Roman Fojtík
Technical University of Ostrava
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Publication
Featured researches published by Roman Fojtík.
Key Engineering Materials | 2013
Radim Čajka; Kamil Burkovič; Vojtech Buchta; Roman Fojtík
State of stress in foundation structure is structure is significantly influenced by the contact stress course in the subsoil. At the Faculty of Civil Engineering VSB TU Ostrava testing device was constructed so that the phenomena could be experimentally investigated and compared with numerical models. The objective of this paper is also improving and developing the soil-structure interaction analysis based on the experimental results and finite element method (FEM).
Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series | 2014
Radim Čajka; Pavlína Matečková; Roman Fojtík
Abstract In case of expected horizontal deformation of subsoil or foundation structure it is possible to use rheological asphalt sliding joint to eliminate internal forces caused with friction. Material characteristics of asphalt are temperature sensitive. In science literature it is possible to find data with temperatures expected in footing bottom, however it was decided to complement this information with temperatures measured in-situ in foundation slab for super-computer building in campus of VŠB-Technical University of Ostrava. In the paper measured and calculated temperatures are compared for the first days after concreting the foundation structure. Besides the temperature of environment also significant influence of heat of cement hydration are taken into account.
Applied Mechanics and Materials | 2015
Iveta Skotnicova; Nada Zdrazilova; Roman Fojtík; Pavel Oravec
The article deals with dynamic and acoustic characteristics of the temporary steel bridge structures. Their construction is usually associated with the need of temporary replacement of the permanent bridge structures which were damaged or completely destroyed due to natural disasters or by human forces during the military operations or terrorist attacks. If some area is affected such this disaster, it usually gets into the difficult economic situation and it is not possible to recover the permanent construction in real time. In many cases there arises a situation that the temporary structure performs its function for years or permanently. In view of this fact, it is necessary to solve a number of defects, especially with regard to the long-term dynamic stresses in the structure and to excessive noise, which arises due to the traffic, because this structure is not primarily designed for it.
Applied Mechanics and Materials | 2015
Vojtech Buchta; Jan Hurta; Roman Fojtík
In civil engineering we solve problems with interaction between the foundation base and the subsoil often. For the determination of stress in foundation structure is needed to determine the influence of the stiffness respectively pliability of subsoil to structural internal forces, and vice versa, how the stiffness of the foundation structure affects the resulting subsidence. In this article I would like to compare subsidence and deformation of several different baseboards.
Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series | 2013
Radim Čajka; Roman Fojtík
Abstract In the paper is described the method of experimental temperature and strain measurement of reinforced concrete foundation slab during building-up of National Supercomputing Centre in Ostrava. This is a continuous measurement during the construction of this special structure.
Procedia Engineering | 2013
Radim Čajka; Roman Fojtík
Procedia Engineering | 2015
Vojtech Buchta; Martina Janulíková; Roman Fojtík
Procedia Engineering | 2016
Veronika Vašková; Roman Fojtík; David Pustka
Advanced Materials Research | 2014
Petr Janas; Ivan Kološ; Roman Fojtík
Advanced Materials Research | 2014
Roman Fojtík; Tomáš Novotný; Iveta Skotnicova; Martin Stolárik; Naďa Zdražilová; Miroslav Pinka