of series of cores specimens from the selected massif.
The dissertation is focused on development of simulation techniques for representation of physical processes in heterogeneous materials. The models are to be focused preferably on materials with irregular inner structure and at the same time, those that are relevant for civil engineering (concrete and similar composites). The processes to be modeled are fracture, transport phenomena and fatigue.
Tutor: Vořechovský Miroslav, prof. Ing., Ph.D.
Taking into account the nonlinear behavior of structures in the solution of response to sesmic excitation.
Tutor: Salajka Vlastislav, doc. Ing., CSc.
The doctoral thesis is focused for analysis of dynamic wind loads subjected to slender structures, especially using computational fluid dynamics method.
Tutor: Hradil Petr, doc. Ing., Ph.D.
The work is focused on the experimental investigation of stress-strain behaviour of the binders, mortars and concretes during their solidification. The main objective is to identify the external and internal factors and their influence on the resulting stress and strain values. The experimental data will be used for the numerical analysis performed in conjuction with the Department of structural mechanics. The assessment of the significance of the investigated factors will be performed for materials intended to load-bearing structures.
Tutor: Kucharczyková Barbara, doc. Ing., Ph.D.
The work will be focused on the coherent research of nonlinear fracture behaviour of composites based on alkali activated matrix. Their mechanical fracture properties, including experiments based on cyclic loading, will be studied in detail. The obtained experimental results will be used as input parameters of nonlinear fracture models, which simulate the cohesive character of failure propagation through quasi-brittle material, used to predict the real response of the specimen/structure.
Tutor: Šimonová Hana, doc. Ing., Ph.D.
The methodology of quantification of time-dependent analysis of failure probability of bearing steel girders will be developed. Theoretically based numerical instruments will be developed for the behaviour simulation of elements of these structures which are prone to formation of fatigue failure. The efficient stochastic approaches, enabling to study the influences of parameters under uncertainties on model responses of steel structures in time will be analyzed.
Tutor: Kala Zdeněk, prof. Ing., Ph.D.
The ability of concrete to repair its small cracks autonomously is called as self-healing. The main aim will be to quantify the self-curing effect based on fatigue and fracture-mechanical tests. The beams will be exposed to cyclic loading. From this a traditional S-N curve will be evaluated for each stress level. To quantify self-healing/curing effect and it influence on the residual fatigue life the tested specimen will scanned by CT tomography.
Tutor: Seitl Stanislav, doc. Ing., Ph.D.
Numerical and analytical modeling of fatigue in concerete and reinforced concrete
The use of stainless steel for bridge structures is relatively recent. Significant advances in the use of stainless steel in known. The degradation of properties and lifetime assessment of steel subjected to complex mechanical loading will be investigated. Experimental part of the proposal, evaluation of the input data for finite element software ANSYS i.e. a) S-N curve – smooth or with defined singular concentrator/notch, b) specimen with crack, threshold values, Paris’ law, stress ratios etc.
Reinforcing of concrete and masonry structures, internal FRP reinforcement, selected design problems, prestressed and non-prestressed variant.
The reliability and limit states of bearing steel structures will be analyzed using stochastic computing models focused on sensitivity, statistical and probability analysis. Numerical models on computer will be created with basic knowledge of structural mechanics and theory of elasticity and plasticity. Interest or basic knowledge of Delphi or other programming language will be very welcome.
Packing problem for aggregate particles of different size is unsolvable using analytical methods. Optimization by stochastic simulation should be examined.
Tutor: Holcner Petr, doc. Ing., Ph.D.
The thesis deals with the influence of multiple cyclic loading on the strength and deformation properties of concrete. A number of experimental works and laboratory analyses will be carried out to describe the changes in the compressive strength and elastic modulus of concrete under multiple cyclic loading. This loading regime will be based on the test of the static modulus of elasticity of the concrete and will be performed in both the elastic and plastic stages of the stress-strain diagram.
Tutor: Kocáb Dalibor, Ing., Ph.D.
Theoretical analysis and experimental verification of the actual behaviour of steel-concrete / timber-concrete structural members / parts accenting the utilization of advanced materials, technologies and structural detailing will be focused in particular on increasing their reliability and efficiency.
