MATHEMATICAL MODELING OF THE IMPACT OF RAW MATERIAL COMPOSITION ON COMPRESSIVE STRENGTH OF HIGH PERFORMANCE FINE-GRAINED CONCRETE

Vestnik MGSU 9/2017 Volume 12
  • Tang Van Lam - Moscow State University of Civil Engineering (National Research University) (MGSU) Postgraduate Student, Department Technology of Binders and Concretes, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Bulgakov Boris Igorevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of the Technology of Binders and Concretes, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Aleksandrova Olga Vladimirovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department Technology of Binders and Concretes, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 999-1009

Subject of Study: the creation and analysis of mathematical models adequately describing the effect of the input variable factors - the proportions of raw components of the concrete mix - on the compressive strength of high performance fine-grained concrete at the age of 28 days of normal hardening, which are considered as output objective functions. Objectives: to determine the optimum ratios of ingredients of fine-grained concrete mixture, which allow us to achieve the maximum strength of concrete in compression. Materials: for obtaining fine-grained concrete mix, a finely distributed binder was used consisting of Portland cement of the type CEM II 42,5 N produced by the “Hoang Thach” factory, fly ash, rice husk ash (all - Vietnam) with addition of superplasticizer Ace 388 BASF (Germany) and polypropylene fine fibers Mega Mesh (Malaysia). As for the fine filler, quartz sand from the Lo river (Vietnam) was used. Methods: the compressive strength of high performance fine-grained concrete was determined in accordance with the requirements of GOST 10180-2012 “Concretes. Methods of strength determination by control samples”; the initial composition of the concrete mix was calculated using the absolute volume method. Results: the paper presents results of mathematical modeling of the effect of raw materials on the compressive strength of high performance fine-grained concrete at 28 days of normal hardening. First and second order regression equations for the dependence of the compressive strength on the ratio of raw materials x2 () and x3 () and also the image of the surface expression and the contour of the objective function for these regression equations were obtained. Conclusions: The maximum value of compressive strength of high performance fine-grained concrete at 28 days of age, evaluated by using the computer program Maple 13 in the regression equation of the second order, is R = 75.85 MPa at = 0.854 and = 0.324.

DOI: 10.22227/1997-0935.2017.9.999-1009

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ANALYSIS OF DEVIATIONS AND MOUNTING STRESS-STRAIN STATE IN THE TRANSVERSE DIAPHRAGM OF CYLINDRICAL ROOF STRUCTURE

Vestnik MGSU 11/2017 Volume 12
  • Bondarev Aleksey Borisovich - Joint Stock Company "Matrosov Mine" (JSC "RiM") engineer on metal constructions, Joint Stock Company, Joint Stock Company "Matrosov Mine" (JSC "RiM"), 12 Proletarskaya str., Magadan, 685000, Russian Federation.
  • Yugov Anatoliy Mikhaylovich - Donbas National Academy of Civil Engineering and Architecture (DonNACEA) Doctor of Technical Sciences, Professor, Head of Construction Engineering and Management Department, Donbas National Academy of Civil Engineering and Architecture (DonNACEA), 2 Derzhavina str., Makiivka, Donetsk obl., 86123, Ukraine.
  • Garanzha Igor’ Mikhaylovich - Moscow State University of Civil Engineering (National Research University) Candidate of Technical Sciences, Associate Professor, Department of Metal Structures, Moscow State University of Civil Engineering (National Research University), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Shchukina Liliya Sergeevna - Donbas National Academy of Civil Engineering and Architecture (DonNACEA) graduate student, Construction Engineering and Management Department., Donbas National Academy of Civil Engineering and Architecture (DonNACEA), 2 Derzhavina str., Makiivka, Donetsk obl., 86123, Ukraine.

