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Original title in Czech: Konstrukce a dopravní stavbyFASTAbbreviation: KDSAcad. year: 2016/2017
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 theme is focused on study of mechanics of railway structures. The theme includes static and dynamic analyses of track with special aim in speed increasing, modern elements of track and interoperability of ralway infrastructure.
Tutor: Plášek Otto, doc. Ing., Ph.D.
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: Apeltauer Tomáš, doc. Mgr., Ph.D.
To assess the influence of the interfacial transition zone (ITZ) between matrix and aggregate to toughening mechanisms of advanced building composites. Fracture processes connected with crack deflection, trapping, pinning and aggregates rupture will be studied. Properties of ITZ in concrete will be measured and used as input data for numerical simulations. To investigate the influence of geometry and aggregate-matrix materials’ mismatch on damage initiation and propagation in the composites.
Tutor: Keršner Zbyněk, prof. Ing., CSc.
Civil engineering materials consist from matrix and aggregates, for cheaper production and processing of ceramic waste, the part of aggregates can be replaced by ceramic waste. Description of fracture mechanical behaviour and preparation of proper numerical models base on linear or non-linear fracture mechanics will be central topic of Ph.D. thesis.
Tutor: Seitl Stanislav, doc. Ing., Ph.D.
Increased automobile and train transportation on orthotropic steel bridges led in recent years into a serious fatigue damage. This damage has to be repaired and renovation technique should be sustainable. Finite element software will be used for the investigation of stress reducing effect of concrete overlay on the steel deck plate and its vicinity.
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.
Majority of structural materials can be categorized, from the material failure point of view, as quasi-brittle or ductile. They are characteristic by formation and propagation of sizeable nonlinear zone in front of the tip of a defect that causes violation of their integrity. Capturing the nonlinear zone influence is the key to significant improvement in accuracy of the failure description. Nonlinear zone characterization will be conducted via advanced experiments (AE, X-ray) and simulations.
Tutor: Veselý Václav, doc. Ing., Ph.D.
Pre-stressed reinforced concrete railway sleepers are among the most massively produced and used structural members. Their failure under different loadings concerning both boundary conditions (laboratory tests under three-point bending - quality-controlling tests, when placed in the railway superstructure) and type of the loading (static, dynamics, fatigue). Attention will be paid to detailed modelling of failure in selected parts of the sleeper. The work will contain also related experiments.
Topic deals with the study of problems of concrete cover layers durability and contribute to development of the knowledge in the eld of durability assessment and evaluation. The first output is to generate the relationships between quality classications determined by non-standardized and standardized testing methods. The second output of this project is to develop a recommendation for the uniform classication of the concrete cover layers determined by dierent testing method.
Tutor: Vymazal Tomáš, doc. Ing., Ph.D.
The work develops the issues in the Czech Republic eg published in the journal TKS Beton, 6/2013 with the name of the proposed focus on life: the implementation of the principles and standards of ISO 13823 General principles on the design of structures for durability.
The aim of the study will be behaviour monitoring of a type of samples at three or four points bending test. One of the Non-Destructive Testing method, in this case, Acoustic Emission Method is suitable for monitoring the sample cracks during its loading. The Ph.D. student will acquire knowledge about Testing methods.
Tutor: Pazdera Luboš, prof. Ing., CSc.
The theme 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 concept of designing and realization of additional static reinforcements of existing structures. Summary and research of valid standards and norms concerning designing structures in aspects of regarded topic. Diagnosis methods specification and existing structure assessment for purpose of static calculations optimization and reinforcement design. Evaluation of experimental methods effectivity and assessment of applied technology.
Tutor: Schmid Pavel, doc. Ing., Ph.D.
Determination of vehicle trajectory in dependence on geometrical parameters of crossings, roundabouts and retarders. Algortithms for track and envelope curves under boundary conditions.
Tutor: Holcner Petr, doc. Ing., Ph.D.
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.
The rapid development of the electronics and the use of new materials leads to the development of new, compact sources of ionizing radiation and new means for recording a radiographic image. The aim is to find new suitable radiography applications in the exploration of building structures.
Tutor: Hobst Leonard, prof. Ing., CSc.