Tutor: Karmazínová Marcela, prof. Ing., CSc.
The dissertation is focused on the problems of the real behaviour and the design methods of load-bearing wood-based structural members and parts.
Tutor: Šmak Milan, doc. Ing., Ph.D.
The theme is focused on the study of mechanics of railway structures. The theme includes static and dynamic analyses of the track with the special aim in high speed lines, modern elements of track and interoperability of railway infrastructure. Particular topics: - analytical and numerical methods for track analyses in the time and frequency domain
Tutor: Plášek Otto, doc. Ing., Ph.D.
The aim of the topic is to create a methodology for testing masonry elements and brickwork in the restoration of monuments. A major problem concerns in particular the replacement of damaged or missing masonry so that the resulting construction meets the requirements in terms of mechanical stability and load-bearing capacity, as well as durability. The topic is linked to the research project of the Ministry of Culture of the Czech Republic NAKI II.
Tutor: Cikrle Petr, doc. Ing., Ph.D.
When using a higher amount of reclaimed asphalt in an asphalt mixture, it is sometimes necessary to rejuvenate the aged asphalt binder. It is possible to use a softer binder, rejuvenating agents or RC bitumens. The dissertation thesis will be focused on the evaluation of the influence of softer binders and rejuvenating additives on the properties of an asphalt mixture containing a high amount of reclaimed asphalt. Changes in the properties of the mixture affected by the aging will be evaluated.
Tutor: Dašek Ondřej, doc. Ing., Ph.D.
Load effect on pavemenent construction is computed according to standard TP170 "with use of a suitable program" based on "the multilayer elastic system model". Existing programs are verified empirically and the results are used in the pavement catalog. New computer program with an open source code is needed for the computational procedure. Furthermore, it is desirable to analyze different possible methods reflecting viscoelastic properties and rheological behavior of the binder used.
The study is focused on monitoring the measurement of bearing capacity of base layers in the road laboratory and in-situ. Long-term measurement and comparison of strength characteristics according to laboratory methods and new equipment used to check the degree of compaction of pavement layers will allow to refine and improve the assessment of optimal design and construction of pavement layers. The aim of this work is to optimize the design parameters of the underlying road layers, to monitor the quality of the road layers more precisely.
Tutor: Stehlík Dušan, doc. Ing., Ph.D.
Development of simulation and appximation methods for numerical analyses of problems featuring random variables. The bottom line is the development of advanced Monte Carlo strategies.
Determination of vehicle trajectory in dependence on geometrical parameters of crossings, roundabouts and retarders. Algortithms for track and envelope curves under boundary conditions.
The doctoral dissertation is focused on the utilization of nonlinear material models for analyzing structures from reinforced concrete or masonry. The goal of the thesis is the parameter identification of different material models. Material models developed for the rapid dynamic process will be observed.
Application of modern simulation tools to analyze the movement of persons and their evacuation in the critical transport infrastructure in order to optimize their design and the soft targets protection. Vývoj nástrojů a metod pro identifikaci a hodnocení měkkých cílů v dopravě s využitím numerických modelů.
Tutor: Apeltauer Tomáš, doc. Mgr., Ph.D.
The study is focused on monitoring the stress and deformation characteristics of road construction in a full-scale road model. The long-term measurement of the deformation characteristics under the dynamic pulse load simulating the traffic load will predict the fatigue characteristics of the pavement layers. The aim of the thesis is to refine the design parameters, to monitor the connection of the pavement layers and to verify the use of recycled building materials in the pavement layers.
Both organic and anorganic fibres from waste raw materials can be used purposefully in construction fibre concretes with extracted aggregate and concrete recyclate. The comparison of physical-mechanical and durability characteristics of fibre concretes with and without loading can contribute to estimating lifetime and ductility behaviour of fibre concretes of different formulations.
Tutor: Stehlík Michal, doc. Ing., Ph.D.
In the Czech Republic is recycled annually 100 000 tons of glass waste. By crushing and cleaning of waste is created glass recyclate in a different factions. One of the potential application is the substitution of the coarse aggregate of concrete by glass recyclate. The results of a number of mechanical and physico-chemical tests without and after application of load shall decide on the use of concretes with the glass recyclate and shall help with the assessment of efficiency of production.
