Automated account of soil cylindrical anisotropy in the formation of design diagrams of tunnel linings

Вестник МГСУ 8/2015
  • Nesterov Ivan Vladimirovich - Moscow State University of Railway Engineering (MIIT) Candidate of Technical Sciences, Associate Professor, chair, Department of Structural Mechanics, Moscow State University of Railway Engineering (MIIT), 9 Obraztsova str., Moscow, 127994, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Gurkova Margarita Aleksandrovna - Moscow State University of Railway Engineering (MIIT) Candidate of Technical Sciences, Associate Professor, Department of Structural Mechanics, Moscow State University of Railway Engineering (MIIT), 9 Obraztsova str., Moscow, 127994, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Smirnova Ol’ga Vladimirovna - Moscow State University of Railway Engineering (MIIT) Candidate of Technical Sciences, Associate Professor, Department of Structural Mechanics, Moscow State University of Railway Engineering (MIIT), 9 Obraztsova str., Moscow, 127994, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Naumov Vladimir Sergeevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Structural Mechanics, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Naumova Tat’yana Aleksandrovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Associate Professor, Department of Structural Mechanics, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 109-117

One of the most popular modern methods of tunnel linings’ calculation with account for their interaction with the soil is finite element method. Because of the constant increase of computation capacities at the present time the tasks of algorithm development dominate, which account for the lining operation - soil for complicated geological conditions. The given work presents the computational algorithm of account of the distribution nonuniformity of the physical characteristics of ground medium over the surface of finishing at intersection of the interface of geological layers by the tunnel axis. The algorithm uses mathematical models of the finite elements method and it is adapted for the realization in the system of stress analysis of tunnel linings developed by the authors. The authors enumerate the disadvantages of different calculations and try to overcome them. For this aim the beam model of the system “lining - soil” is suggested.

DOI: 10.22227/1997-0935.2015.8.109-117

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  7. Franzius J.N., Potts D.M. Influence of Mesh Geometry on Three-Dimensional Finite-Element Analysis of Tunnel Excavation. International Journal of Geomechanics. 2005, vol. 5, no. 3, pp. 256—266. DOI: http://dx.doi.org/10.1061/(ASCE)1532-3641(2005)5:3(256).
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  10. Zakharov E.M., Vasil’ev V.M. Problemy proektirovaniya, stroitel’stva i ekspluatatsii kanalizatsionnykh tonnel’nykh kollektorov v Sank-Peterburge [Problems of Design, Construction and Operation of Sewage Tunnel Collectors in Saint Petersburg]. Tonneli i metropoliteny [Tunnels and Subways]. 2003, no. 6, pp. 10—11. (In Russian)
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  19. Gadzhuntsev M.I. Priblizhennyy raschet podzemnogo sooruzheniya krugovogo ochertaniya pri uchete faktora polzuchesti zasypki [An Approximate Calculation of a Circular Underground Structure with Account for Filling Creep Factor]. The manuscript deposited in All-Russian Institute for Scientific and Technical Information (VINITI), no. 1782-V 98, 1998, 5 p. (In Russian)
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  22. Bernaud D. Tunnels profonds dans les milieux viscoplastique: approches expérimentale et numérique. Thése. École National des Ponts et Chaussées, France. 1991. Available at: https://tel.archives-ouvertes.fr/tel-00529719/. Date of access: 15.05.2015.
  23. Surjadinata J., Hull T.S., Carter J.P., Poulos H.G. Combined Finite- and Boundary-Element Analysis of the Effects of Tunneling on Single Piles. International Journal of Geomechanics. 2006, vol. 6, no. 5, pp. 374—377. DOI: http://dx.doi.org/10.1061/(ASCE)1532-3641(2006)6:5(374).

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DEVELOPMENT OF THE ALGORITHM AND THE COMPUTER-AIDED PROGRAMME FOR OPTIMIZATION OF THE PROCESS OF SELECTION OF THE TRENCHLESS METHOD OF RENOVATION OF PRESSURE AND PRESSURE-FREE PIPELINES

Вестник МГСУ 4/2012
  • Orlov Vladimir Aleksandrovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Head of the Department of Water Supply and Waste Water Treatment, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Zotkin Sergey Petrovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Informatics and Applied Mathematics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Orlov Evgeniy Vladimirovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Scienc- es, Associate Professor, Department of Water Supply, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Maleeva Anna Vladimirovna - Moscow State University of Civil Engineering (MSUCE) master student, Department of Water Supply, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russ; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 181 - 186

The factors of impact onto the process of selection of the optimal method of renovation of pressure and pressure-free pipes are considered in the article. The programme algorithm, input and output user information, the sequence of actions within the framework of the user-to-software interaction are presented, and the optimal renovation method is provided. The software programme is designated for researchers, designers and specialists of construction companies and design firms.
The output data are arranged as a bar chart that covers the cost of work, the timing of work, as well as the time, technology and hydraulics-related factors that impact the choice of a trenchless renovation method characterized by the smallest average-weighted indicator.