Pages 1248-1260

Subject: In this article we review and analyze structural forms and methods for accounting for deviations in metal roof structures. The article also reviews and analyzes previously performed works and methods for accounting for deviations in the design of metal structures. Research objectives: analysis of deviation values and mounting stress-strain state (MSSS) of the transverse diaphragm of a single-chord hinge-rod metal shell. A comparative calculation of deviations and calculation results analysis was made on the example of a transverse diaphragm of a single-chord hinge-rod metal shell of the roof structure for different technological assembly-mounting schemes: from the supports to the arch center, and vice versa, from the arch center to its supports. Materials and methods: geometrical method for determining deviations is implemented in the the author’s computer program - computing complex of dimensional analysis (CP CCDA); method of finite elements (FEM) is used for determining mounting stress-strain state and is implemented in SCAD 11.5. Results: The calculation and analysis of the mounting stress-strain state (MSSS) of the diaphragm was performed. Out of two assembly schemes considered in the paper we recommend the second technological scheme of assembly-mounting and also possible ways of compensation for the assembly deviations in the end diaphragm of the cylindrical roof structure of the hangar. We suggest possible options for modeling deviations of individual members of rod systems for several types of profiles and we propose possible cross sections of diaphragms of arched roof structures. Conclusions: the methodology for determining the installation deviations and the method for determining the MSSS, proposed in this article, can be used to determine deviations in a variety of large-span hinge-rod metal structures.

DOI: 10.22227/1997-0935.2017.11.1248-1260

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Strength of the expandedstretching profile: tests and mathematical modeling

Vestnik MGSU 12/2013
  • Sinelnikov Aleksey Sergeevich - Saint Petersburg State Polytechnical University (SPbGPU) postgraduate student, Department of Unique Buildings and Structures Engineering, Saint Petersburg State Polytechnical University (SPbGPU), 29 Polytechnicheskaya, st., St.Petersburg, 195251, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Orlova Anna Vladimirovna - Saint Petersburg State Polytechnical University (SPbGPU) student, Department of Unique Buildings and Structures Engineering, Saint Petersburg State Polytechnical University (SPbGPU), 29 Polytechnicheskaya, st., St.Petersburg, 195251, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 41-54

This summary report is based on the experimental and numerical research of thin-walled cross-section’s compression resistance carried out in St. Petersburg State Polytechnical University. Current situation on the Russian market concerning the usage of cold-formed thin walled cross-sections is aimed at finding out a base foundation to start up a stipulation of the elements under discussion in the building industry. Some questions about the compression resistance of such cross-sections were raised at different conferences by scientific community and such companies as Arsenal ST, Baltprofile (Russia) and Rautaruukki Oyj (Finland). In this field a number of Doctoral theses have been defended during recent years in Russia (A.R. Tusnin, G.I. Belyy, I.V. Astakhov, D.V. Kuz'menko). Steel galvanized Cand U-profiles and thermo-profiles are the types of thin-walled cross-sections are normally used in small houses construction. Thermo-profiles have slots in webs that decrease the thermal flow through the web, but have negative effect on strength of the profiles. Reticular-stretched thermo-profile is a new type of thin-walled cross-sections that found its place on Russian market. These profiles were an object of the research. The carried out investigations included tests to prove the compression resistance of the thin-walled cross-sections. The compression tests as a result showed the behavior of stud’s profile under critical load. The specimen was compressed under various loads and deformation was recorded. In order to get buckling force a load-deformation diagram was plotted and analyzed. Analytical modeling of thin-walled cross-sections was done with contemporary analysis software (SCAD Office) using finite element method (FEM). During the modeling process the thin-walled profile based on shelland bar-elements were created and buckling analysis task showed good results.

