Transportation Engineering Commons^™

Winter Maintenance On The Irish Road Network, Hugh Mcconnell, Brian Mccann

Civil Engineering Research in Ireland 2020

Winter maintenance relates to those activities undertaken where the objective is to minimise the impact of frost, ice or snow on the travelling public. The responsibility for winter maintenance of all roads in Ireland currently rests with local authorities and Transport Infrastructure Ireland (TII) (Formerly the NRA) on behalf of the Department of Transport, Tourism and Sport (DTTaS), (DTTaS, 2017). The aim of the study was to examine current winter maintenance practices undertaken in Ireland by local authorities and the Motorway Maintenance and Renewals Contracts (MMaRC) contractors and examine the potential financial, operational and environmental benefits if pre-wet and brine …

A Review Of Vision Based Methods For Pothole Detection And Road Profile Analysis, Darragh Lydon, S. E. Taylor, Myra Lydon, Julia Early

Civil Engineering Research in Ireland 2020

This paper is an overview of the development and application of Computer Vision for the detection of pothole, pavement distress and road profile analysis and categorisation. A brief explanation of the traditional methods for determining these factors is given, followed by a chronological description of the evolution and the challenges of using Computer Vision (CV) approaches to determine these conditions. The paper is separated into sections aligned to image capture and analysis methodologies. Qualitative evaluations and comparison of these methods have been provided along with the proposal of guidelines for new computer vision-based road analysis systems.

Winter Maintenance On The Irish Road Network, Hugh Mcconnell, Brian Mccann

Civil Engineering Research in Ireland 2020

Winter maintenance relates to those activities undertaken where the objective is to minimise the impact of frost, ice or snow on the travelling public. The responsibility for winter maintenance of all roads in Ireland currently rests with local authorities and Transport Infrastructure Ireland (TII) (Formerly the NRA) on behalf of the Department of Transport, Tourism and Sport (DTTaS), (DTTaS, 2017). The aim of the study was to examine current winter maintenance practices undertaken in Ireland by local authorities and the Motorway Maintenance and Renewals Contracts (MMaRC) contractors and examine the potential financial, operational and environmental benefits if pre-wet and brine …

Modelling The Thermal Behaviour Of A Precast Pcm Enhanced Concrete Cladding Panel, Dervilla Niall, Roger P. West, Oliver Kinnane, Richard Hegarty

Civil Engineering Research in Ireland 2020

According to the World Business Council for Sustainable Development there is currently a stock of more than 80 million buildings in Europe built between 1950 and 1975, a period during which energy performance was not considered in building design. To enable governments to comply with the European Directive 2010/31/EU on the energy performance of buildings, strategies are required to improve the energy efficiency of these buildings. Using the mass of a building to store or dissipate heat can reduce the demand on the auxiliary heating and/or cooling systems and hence reduce the overall energy demand of the building.

Previous research …

Analysis And Design Of A Novel Heavy-Duty Precast Element, Daniel Naughton, Michael Naughton, Michael O'Sullivan, Suhaib Salawdeh

Civil Engineering Research in Ireland 2020

Window sills are common to most buildings. In Ireland, concrete is the most popular material used for external sills. A standard one-metre concrete window sill weighs about 70kg. While external window sills are required to have sufficient capacity to resist damage during transportation and loading, they are non-structural elements. Therefore, there is no need for their high selfweight. This project looks to redesign concrete window sills to make them lighter. Decreasing the amount of concrete used in each sill would significantly reduce their self-weight. This would make concrete window sills more manageable in terms of transportation and installation. Two design …

Development And Localisation Of Ultra High Performance Concrete Using A Particle Packing Model, William Wilson, Tomas O'Flaherty

Civil Engineering Research in Ireland 2020

Ultra-high performance fibre reinforced concrete (UHPFRC) is used worldwide to improve the structural performance of infrastructure such as bridges, extend their working life and reduce environmental impact. As a result thinner structures are constructed leading to reductions in the structure’s self-weight and the volume of concrete and natural raw aggregates used in their construction. A drawback to UHPFRC is that it results in a significant rise in initial costs over normal and even high performance concretes, and it has very high binder contents, which in some cases is greater than 1100kg/m³. Therefore, the cost-efficiency and sustainability of this …