DOI: 10.22227/1997-0935.2012.4.181 - 186

Библиографический список
  1. Khramenkov S.V., Orlov V.A., Khar'kin V.A. Optimizatsiya vosstanovleniya vodootvodyashchikh setey [Optimization of Repair of Water Disposal Networks]. Moscow, Stroyizdat Publ., 2002, 159 p.
  2. Orlov V.A. Stroitel'stvo i rekonstruktsiya inzhenernyh setey i sooruzheniy [Construction and Restructuring of Engineering Networks and Structures]. Akademiya Publ., 2010, 301 p.

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ALGORITHMS FOR CONSTRUCTING AND CALIBRATING ELECTRONIC MODELS OF WATER SUPPLY SYSTEM

Вестник МГСУ 7/2018 Том 13
  • Primin Oleg Grigorievich - MosvodokanalNIIproekt Doctor of technical Sciences, Professor, Deputy General Director, MosvodokanalNIIproekt, 22 Pleteshkovsky per., Moscow, 105005, Russian Federation.
  • Gromov Grigory Nikolaevich - MosvodokanalNIIproekt Head of the Department for the design of sewage and water supply facilities, MosvodokanalNIIproekt, 22 Pleteshkovsky per., Moscow, 105005, Russian Federation.
  • Ten Adilovic Andrey - Joint Stock Company Mosvodokanal Sewage Network Operations Division Deputy Chief Engineer, Joint Stock Company Mosvodokanal, 2 Pleteshkovsky lane, Moscow, 105005, Russian Federation.

Страницы 847-854

Subject: the deterioration and technical condition of water supply and drainage pipelines in most of Russia’s settlements, the limitation of material resources for their restoration and renovation in conditions of housing and communal services reform, require a scientifically grounded approach to the reconstruction and modernization of these systems [1-4]. To solve these problems, the Government of the Russian Federation approved and introduced normative documents1, 2. According to them, the development of centralized water supply and water disposal systems is carried out only in accordance with the general schemes of these systems3. As part of these schemes, it is necessary to develop an electronic model of a centralized water supply and disposal system for an objective assessment of the impact of activities aimed at optimizing their work [5]. The algorithm for constructing and calibrating the electronic model of the city’s water supply system is the subject of this study. Research objectives: development of a methodology for constructing electronic models and algorithms of calibrations which are applicable to the Russian Zulu software. Materials and methods: for an objective assessment of the impact of long-term measures aimed at improving the operation of the water supply network, as well as the development of the city’s water supply system, we use modeling along with the implementation of an adequate electronic model. The adequacy of the electronic model is achieved via its calibration [6]. The object of the research is the water supply system of Minsk and Salavat in the development of electronic models for realization of their development and reconstruction directions. Results: based on the experience of implementation of a number of water supply systems (Ufa, Irkutsk, Penza, Orenburg, Tyumen, Salavat, Minsk), a methodology for constructing and calibrating electronic models was developed; the algorithms applicable to the Russian Zulu software and necessary for construction of models were also developed. Conclusions: the results of the work are implemented on a number of water supply systems in the cities of Russia and can be recommended for application of information technologies in electronic model realization, the assessment and analysis of the functioning of water supply systems and the optimization of their operation.

DOI: 10.22227/1997-0935.2018.7.847-854

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DURABILITY-RELATED CHARACTERISTICS OF DOUBLE-LAYER STRUCTURES OF PIPELINES CONNECTED TO POLYMERIC SLEEVES

