Technical Transactions. Iss. 2

Technical Transactions. Iss. 2

Type: Collection of magazine numbers
Release date

Collection items (16)


Protecting public spaces against vehicular terrorist attacks

Jasiński, Artur
Article
2018
The recent wave of terrorist attacks, where vehicles are driven into crowds of people, forces us to question the effectiveness of the current antiterrorism security measures in our cities, especially in open public spaces. Vehicular terrorism, a new form of Islamic terrorism, which involves the use of mechanical vehicles as a weapon against civilians, brings new challenges for the police, security agencies and mass event organisers, as well as for designers, architects and planners. This article considers the possibilities, costs and results of implementing actions and security measures that may reduce the risk of vehicular terrorism.

Interaction between hydraulic conditions and structures – fluid structure interaction problem solving. A case study of a hydraulic structure

Twaróg, Bernard
Article
2018
Contemporary analytical and computational techniques enable the researcher to define interaction between varying flow rates, varying volumes of filling water and the deformation and stresses occurring in the structural components of a hydraulic structure. This study aims to describe and create visualisations, under selected operating conditions, of displacements, deformations and stresses of a hydraulic structure resulting from loads generated by hydraulic conditions in standard components of the structure. A sample analysis was carried out for the Niedów earthen dam on the Witka River that failed in 2010 due to a disastrous inflow. The scope of this analysis covers the components of the spillway section: the spillway monolith, the dissipation basin slab and the flip bucket. The results of analytical work and visualisations are shown using the Flow3D software program.

Nonlinear static analysis of air cushion in SolidWorks Simulation 2016

Kwiatkowski, Dominik, Lisowski, Edward
Article
2018
The paper presents the results of research for load lifting process for a single pneumatic cushion. The load lifting process has been simulated in SolidWorks Simulation using the model of Mooney-Rivlin for hyperelastic material. Research was conducted based on a simplified 3D model and drawn up a mathematical model of pneumatic cushions determining of non-linear static characteristics for the lifting height depending on the weight of the load and supply pressure. The results compare with the results of laboratory tests conducted for the platform equipped with four air cushions.

Planning-related factors of the quality of the residential environment in the modelling of the functional spatial structure of Cracow

Ziobro, Anna
Article
2018
Models of functional spatial structures, thanks to information aggregation, facilitated the decision-making process in terms of the development of cities. Considering the quality of the residential environment in the planning-related approach, in the scale of the entire city, the Author investigates which elements should be presented in the analysed model. To this end, the Author undertakes an attempt at defining planningrelated factors of the quality of the residential environment and at assigning relevant indicators to them. These reflections focus on the example of Cracow.

Measurements of the angular and linear displacements of steered wheel

Wach, Krzysztof
Article
2018
This paper concerns the use of a prototype measuring instrument for conducting measurements of the linear and angular displacements of a steered wheel in relation to the car body. The theoretical principles of the measurement are presented, as are the notation method and a solution to the system of equations of the geometric constraints of the instrument’s mechanism. In the research section, the manner in which the measurements were conducted is discussed and sample results are described. A preliminary analysis of the results is performed in the summary section.

Towards the Cracow Metropolis – a dream or a reality? A selected issues

Gyurkovich, Mateusz, Sotoca, Adolfo
Article
2018
Cracow, the former capital of Poland and currently the second-largest Polish city, dreams of becoming the most important metropolis – not only of the Lesser Poland region, but also of the entire southern and south-eastern part of Poland. This paper, based on long-term research and field studies, also refers, in part, to the “Model of the Spatial Structure of Cracow” research programme, which was conducted at the Institute of Urban Design of the CUT under the guidance of M. Gyurkovich with collaboration with A. Sotoca, between October 2016 and July 2017. This is the background against which the selected issues of spatial transformations that took place within the city limits and that influence the urban morphology of Cracow, will be presented against. The type of spatial structure that can currently be observed in Cracow, does not bring to mind an association with the urban form of a European Metropolis. Can the contemporary attempts to create a polycentric urban organism- that can compete with other, well-organised ones, internationally, ever be successful? Will the dream of the Cracow Metropolis ever come true?

Load restraint with allsafe products. Part two: choosing a load securing system – a systematic analysis

Starkowski, Dariusz
Article
2018
This is the second part of an article concerning allsafe products (first is available in TT 1/2018, pp. 71–86) – it focuses on the planning role in the supply chain and the mechanisms that need to be taken into account during the process of the road transportation. Furthermore, the paper presents the results of an investigation that relates to the proper functioning of the supply chain in the distribution of 12,000 [kg] of strawberries. A weighted average method was used in reference to an analysis of load securing based on the products of three producers with the aim of indicating the safest and most modern way to secure the load in a semi-trailer. Rules of proper load placement and restraint inside the semi-trailer are also addressed, together with a loading plan associated with the analysis of the technical parameters of a semi-trailer and load securing systems.

The issue of the linearity of the waterfront based on the redevelopment of Lyon’s river banks

Zieliński, Rafał
Article
2018
The article discusses the issue of the redevelopment of Lyon’s waterfront areas and long-term development strategy following the process of redevelopment. Owing to the large scope of the operations in question and a radically different approach to the problem of the revitalisation of the areas where the city and water meet, it is possible to conduct comparative analyses by pointing out specific factors, which determine the success of the enterprise. That is why it is reasonable to consider the latest example of redevelopment, which is that of Confluence, a post-industrial district of Lyon. The degree of activation of this peninsula can be related to various factors, which create the linearity of the waterfront.

Water in the creation of revitalised urban areas. The case of King’s Cross Central

Nowacka-Rejzner, Urszula
Article
2018
The case study selected to illustrate the author’s considerations is the area in the northern part of London – the site of the next stage of the King’s Cross Central revitalisation project. The site has been selected mostly because of its location in the close vicinity of the historic centre of the city and because of its valuable cultural and natural assets. The author discusses the spatial transformations of the area focusing primarily on various options of using the qualities and properties of water and its relations with elements of built environment and greenery in shaping urban spaces of a new quality, yet preserving their identity.

Technical Transactions. Iss. 2

Number of the magazine
2018