Composite Behaviour Of Wide Sandwich Panels With High Performance Concrete Thin Wythes With And Without Thermomass Shear Connectors, Jagoda Lipczynska, Roger P. West, Michael Grimes, Dervilla Niall, Oliver Kinnane, Richard Hegarty

Civil Engineering Research in Ireland 2020

To partly address the future sustainability of energy use in buildings, there is a program in Europe to retrofit domestic and commercial buildings with non-load bearing insulated re-cladding and over-cladding panels. Recent research work has shown that limited composite action is possible depending on the type of non-conductive shear connector and the stiffness of the insulation between the inner and outer wythes. This paper reports on the mix design development to develop high strength 20mm thick wythes and the manufacture of sandwich panels with five silicone-bonded layers of XPS insulation, making up a panel which is 220mm thick. These model …

On The Localized Settlement Of Geodetic Networks And Points For The Monitoring Of The Migration Of Landslides, B.R. Nazarov, H.T. Kayumova, R.X. Mukarramov

Journal of Tashkent Institute of Railway Engineers

The article is devoted to the formation of on-site geodetic network points to prevent geological processes such as landslides or large deformations, and provides methodology for establishing network points to continuously monitor the movement of avalanche sites. In addition, the methodology for the creation of geodetic network points at impassable distances are described.

Research Of Porosity Of A Cement Stone With A Zeolite Containing Filler And A Superplasticstificator, Anvar Ishanovich Adilhodzhaev, I.A. Kadyrov, K.S. Umarov

Journal of Tashkent Institute of Railway Engineers

The question of the influence of the zeolite-containing filler of the Beltau deposit and the polycarboxylate superplasticizer on the formation of porosity of cement stone is considered. The results of experiments to establish the effect of a zeolite-containing filler and a plasticizing additive on pore size distribution are graphically presented. The data obtained confirm the advisability of using this type of filler in concrete.

Features Of Laboratory Testing Methods Of Clayey Soils, A. Zhussupbekov, A. Tulebekova, U. Abduraimov

Journal of Tashkent Institute of Railway Engineers

The article compares the results of laboratory tests of dispersed soils to determine their strength characteristics. For this purpose, soils were tested on devices with three-axis compression and single-plane cut. In calculations for clay and sandy soils, indicators of their strength properties are used, which include such characteristics as the angle of internal friction φ and specific adhesion c. Based on the results of this work, recommendations on the practical application of the obtained soil characteristics for the geo-information geotechnical database of Astana were compiled.

Mathematical Modeling Of The Carriage Movement Along The Descending Part To Movement Of The Marshalling Hump, Kh.T Turanov, Sh.U. Saidivaliev, Sh.B. Djabbаrov, Kh.Kh. Djalilov

Journal of Tashkent Institute of Railway Engineers

In the article, based on the basic law of point dynamics with non-ideal connection of theoretical mechanics, the speed of the car movement on each section of the descending part of the marshalling hump. A generalized model of the speed of the car at the calculated point of the marshalling hump is obtained. This model made it possible to calculate the instantaneous values of the speed of the car from the top of the hill to the calculated point in a continuous mode. This made it possible to speed up the process of plotting changes in accelerations, speeds, and time …

On Design Features And Improvements Freight Wagon Braking Systems, U.Sh. Israilov

Journal of Tashkent Institute of Railway Engineers

The review of the basic schemes of brake lever transmissions used on freight wagons of Uzbekistan is presented. The advantages and disadvantages inherent to these schemes are shown. Methods of brake systems improvement are considered and the analysis of theoretical methods of their design evaluation is made.

Equipment For Transportation Of Wooden Materials: New Technological Solutions And The Use Of High Strong Steels, N.A. Tanicheva, I.O. Filippova, R.V. Rahimov, Ya.O. Ruzmetov

Journal of Tashkent Institute of Railway Engineers

There is a need to develop a new design of removable reusable means for the transportation of timber on universal wagon platforms, including using high-strength steel. The use of high-strength steel improves the technical and economic performance of platform wagons for the transportation of timber. The need to develop the regulatory and technical base for the introduction of new high-strength steels in the wagon industry has been identified.