Вестник МГСУ 2/2012
  • Orlov Vladimir Alexandrovich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Head of Department of Water Supply 8 (499) 183-36-29, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Primin Oleg Grigor'evich - OAO MosvodokanalNIIproekt (Open Joint Stock Company Moscow Research Institute of Water Supply Networks Design) Doctor of Technical Sciences, Professor, Assistant to the General Director in charge of scientific research 8 (499) 261-53-84, OAO MosvodokanalNIIproekt (Open Joint Stock Company Moscow Research Institute of Water Supply Networks Design), Office 8, 22 Pleteshkovskij pereulok, Moscow, 105005, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Scherbakov Vladimir Ivanovich - Voronezh State University of Architecture and Civil Engineering (VGASU) Doctor of Technical Sciences, Professor, Department of Hydraulics, Water Supply and Water Removal 8 (473) 271-52-68, Voronezh State University of Architecture and Civil Engineering (VGASU), 84 20-letija Oktjabrja st., Voronezh, 394006, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 15 - 19

Results of the research aimed at the development of the basic criteria and principal methodological approaches to the calculation and design that underlies any repair undertaking associated with the restructuring of engineering networks through the application of a polymeric sleeve. It is noteworthy that the pipeline material and the degree of its deprecation, identified on the basis of the residual pipe thickness, the length and the diameter of each pipeline section being repaired, the media pumped into the pipeline, the adjacent ground and subterranean infrastructure, the presence of any subterranean waters and other factors are to be considered in each specific case.
A software programme designated for the calculation of the durability of double-layer structures of pipelines connected to polymeric sleeves has been developed. The software makes it possible to consider a wide range of properties of a polymeric sleeve to identify its behavior driven by any alterations in the input information, and to select the most economical and technologically efficient option within the limits imposed by the durability-related requirements pre-set in the design.
The ultimate objective of the software programme is to assess the applicability of the trenchless repair method involving a polymeric sleeve in each specific case by taking account of the environment and the condition of the pipeline. The software is also capable of developing the requirements to be fulfilled by subcontractors in order to assure the appropriate quality of any repair work performed and the reliability of any pipeline sections repaired.

DOI: 10.22227/1997-0935.2012.2.15 - 19

Библиографический список
  1. Hramenkov S.V., Orlov V.A., Har'kin V.A. Optimizacija vosstanovlenija vodootvodjaschih setej [Optimization of Repairs of Water Ppelines]. Moscow, Strojizdat, 2002, 159 p.
  2. Orlov V.A., Har'kin V.A. Strategija i metody vosstanovlenija podzemnyh truboprovodov [Strategy and Methods of Restoration of Subterranean Pipelines]. Moscow, Strojizdat, 2001, 95 p.

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AUTOMATED DYNAMIC LOAD CONTROL BY ELECTROMECHANICAL SYSTEMS OF A BUCKET-CHAIN EXCAVATOR IN THE COURSE OF SCOOPING

Вестник МГСУ 7/2012
  • Khayrullin Rustam Zinnatullovich - Moscow State University of Civil Engineering (MGSU) Doctor of Physical and Mathematical Sciences, senior scientific worker, Professor, Department of Higher Mathematics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 125 - 129

Methods and algorithms of control of the tension of lifting and towing ropes of bucket-chain excavators are proposed in the article. They are based on the non-linear dependence of the current path length and intensity of excavation efforts. Three automatic control modes, including scooping, correction signals and automatic overload protection, are implemented. Two independent control loops in charge of tension of lifting and towing ropes are developed.
The proposed automated control system may be integrated both into new bucket-chain excavators and into those excavators that are already in operation. The new system does not require any substantial alterations in electric drive control systems in charge of lifting and towing, if integrated into excavators in operation.
The author has performed the non-linearity analysis; he has also designed, developed and implemented the models that are capable of taking an adequate account of the system peculiarities identified in the course of the project implementation. The system parameters are adjustable to specific conditions of the excavator operation, including the hardness of the rock extracted by the excavator, etc.
The automatic overload control system attached to the electric drives in control of lifting and towing ensures maximal responsiveness of the system based on the commutation-related limitations imposed by power-driven elements, maximal over-control values and variability of the transition process.
Prevention of any rope slacks in the course of scooping of any hard rock is assured by the loop of regulation of minimal tension of lifting cables.
The service life of lifting and towing ropes goes up by eight to ten weeks, if the system proposed by the author is implemented.