The aim of the work is the development and verification of prefabricated concrete structures of residential buildings that take into account the architectural, ecological and cultural requirements in a frame of possible economical resources. Static analysis of panel joints will be carried out, design of suitable panel arrangement, etc.
Design of the progressive diagnostic system for assessing the effectiveness of maintenance work and for monitoring of dynamic effects in turnout during its life cycle will be the main output. The theme also includes the creation of a "smart" system for the collection of basic data and a set of appropriate algorithms, which allows information acquisition of the status of turnouts and their components in real time, to transmit and to store them for subsequent use for the needs of manufacturers, public administration, project management, research etc.
Random spatial fluctuation of material and geometrical parameters of structures modeled by random fields in computational models.
modern methods of strengthening, prestressing, additional reinforcement
The theme is focused on finding appropriate structures urban tracks with regard to improving traffic load and reducing the negative impacts of urban tracks to the track vicinity, reduce the cost of construction and maintenance work and traffic restriction.
Modern structures are in many cases supported or suspended on cables. In this way they creates economical structural systems. However, they require a non-linear analysis. The subject of the work is a design and analysis of the structure of this type.
Tutor: Stráský Jiří, prof. Ing., DSc.
Monitoring changes of the historic brickwork properties by using traditional and non-traditional methods can contribute to the understanding of historical development in this field. Application the Matlab program to evaluate the results.
The topic is focused on research of technology procedures and corrective maintenance that lead to minimization of the traffic restriction, energy consumption, environmental impact and life cycle costs.
Analysis of the static and dynamic behavior of the railway superstructure on the effects of the railway vehicle through modern computational programs.
Theoretical and experimental analysis of an efficient design in case of composite steel-concrete members and structures with the possibility of an optimal utilization of high-strength materials - using HSS and HPC, especially with respect to geometric and material characteristics as well as to various types of loading.
Tutor: Štrba Michal, Ing., Ph.D.
Currently, the environmental approach is emphasized in the field of civil engineering. The decreasing amount of natural resources brings demand for finding sustainable resources for concrete production. Over the last few decades, a lot of researches has been done on the use of recycled aggregates for concrete production. Recent research focused on the reduction of CO2 emissions shows that the use of recycled aggregates is one of the ways how to increase the sustainability of concrete structures.
The theme is focused on study of dynamic behaviour of railway lines. The theme includes railway superstructure and railway subbase. Topic involves experiment and simulation techniques. The tema also includes application of a suitable modern mathematical apparatus for the evaluation of the railway lines parameters including of artificial intelligence methods using.
Problems concerning the reliability, modelling, optimalisation and verification of the behaviour of construction members, elements and structural systems combined from concrete and steel are solved. Emphasis is placed on the assessment of real geometrical, material and construction characteristics.
Tutor: Bajer Miroslav, prof. Ing., CSc.
The subject of the dissertation thesis is to update the selected elements from the Czech standards ČSN 73 6110 and ČSN 73 6001 following the revision/creation of these standards.
Tutor: Radimský Michal, Ing., Ph.D.
For inspection and diagnostics of reinforced concrete structures it is very important to objectively determine their condition. It is here that non-destructive methods find their use, as they can detect weak points in the load-bearing structure without causing damage to it. The most suitable methods for inspection and diagnostics are: ultrasonic transmission, ultrasonic pulse echo, georadar method and electromagnetic reinforcement indicators.
Theoretical and experimental analysis and efficient design in case of composite steel-concrete members and structures with the possibility of an optimal utilization of high-strength materials - using HSS and HPC, especially with respect to geometric and material characteristics as well as to various types of loading.
Student will create discrete model for coupled meachanical and transport problem for concrete. requirements: solid mathematical basis, ability to write/learn computer code (C++, Python)
Tutor: Eliáš Jan, prof. Ing., Ph.D.
Tutor: Barnat Jan, doc. Ing., Ph.D.
The Czech deep repository development programme resulted in identification of several localities with favourable geological conditions. The Czech concept of a deep repository construction targets on crystalline host rocks. The dissertation will be focused on fracture mechanics of geomaterials from the most favoured localities – Horka near Velké Meziříčí and Kraví hora near Dolní Rožínka.
