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1
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Lateral Earth Pressure in Non-Cohesive Soils, Reinforced with Geotextiles in the Light of Laboratory Research

100%
Surowiecki A.
Logistics and Transport
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2016
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vol. 32
81-88
EN
The subject of the paper is the non-cohesive medium layer with geotextiles reinforced as foundation in communication building engineering. The influence of horizontal bidirectional reinforcement on the change of value of horizontal pressure in the laboratory physical models of ground medium layer is estimated. The most important effects reinforcement have been observed, regarding increasing model load capacity.
2
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Investigation into the Efficiency of Strengthening of Subgrade at the Proof Ground of Road Surface

100%
Surowiecki A.
Logistics and Transport
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2014
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vol. 22
67-72
EN
The aim of the investigation is the analysis of strengthening systems of road surfaces situated at the weak subgrade. The paper presents three systems of strengthening of road surface using geotextiles. The results of the analysis of road surface deformation moduli values are discussed. The value of deformation modulus on the basis of measurements of vertical displacements of loaded road surface was calculated. The investigations at the proof ground of road surface was executed. Particular efficiency of the use of GEOWEB cellular mattress as strengthening of road surface was confirmed.
3
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Multiscale Modelling in Railway Engineering

100%
Surowiecki A.
Logistics and Transport
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2014
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vol. 21
101-104
EN
The article presents the design and operation of selected types of physical simulation models of the railway track subgrade and transport earthen structures. These models include: - model section of railway track for testing vertical displacements, - test bench physical simulation models of reinforced railway track subgrade, - multiscale physical simulation model of the retaining wall made of reinforced ground stabilizing the transport embankment, The paper discusses the research of the displacement state of the models constructed. The results of research can be the foundation for designing subgrade reinforcements in modernised railway tracks.
4
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Environmental Protection Solutions in the Process of Modernisation of the Polish Railways

63%
Surowiecki A., Bujak A.
Central and Eastern European Journal of Management and Economics (CEEJME)
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2013
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vol. 1
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issue 1
93-111
EN
The authors discuss examples of solutions currently applied in the process of modernisation of main railway lines undertaken by the Polish PKP PLK S.A. in order to =assess compliance with the applicable environmental conditions. The solutions described pertain to nature conservation and restoration in the vicinity of railway routes. They are developed according to three assumptions: protection of animals along transport routes; traffic noise reduction; natural compensation which consists in restoration of the lands adjacent to railway lines in order to enhance water regimes and habitat conditions for animals.
5
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Modern Technologies in the Engineer Academic Teaching for the Transport Infrastructure Engineering Course

63%
Surowiecki A., Zieliński M.
Logistics and Transport
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2014
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vol. 24
77-80
EN
The proposal of introducing new technologies in the engineer academic teaching for the transport infrastructure engineering run at the International University of Logistics and Transport in Wrocław since 2012 is presented. The attention was given to the two main issues: − improvement of attraction and effectiveness of professional internships, − introduction of digital tools in education of transport infrastructure engineers. The collaboration with research institutes and rail and road authorities in to order to realize master’s theses is proposed. The procedure of realization of the master’s thesis is analysed. The e-learning ideology was presented, in particular: the service system, the participants of e-learning system, authorization of participants, kinds of didactic materials and the manner of their preparation, the kinds of courses and evaluation systems (tests, analysis of tasks, and also the manner of assessment of participants activity, by means of e.g. a questionnaire). Special attention was give to didactic staff’s participation in courses on methods and techniques of distance education.
6
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Reinforced Soil as Road Subsoil Strengthening (Model Investigation)

63%
Surowiecki A., Zieliński M.
Logistics and Transport
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2016
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vol. 29
65-70
EN
The issue of distortion and load bearing capacity of non-cohesive, monogenic and two layer soil, with vertical reinforcement, was analyzed. Separate inserts, single, double, triple and complex were used. Resistance parameters, in function of their characteristics, referring to reinforcement inserts, were evaluated. Soil base bearing capacity was calculated, on the basis of the research results of large size physical models distortion state, constructed on laboratory scale.
7
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The Analysis of the Stability of the Communication Support Stabilized by Gabion Wall with Variable Configuration

51%
Zamiar Z., Surowiecki A., Saska P., Balawejder A.
Logistics and Transport
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2019
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vol. 42
109-116
EN
The subject of the article concerns the stabilization of communication earthworks using the so-called lightweight retaining structures. The stability of the embankment with the embankment built with the gabion wall is analysed, assuming a uniformly distributed load on the crown and a case of unilateral water pressure in the event of a flood. Final results of stability calculations made with the Fellenius and Bishop method in the form of slip surface with the smallest value of the coefficient were presented. Then, assuming the case of damming up of flood water, discretization of the filtration area, velocity distribution and hydrodynamic grating and slip surfaces were developed. The variable parameter is the wall configuration.
8
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The Concept of Intermodal Shipment Terminal as a Complement of Transport Logistic Network for the Wrocław Agglomeration

51%
Surowiecki A., Wdowczyk P., Zieliński M.
Logistics and Transport
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2017
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vol. 33
69-76
EN
Wroclaw agglomeration is presented in the structure of the national and international transport system as well as directions of development of basic transport modes in Wroclaw. The situation of intermodal transport in Poland against the background of Europe and other countries was presented. Attention was drawn to the technical and technological problems of existing intermodal transport terminals in the Wroclaw agglomeration. The economic premises of the International Logistic Centre in Wrocław and the concepts of the Centre’s construction are discussed. The PKP PLK Wroclaw Osobowice station was proposed as the location of the Logistic Centre, whose main technological element is the intermodal transport terminal.
9
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Ways of Eliminating the Road Effect in Transition Zones from the Railway Track to Bridge Structures