DOI: 10.22227/1997-0935.2012.7.125 - 129

Библиографический список
  1. Zalesov O.A., Lomakin M.S., Peters G.B. Upravlenie protsessom kopaniya draglayna, regulirovaniem natyazheniya pod”emnykh kanatov [Control over the Process of Digging Performed by the Bucket-chain Excavator through Adjustment of Lifting Cables Tension]. Izvestiya vuzov. Gornyy zhurnal [News of Higher Education Institutions. Mining Journal]. 1975, no. 4.
  2. Lomakin M.S. Avtomaticheskoe upravlenie tekhnologicheskimi protsessami kar’erov [Automated Control over Open Pit Mining Workflows]. Moscow, Nedra Publ., 1978.
  3. Irzhak Yu.M., Kuznetsov V.I. Avtomaticheskiy vybor slabiny pod”emnogo kanata ekskavatoradraglayna [Automated Selection of Tension of the Lifting Cable of a Bucket-chain Excavator]. Izvestiya vuzov. Gornyy zhurnal [News of Higher Education Institutions. Mining Journal]. 1979, no. 6.
  4. Pevzner L.D., Lomakin M.S. Sovremennoe sostoyanie i perspektivy razvitiya sistem elektroprivoda i avtomatizatsii odnokovshovykh ekskavatorov [Present-day Status and Prospects for Development of Systems of Power Drives and Automation of Single-Bucket Excavators]. Moscow, 2000.
  5. Pevzner L.D. Teoriya sistem upravleniya [Theory of Control Systems]. Moscow, MGGU, 2002.
  6. Poderni R.Yu. Mekhanicheskoe oborudovanie kar’erov [Mechanical Equipment of Open Pit Mines]. Moscow, 2007.
  7. Samoylenko A.M. Sistema programmnogo regulirovaniya natyazheniya pod”emnykh i tyagovykh kanatov draglayna [System of Software-based Adjustment of Tension of Lifting and Hauling Cables of a Bucket-chain Excavator]. Gornyy informatsionno-analiticheskiy byulleten’ [Bulletin of Mining Information and Analysis]. Moscow, MGGU, 2011, no. 6.
  8. Lomakin M.S., Romashenkov A.M., Samoylenko A.M. Avtomatizirovannaya sistema upravleniya vzaimodeystviem elektroprivodov pod”ema i tyagi moshchnogo ekskavatora draglayna v protsesse kopaniya [Automated System of Control over Interaction between Electric Drives in Charge of Lifting and Hauling as Part of a High-Capacity Bucket-chain Excavator in the Process of Digging]. Gornyy informatsionno-analiticheskiy byulleten’ [Bulletin of Mining Information and Analysis]. 2006, no. 2.
  9. Khayrullin R.Z., Pevzner L.D., Goryunov V.Yu. Optimal’noe upravlenie dvizheniem kovsha ekskavatora-draglayna [Optimal Control over the Motion Pattern of the Scoop of a Bucket-Chain Excavator]. Institute of Applied Mathematics of the Russian Academy of Sciences, 1998, no. 72.
  10. Khayrullin R.Z. K issledovaniyu manevrennykh vozmozhnostey ekskavatora-draglayna [Analysis of Maneuverability of the Bucket-Chain Excavator]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 4, pp. 49—53.

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METHODOLOGY AND SOFTWARE DESIGNATED FOR THE CALCULATION OF VALUES OF CHEZY DISCHARGE COEFFICIENT C AND RELATIVE ROUGHNESS COEFFICIENT n WITHIN THE FRAMWEWORK OF RESEARCH OF FREE-FLOW PIPELINES

Вестник МГСУ 3/2012
  • Orlov Vladimir Aleksandrovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Head of the Department of Water Supply and Waste Water Treatment, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Zotkin Sergey Petrovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Informatics and Applied Mathematics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Orlov Evgeniy Vladimirovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Scienc- es, Associate Professor, Department of Water Supply, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Khurgin Roman Efimovich - Moscow State University of Civil Engineering (MSUCE) Senior Lecturer, Department of Water Supply, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russia; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Maleeva Anna Vladimirovna - Moscow State University of Civil Engineering (MSUCE) master student, Department of Water Supply, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russ; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 205 - 210