The dissertation will be focused on determination of the failure mechanisms (sliding, shearing) of selected geomaterials during uniaxial and triaxial compression tests. The fracturing will be monitored by ultrasonic sounding and acoustic emission.
The reliability and limit states of bearing steel structures will be studied using stochastic computing models focused on sensitivity, statistical and probability analysis. Stochastic models will be created with the knowledge of numerical simulation methods, FEM nonlinear models, models of structural mechanics, theory of elasticity and plasticity, and other related disciplines necessary for stochastic modeling and computing.
The growing global construction activities urge to find sustainable resources to replace natural materials for the production of concrete. In the past few decades, many researches have been carried out on the use of recycled aggregate (RA) derived from construction and demolition wastes to produce concrete products. Recent research on reducing CO2 emissions or directly processing CO2 shows that it can significantly increase the performance of RC and the durability / sustainability of concrete.
The aim is to develop the methodology of quantification of time-dependent analysis of the failure probability of elements of bearing steel structures. Theoretically based numerical instruments will be developed for the behaviour simulation of elements of these structures which are prone to formation of fatigue failure. The efficient stochastic approaches, enabling to study the influences of parameters under uncertainties on model responses of steel structures in time will be studied.
The dissertation is focused on the issues of the real behaviour and the design methods of load-bearing wood-based structural members and parts.
The theme is focused on the study of mechanics of railway structures. The theme includes static and dynamic analyses of the track with the special aim in speed increasing, modern elements of track and interoperability of railway infrastructure. Particular topics: - analytical and numerical methods for track analyses in the time and frequency domain - track-bridge interaction - continuous welded rail in curves of small radii - switches&crossings of a new generation
The theme is focused on the study of mechanics of railway structures. The theme includes static and dynamic analyses of the track with the special aim in speed increasing, modern elements of track and interoperability of railway infrastructure. Particular topics: - analytical and numerical methods for track analyses in the time and frequency domain
The subject of the doctoral thesis is laboratory testing of soils, in which the improvement of properties is achieved by dispersed geosynthetic reinforcement. The aim is to obtain information on shear strength, stiffness and also the erosion resistance of this composite. To accomplish this goal, the main method of examining laboratory testing will be.
Tutor: Miča Lumír, doc. Ing., Ph.D.
The correct size distribution of pores within 100–300 µm (i.e. spacing factor) in air-entrained concrete depends on many factors and is not automatically guaranteed. The most common way to evaluate the spacing factor based on the 1D Powers’ model appears obsolete today. The thesis deals with expanding the existing advanced possibilities of evaluating pore size distribution in concrete, which are mainly 2D pixel and 3D voxel analyses.
Engineering structures subjected to loading may result in stresses exceeding the material strength and thus forcing the progressive damage. Computational modelling of quasi-brittle damage of a wide class of building materials and composites can be done using some nonlocal integral approaches. The student will pay attention to the verification and validation of available models and their potential improvements.
Tutor: Vala Jiří, prof. Ing., CSc.
The thesis is focused on the determination of permeability of geomaterials. Attention should be focused on: methods for determining permeability and evaluation of tests, factors influencing the permeability of geomaterials, evaluation of individual methods/factors, laboratory testing of permeability of selected geomaterials, summary and analysis of obtained and published results.
Tutor: Boštík Jiří, Ing., Ph.D.
As geocomposites can be considered any geomaterials that are composed of petrographically, texturally and structurally different parts or zones. Suggested doctoral dissertation will be focused on investigation of the physico-mechanical properties (e.g., scleroscopic hardness, uniaxial and triaxial strength, indirect tensile strengths) of composite geomaterials.
Topic is focused on nonlinear modelling of concrete structures (e.g. bridges) taking into account uncertainties in material, load and environment.
Tutor: Novák Drahomír, prof. Ing., DrSc.
The theme of Ph.D. thesis is focused on the theoretical and experimental analysis of the limit states and actual behaviour of load-carrying members and components of steel structures. The analysis will be arised from the numerical modelling, which will be verified by the experiments.
Tutor: Pilgr Milan, Ing., Ph.D.
The subject of the dissertation thesis is to update the selected elements from the Czech standards ČSN 73 6102 a ČSN 73 6110 following the revision of these standards.