Forecast Efficiency Of Application Of Electronic Documents In Cargo And Commercial Works On Railway Transport, N.M. Aripov, Sh.Sh. Kamaletdinov

Journal of Tashkent Institute of Railway Engineers

This article provides a predictive economic assessment of the introduction of electronic document management technology based on an electronic digital signature on the processes of freight and commercial work in rail transport. To determine the economic efficiency of the proposed technology, a technique was used that includes countable and uncountable effects. The constituent elements, the main economic indicators of the implementation of the automated system are detailed. Savings of money and time of railway transport and users of freight transportation services are determined.

Increasing The Train Safety Level Based On A Process Approach, A.Kh. Makhkamov, M.Sh. Valiev

Journal of Tashkent Institute of Railway Engineers

The article deals with improving the level of train traffic safety based on the process approach, provides a classification of failures of technical means and methods of their parry. The main attention is paid to the occurrence of cases of traffic safety violations. To increase the level of the DB support system, the entire process of organizing transportation is divided into four main blocks: management processes, resource support processes, production processes, interaction and control processes.

Modernization Of The Crate Suspension Unit Of The Vl-80s Electric Carrier, G.А. Khromova, D.O. Radjibaev, S.A. Khromov, I.C. Kamalov

Journal of Tashkent Institute of Railway Engineers

The article presents the development of a modernized design of a cradle suspension unit for an electric locomotive VL-80s with improved elastic-dissipative suspension properties with substantiation of dynamic and strength parameters. Numerical studies were carried out in the MathCAD 15 programming environment. For railway company is necessary to develop a new method of modernizing the cradle suspension of the VL-80s electric locomotive during overhaul repairs in order to improve the dynamic characteristics and increase the strength and reliability.

Research Of Development Prospects Of Transportation Hub In Jsc "Umc", Marufdjan Xalikovich Rasulov, Sh.M. Suyunbayev, M.N. Masharipov

Journal of Tashkent Institute of Railway Engineers

As you know, an increase in the volume of production of any object requires to reasonably provide for a comprehensive analysis of the compliance of its technical equipment and technology of work with the prospective traffic volumes. The article analyzes the existing and prospective volumes of work, shows the results of calculations, the available throughput capacity of the station. "B" - Art. "З" and the throughput of the receiving and departure tracks stations "Z", "P" and “S ", the required number of shunting locomotives has been determined, a number of measures have been proposed to improve the work of the …

Application Of Fiber-Optic Communication Line Under Control And Monitoring Of Track Relays In Station Rail Circuits, Q.K Nuriddinov, Z.I. Mamedova

Journal of Tashkent Institute of Railway Engineers

This article discusses the problems of using a fiber-optic transmission line under control and monitoring the voltage of track relays in station rail circuits. A functional diagram of the fast and central equipment of a fiber-optic transmission line and their interconnection are shown. Several different network modules for organizing data transfer are considered. Comparative analyzes are given, problems that arise during the operation of network modules and their solutions are described. As a result of the analysis, the optimal version of the network module was selected and recommendations for developing its software are given

Transfer Function Of A Traction Induction Motor Controlled By A Four-Quadrant Converter, As A Link Functional Diagnostics, M.C. Yakubov, Zh.S. Fayzullaev

Journal of Tashkent Institute of Railway Engineers

An expression for the transfer function of a traction asynchronous motor with a four-square converter is derived. It is shown that the basic properties of the traction motor, which are a four-square converter, correspond to the linearization coefficients. The values of linearization coefficients for a typical system in the entire region of equilibrium states.

Dynamic Characteristics Of The New Three-Phase Current Unbalance Transformer Converter, Sultan Fayzullayevich Amirov, S.X. Zhumaboyev, N.R. Yuldashev

Journal of Tashkent Institute of Railway Engineers

The article examines the dynamic characteristics of a new transformer Converter for three-phase current asymmetry. It is shown that when a three-phase current is applied to the input of the Converter, its transient characteristic consists of the sum of the established sinusoidal and free components, which decay at a speed that depends on the time constant of the magnetic circuit of the Converter.