The article represents a brief overview of the software programme designated for computer-aided calculation of values of the Chezy discharge coefficient. Recommendations are also provided to users of the proposed software. The proposed methodology is designated for the automated processing of the experimental data obtained in the course of the research of free water flows passing through the hydraulic test rig. The methodology is also designated for the identification of the mathematical relation describing the alteration of hydraulic exponents and for the construction of graphs to illustrate the relations describing the free flow inside pipelines, if made of different types of materials that display varied roughness values.
The proposed methodology represents a set of successive stages to be implemented.
Stage 1. Identification of pressure loss, if the pipeline length is equal to h, and the hydraulic friction coefficient is equal to λ.
Stage 2. Calculation of the average flow strength.
Stage 3. Calculation of hydraulic friction coefficient λ.
Stage 4. Calculation of average filling value h/dave in the beginning and in the end of the experimental section of the water flow; calculation of hydraulic radius Rave.
Stage 5. Calculation of С, Chezy discharge coefficient.
The following steps are to be performed to calculate coefficient of roughness n:
Selection of optimal relation С=f(R) from the multiplicity of proposed relations;
Solving the two equations in relation to n.
The proposed software employs the half-interval method to identify the value of n.
The software is also capable of generating graphs (curves) to describe the relations in question.
The proposed methodology and the software designated for the calculation of Chezy and roughness coefficients makes it possible for users to identify the hydraulic properties of pipelines made of advanced materials or having advanced coatings. The availability of the above information is to optimize the selection of the pipeline repair material on the basis of the assessment of hydraulic compatibility between the sections of the pipeline in operation and those being repaired.

DOI: 10.22227/1997-0935.2012.3.205 - 210

Библиографический список
  1. Khramenkov S.V., Orlov V.A., Khar’kin V.A. Optimizatsiya vosstanovleniya vodootvodyashchikh setey [Optimization of Repair of Water Disposal Networks]. Moscow, Stroyizdat, 2002, 159 p.
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SEQUENCE VARIANTS IN THE CONSTRUCTION OF THE CONFIGURATION OF DESARGUES

Вестник МГСУ 9/2016
  • Ivashchenko Andrey Viktorovich - Union of Moscow Architects 90/17 Shosseynaya str., Moscow, 109383, Russian Federation; ivashchenkoa@inbox.ru, Union of Moscow Architects, 7 Granatnyy per., Moscow, 123001, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Znamenskaya Elena Pavlovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Descriptive Geometry and Graphics, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 130-139

The article presents the results of the analysis to assess the multi-variant approaches to constructing the Desargues configuration which is the fundamental to projective geometry and projective graphics. From the practical point it is the basis for the theory of perspective and is widely used to solve various tasks, such as constructing shadows in perspective, a direct, incidentally out of the rich within the drawing of the vanishing point, etc. The authors present the algorithm of the possible variants of construction of the Desargues configuration using computer technologies. The computer implementation of theoretical provisions of separate aspects of projective geometry and graphics has previously been considered as applied to Johnson polyhedrons. As any other figure the configuration of Desargues may be constructed by different methods. The authors consider the choice of points and directs included into the configuration and different interpretations of the relations of the point. The considered algorithm of the possible variants of the Desargues configuration construction will allow widely using the configuration in design of complex architectural and design volumes, consisting of a series of simple overlapping forms, by means of modern computer technology.

DOI: 10.22227/1997-0935.2016.9.130-139

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METHODOLOGY AND ALGORITHM OF OPTIMIZATION OF THE NEED OF SETTLEMENTS FOR TECHNICAL INSPECTION LINES FOR VEHICLES

Вестник МГСУ 6/2016
  • Kanen Mahmoud Fadlallah Hador - Ivanovo State Polytechnic University (IVGPU) postgraduate student, Department of Vehicles and Vehicle Fleet, Ivanovo State Polytechnic University (IVGPU), 20, 8 Marta str., Ivanovo, 153037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Maslennikov Valeriy Aleksandrovich - Ivanovo State Polytechnic University (IVGPU) Candidate of Technical Sciences, Associate Professor, chair, Department of Vehicles and Vehicle Fleet, Ivanovo State Polytechnic University (IVGPU), 20, 8 Marta str., Ivanovo, 153037, Russian Federation.

Страницы 107-117

The current methods of predicting the demand of the community for the lines of technical inspection of vehicles do not fully take into account the probabilistic and statistical nature of the complaints of car owners. This results in significant mistakes in the determination of the number of such lines, accompanied by insufficient rhythm of their operation. The design errors related to the complexity of accurate account for calendar fluctuations of the number of appeals can be partially or completely eliminated by using mathematical apparatus of the queuing theory. In this case, the complex technical system is considered as an open multi-channel queuing system with limited queue length. The received flows and serviced requests are considered to be the simplest. From a practical point of view, the replacement of one type of computational model by the other allows ensuring a more sustainable mode of calculating operations using the computer. The paper also provides a calculation expression for defining the lower and upper confidence limits of the dispersion of the average values of the number of arrivals of vehicles at the technical inspection that allows setting the interval of uncertainty for searching the optimal solution.

DOI: 10.22227/1997-0935.2016.6.107-117

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