Localization of reinforcement in concrete structures are the essential tasks of diagnosis. Recently, there were significant innovations in instrumentation. To increase the effectiveness of the method is, however, necessary to perform research with a number of comparison measurements both in laboratory models as well as directly on the structure. The aim of the research is to optimize the methodology for locating reinforcement to refine static calculations of existing concrete structures.
Tutor: Cikrle Petr, doc. Ing., Ph.D.
Localization of reinforcement in concrete structures are the essential tasks of diagnosis. Recently, there were significant innovations in GPR technology. The aim of the research is to optimize the methodology for locating reinforcement to refine static calculations of existing concrete structures.
Tutor: Anton Ondřej, doc. Ing., Ph.D.
The search for new approaches to solving response of structures to dynamic loads. Application of algorithms to compile the new equation solvers.
Tutor: Salajka Vlastislav, doc. Ing., CSc.
Methodology for the assessment of structures, design and assessment of details that resist seismic loading.
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 measurement of volume changes (shrinkage / swelling), in cement and cement-free composite materials. The main objective is to identify the external and internal factors and their influence on the resulting shrinkage/swelling values of particular materials. The assessment of the significance of the investigated factors will be performed for materials intended to load-bearing structures.
The primary goal is to estimate the relationship of dependency compressive strength and modulus on the porosity of the selected structural concrete through verification and discussions already published mathematical models for estimating the relationship of dependency compressive strength and modulus on the porosity of the concrete.
The work will be focused on comparison of performance and stability of methods and possibilities of their improvement. Special attention will be devoted to investigation of origin of instabilities during calculation in the explicit method and possibilities of avoiding the instabilities will be studied.
Tutor: Němec Ivan, doc. Ing., CSc.
Knowledge about behaviour of building materials based structures through the effective application of methods of complex determining of physical-mechanical and performance qualities to describe fatigue and fracture characteristics
Theme of Dissertation Thesis is aimed at verification, validation and development of numerical models appropriate for heat transfer with phase changes in heterogeneous building materials and constructions. These numerical models are necessary for design of advanced building constructions as well as for evaluation of fire safety in Civil Engineering.
Thesis deals with influence of multiple cyclic loading on deformational characteristics of hardened concrete. A series of laboratory analyses for description of changes of static modulus of elasticity of hardened concrete under multiple cyclic loading will be made within the thesis. The loading will be performed in the elastic and plastic part of deformation diagram.
Theoretical and experimental analysis of the resistance of steel-concrete and timber-concrete composite components with improved properties (material, static properties, economy) will be oriented on the increase of their reliability using advanced materials and technologies. The actual behaviour will be investigated with applying experimental methods. The theoretical solution will be based on analytical procedures and numerical modelling, which will be verified by the experimental analysis.
Tutor: Karmazínová Marcela, prof. Ing., CSc.
The topic is focused on solving inverse problems and optimization for the design and reliability and lifetime assessment of structures. For solution stochastic and soft-computing methods will be utilized. Main attention will be focused on the methods and procedures applicable in combination with a non-linear FEM analyses of bridge structures.
Tutor: Lehký David, prof. Ing., Ph.D.
In recent years, the expansion of requests to the owners or administrators of roads to create a street space dedicated to cyclist. These requirements are often unsystematic and generate capacity and safety problems. Resulting methodology should introduce traffic engineering calculation procedure that will be able to answer the question if there is a possible and beneficial to create a cycle path in the given street space.
Tutor: Radimský Michal, 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 result of this thesis is efficiency increase in the design of structures and buildings by using Building Information Modeling, which is the entry element of advanced simulations and analysis. The results of this thesis will be used to optimize application of BIM technology in a local environment, which is currently being implemented on a European scale and thus existing procedures in the design of building constructions in building industry are being replaced.
The doctoral dissertation is focused on the utilization of nonlinear material models for analysing structures from reinforced concrete or masonry. The goal of the thesis is parameter identification of different material models. Material models developed for rapid dynamic process will be observed.
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 the physico-mechanical properties of crystalline rocks (rebound hardness, uniaxial and triaxial compressive strength) from the most favoured localities – Horka near Velké Meziříčí and Kraví hora near Dolní Rožínka.
Tutor: Horák Vladislav, doc. Ing., CSc.