51%
Zamiar Z., Surowiecki A., Saska P.
Logistics and Transport
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2019
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vol. 44
85-93
EN
Selected methods of constructing special inserts in the transition zones between the embankment of the railway track and the engineering object (bridge, viaduct, or culvert) were discussed. The purpose of mounting the designed inserts is to eliminate the so-called threshold effect, i.e. continuously creating a mild change in the stiffness of the ground under the track. In addition to the solutions presented in practice, attention was also paid to projects developed by the authors of this article. T
10
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Development Opportunities for Public Transport Facilities in the Wroclaw Agglomeration on Selected Examples

51%
Saska P., Surowiecki A., Zieliński M.
Logistics and Transport
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2016
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vol. 32
71-80
EN
The construction of passenger stops of the railway transport has been proposed in order to operate the communication infrastructure of two housing complexes – the village of Mirków and the Residential Estate ‘the Four Seasons’ (Polish: ‘Cztery Pory Roku’), belonging to the agglomeration of Wroclaw. The possibility of the location of the stops within the existing infrastructure is considered. There are presented several variants of the solution to the track layout with passenger service facilities (platforms). The parameters are provided to use for the proposed railroad turnouts and the track pavement structure. In the case of the Estate ‘Four Seasons’ there are also discussed the conditions for the construction of the tram route enabling communication with the center of Wroclaw. The concept of the tram loop in terms of the location of the estate area and the geometric layout of tracks is presented as well.
11
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Logistics Problems of Designing a Route for Public Rail Transport in the Psie Pole District in Wroclaw

51%
Surowiecki A., Antoniszyn G., Zieliński M., Gajewski R.
Logistics and Transport
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2016
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vol. 30
73-80
EN
The text discusses current problems of the public rail transport in the Wroclaw agglomeration, as well as the opportunities for its extension and future plans of the Wroclaw Municipality in that respect.
12
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Logistical Problems in the Field of Railway Tracks Modernization and Maintenance Technology

51%
Surowiecki A., Zieliński M., Winiarski M.
Logistics and Transport
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2016
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vol. 32
89-96
EN
The study presents the organization, mechanization and technology in the field of modernization and maintenance of Polish National Railway (PKP) lines, as well as in relation to the activities of the DOLKOM- Wroclaw company. Attention has been drawn to the major overhaul technology (resurfacing), the exchange of switches, surface maintenance and repair of the rail-bed (subgrade). The technological requirements, regarding the renovation and modernization of surface and rail-bed in the PKP railway network, have been discussed. In the field of rail-bed renovation, attention has been focused on the process of technological modernization of the track using a specialized multifunctional machine AHM-800R.
13
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Parameter of Cooperation of Composite Components in Views about Vertical Wall from Reinforced Soil

51%
Zamiar Z., Surowiecki A., Saska P.
Logistics and Transport
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2019
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vol. 44
77-84
EN
The publication considers reinforced soil in relation to the construction of retaining walls in communication construction. The basic elements determining the cooperation of reinforcement inserts with the ground centre are discussed, depending on the features characterizing the components of the composite. The method and selected results of tests performed on a massif model with a vertical wall made of non-cohesive ground have been presented. A calculation example is given concerning the internal dimensioning of the reinforcement of the considered massif model, assuming the work of inserts without slipping in the ground centre. The concept of reinforcement co-operation indicator with the ground centre was introduced and a dependence to calculate its value was developed. The values of co-operation indicators: general and partial, concerning individual measurement levels of the model have been presented appropriately.
14
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Model Studies of Distortion Condition Resistance Wall from Gabionic Elements

51%
Zamiar Z., Surowiecki A., Saska P.
Logistics and Transport
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2019
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vol. 43
47-56
EN
Retaining walls have been classified and characterized as structures protecting road or railway embankments against landslides. Particular attention was focused on retaining structures classified as light [1-3, 5-12, 14-24], which include, among others, walls made of gabions. Physical models of the gabion retaining wall, prepared on a laboratory scale, test stand and how to perform spatial deformation tests are presented. The models differed in the number and dimensions of gabions. On the basis of measured horizontal deformations of embankment models with a gabion wall, which were subjected to vertical static pressure at the level of the embankment ceiling, the values of basic strength parameters were determined. In particular, the value calculated: horizontal pressure coefficient, shear strength and modulus of deformation. The variability of the values of these parameters was estimated as a function of variable factors related to the gabion wall configuration (determined by the number and dimensions of gabions) and the value of the external load test.
15
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The Operational Safety of the Railway Track in the Area of a Bridge Structure Made of Corrugated Sheets

51%
Saska P., Ryczyński J., Surowiecki A., Duchaczek A.
Logistics and Transport
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2016
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vol. 32
65-70
EN
The subject of the article is the assessment of effectiveness of the cooperation between the railway track pavement with a pass of the flexible ground-coating construction made of corrugated sheets, in terms of traffic safety. The object of the research is the track surface, located within the said structure, under operational loading conditions. The article contains the discussion of the concept of the research project currently being prepared by the authors. In particular, there are presented: the object of research, the purpose of the project, its thematic scope and the method of research, as well as theoretical models of research, the specification of tasks implemented in the project, the way of the field verification of the theoretical approach to the issue in question and the expected results of the research.
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