Dowels are located in transverse joints of Jointed Plain Concrete Pavements (JPCP) and they are used to provide load transfer between individual slabs, reduce faulting and improve performance. Dowels and the concrete itself are under the highest stress in the vicinity of joints; thus, in terms of pavement design, the joints are the weakest points of the whole structure. This study dealt with the drawbacks of JPCP with dowels. The evaluation was based on direct measurements on real airport and motorway pavements and highlights insufficient efficiency of load transfer and its possible causes. The authors present a successful outcome with validation by using the finite element method where high tensile stress values of the surrounding concrete were found.
The article describes the detailed traffic modelling in new city centre, which is actually widely discussed by public and experts. The core of the problem is lying on the municipality, which put on the table a final decision about the change the modal split for public transport development. The north part of new city centre, which is under construction the suburb bus station. The solutions of new tram routes are taken into account. Results of traffic studies show, that how could be this change re-define the current traffic behaviour and create for the new area new functional interest and certainly the new quality of relationships of the territory. The system solution is the new public transport service for this area with which will be created by a capacitive new tramway network. The transport model has the importance of these empirical experiences for practice and final decision making. The city of Bratislava had a very detailed and defined layout of the Master Transport Plan and is a big impact to change on the side of developers. The question is why they have not complied with it and the answer would be found, because exact scenarios can show the disproportion for each details of organization of traffic flows, public transport lines with results of measurable sustainable mobility together with accessibility.
The paper presents a view on the possibilities of using big data in traffic planning and traffic engineering, which are used in the urban and spatial planning of cities. The question is whether the method of this design activity—especially in feasibility studies, environmental impact assessments, or documentation for land-use decisions—can be part of Building Information Modelling (BIM). The result of this engineering activity could at the same time be linked to the documentation for building permits, where a number of professional civil engineers are already making full use of the BIM management system. The problem of traffic engineering and traffic planning is related to the need for extensive data, which are usually not available and, if they are, are from different database sources. Very often, however, engineers have to carry these tasks out with traffic surveys. Most often, these data are from transport centres, or from spatial databases of Geographical Information System (GIS) of cities or regions. In addition, in developed cities, detailed data from specialised strategic materials are available from municipal databases at various levels, in addition to the land-use plan that is the guarantor of the city’s development. Based on empirical experience from the creation of the new city centre of Bratislava, the authors present, from more than six years of engineering activity, what different data traffic engineers and planners need, which can be processed and unified to be part of the management system in the future and, thus, assist in the development of linear construction using BIM tools.
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