The rocks of the teschenite association covering the area from Hranice na Moravě to Poland, involve a series of structurally different types with variable content of rock-forming mafic minerals. These rocks are used for both foundation engineering and for the production of crushed stone. The dissertation will be focused on assessment of the physico-mechanical properties (rebound hardness, uniaxial and triaxial compressive strength) connected with individual types of teschenite association.
Design of new types of the prestressed bridge slabs and substitution of existing bridge slabs prepared using precast girders.
Tutor: Klusáček Ladislav, doc. Ing., CSc.
The aim of the work is development and verification of prestressed concrete tanks for fuel that take into consideration the architectural, ecological and safety requirements in a frame of possible economical resources.
reinforcing of concrete structures, internal FRP reinforcement, selected design Problems, prestressed and non-prestressed variant;
Analysis of driven underground structures behaviour - influence of selected factors. It is supposed to application of mathematical modelling for analysis these factors.
Tutor: Boštík Jiří, Ing., Ph.D.
Strips, fabrics; contact of glued joints; strengthening in shear/flexure; NSMR (near surface mounted reinforcement), prestressed and non-prestressed variant; strengthening by external prestressing; strengthening of compressive stressed members using wrapping.
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.
The theme 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.
Acoustic Emission Method is an unusual technique which describes only active defects or changes into structure arising as a consequence dangerous tension into structure. The method is appropriate to be used in homogenous structures as metal structures when cracks are highly active (generates sound). Its application in civil engineering is not so much used because building structures are inhomogeneous.
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.
Fracture of quasi-brittle materials is the main scope of the research. Crack propagation is studied from the perspective of current approaches to fracture modelling - analytical models and numerical simulations - and experiments. Attention is paid to the role of nonlinear zone evolving in front of the propagating crack in the fracture description. Effects of size, geometry and free boundaries of the body are studied in context with the existence of this zone.
Problems concerning the reliability, modelling, optimalisation and verification of the behaviour of construction members, elements and bearing systems made of steel are solved. Emphasis is placed on the assessment of real geometrical, material and construction characteristics.
Tutor: Bajer Miroslav, prof. Ing., CSc.
Both in real and simulated traffic flow state changes occur which are assumed to cause vehicle behavior changes. Simulation algorithms are not able to reflect this. It is necessary to study the traffic flow in the phase transitions conditions.
Tutor: Kudrna Jan, prof. Ing., CSc.
Structures supported by cables enables a design of aesthetic and cost effective bridges. It is therefore appropriate to develop them further. It is necessary to determine the extent of their economic applications, specify their design problems with respect to their ultimate load capacity, serviceability, dynamic response, stability of compressed members and fatigue of tension members.
Tutor: Stráský Jiří, prof. Ing., DSc.
Appropriate structural design from advanced building materials 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 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.
Theoretical and experimental analysis of the resistance of steel-concrete structural members and components with improved properties (material, static properties, economic parameters) will be oriented on the increase of their reliability using advanced materials and technologies. The actual behaviour will be investigated with applying experimental methods. The theoretical solution will be based on analytical procedures and numerical modelling, which will be verified by the experimental analysis.
Operation and calibration of a modern two-channel ultrasonic pulse apparatus. Excitation with ultrasonic probes and oscilloscopic evaluation with the possibility of checking the process. Testing the suitability of other excitation possibilities enabling two-channel imaging. Refinement of results in problematic cases of measurement. Possibility of increasing the scope of the method. Extending the application of the method by separating the measurement base from the excitation point.
Tutor: Stehlík Michal, doc. Ing., Ph.D.
Verify and evaluate the possibilities of expanding contemporary methods of assessing the durability of air-entrained concretes by means of advanced and non-standard methods with focus on the determination of the amount and size distribution of pores in relation to freeze-thaw resistance.
The main goal of the dissertation is to analyze permeability and diffussion characteristics of fibre concretes with selected types and doses of fibres. The testing will be carried out on both loaded and unloaded samples with cracks made by bend loadind. The main output will be the proposal of formulations and estimation of durability of different types of fibre concretes especially loaded to achieve higher durability of reinforced concrete constructions.
The addition of different types of fibres to various formulations of concretes stops the creation of microcracks in hydration time, and later, under loading, improves ductility behaviour of concrete after the creation of bend crack. The innovated method of acoustic emission can be used to study the dependence of crack creation – decrease of loadability – deformation of loaded fibre concretes of different formulations exposed in advance to the action of limiting environmental conditions.