DOI: 10.22227/1997-0935.2013.12.41-54

References
  1. Shatov D.S. Konechnoelementnoe modelirovanie perforirovannykh stoek otkrytogo secheniya iz kholodnognutykh profiley [Finite Element Modelling of Perforated Stays of Open Section Made of Cold-bent sections]. Inzhenerno stroitel'nyy zhurnal [Engineering Construction Journal]. 2011, no. 3, pp. 32—34.
  2. Gordeeva A.O., Vatin N.I. Raschetnaya konechno-elementnaya model' kholodnognutogo perforirovannogo tonkostennogo sterzhnya v programmno-vychislitel'nom komplekse SCADOffice. Inzhenerno stroitel'nyy zhurnal [Calculation Finite Element Model of a Cold-formed Perforated Thin-wall Shank in Programming and Computing Suite SCADOffice]. 2011, no. 3, pp. 36—46.
  3. Zhmarin E.N. Mezhdunarodnaya assotsiatsiya legkogo stal'nogo stroitel'stva [International Assosiation of Light Steel Engineering]. Stroitel'stvo unikal'nykh zdaniy i sooruzheniy [Construction of Unique Buildings and Structures]. 2012, no. 2, pp. 27—30.
  4. Yurchenko V.V. Proektirovanie karkasov zdaniy iz tonkostennykh kholodnognutykh profiley v srede «SCADOffice» [Buildings Framework Modellng Made of Thin-wall Cold-formed Profiles in SCADOffice]. Inzhenerno stroitel'nyy zhurnal [Engineering Construction Journal]. 2010, no. 8, pp. 38—46.
  5. Vatin N.I., Popova E.N. Termoprofil' v legkikh stal'nykh stroitel'nykh konstruktsiyakh [Thermal Profile in Light Steel Building Structures]. Saint Petersburg, SPbGPU Publ., 2006, 63 p.
  6. Kolesov A.I., Lapshin A.A., Valov A.V. Sovremennye metody issledovaniya tonkostennykh stal'nykh konstruktsiy [Modern Methods of Examining Thin-Wall Steel Structures]. Privolzhskiy nauchnyy zhurnal [Volga Scientific Journal]. 2007, no. 1, pp. 28—33.
  7. Kretinin A.N., Krylov I.I. Osobennosti raboty tonkostennoy balki iz gnutykh otsinkovannykh profiley [Operation Features of Thin-wall Beam Made of Roll-Formed Zink-Coated Sections]. Izvestiya vysshikh uchebnykh zavedeniy. Stroitel'stvo [News of Institutions of Higher Education. Engineering]. 2008, no. 6, pp. 1—11.
  8. Hartmut Pasternak and John Ermopoulos. Design of Steel Frames with Slender Joint-panels. Journal of Constructional Steel Research. 1995, vol. 35, no. 2, pp. 165—187.
  9. Kesti J. Local and Distortional Buckling of Perforated Steel Wall Studs. Dissertation for the Degree of Doctor of Science in Technology. Espoo, 2000, 101 p. + app.19 p.
  10. Markku Heinisuo. Comparative Study of Multiple Criteria Decision Making Methods for Building Design. Advanced Engineering Informatics. October 2012, vol. 26, no. 4, pp. 716—726.
  11. Tusnin A.R. Chislennyy raschet konstruktsiy iz tonkostennykh sterzhney otkrytogo profilya [Numerical Calculations of the Structures Made of Thin-Wall Shanks of Open Profile]. Moscow, ASV Publ., 2009, 143 p.
  12. Tusnin A.R. Osobennosti chislennogo rascheta konstruktsiy iz tonkostennykh sterzhney otkrytogo profilya [Features of Numerical Calculations of the Structures Made of Thin-Wall Shanks of Open Profile]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering]. 2010, no. 11, pp. 60—63.
  13. Perel'muter A.V., Slivker V.I. Raschetnye modeli sooruzheniy i vozmozhnost' ikh analiza [Calculation Models of Structures and Possibilities of Their Analysis]. Moscow, DMK Press Publ., 2002, 618 p.
  14. Slivker V.I. Stroitel'naya mekhanika [Structural Mechanics]. Moscow, ASV Publ., 2005, 736 p.
  15. Perel'muter A.V., Kriksunov E.Z., Karpilovskiy V.S., Malyarenko A.A. Integrirovannaya sistema dlya rascheta i proektirovaniya nesushchikh konstruktsiy zdaniy i sooruzheniy SCAD Office [Integrated System for Calculation and Design of the Bearing Structuresnof Buildings in SCAD Office]. Novaya versiya, novye vozmozhnosti. Inzhenerno stroitel'nyy zhurnal [New Version, New Possibilities. Engineering Construction Journal]. 2009, no. 2, pp. 10—12.
  16. Kriksunov E.Z., Perel'muter A.V., Yurchenko V.V. Proektirovanie flantsevykh soedineniy ramnykh uzlov [Design of Flanfe Seams of Frame Nods]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering]. 2010, no. 2, pp. 33—37.
  17. Winter G. Light Gauge (Thin-Walled) Steel Structures for Building in the U.S.A. Preliminary Publication, 4th Congress of the International Association for Bridge and Engineering, 1952, p. 524.
  18. Pekoz T. Development of a Unified Approach to the Design of Cold-formed Steel Members. Research Report CF 87-1, American Iron and Steel Institute, 1987.
  19. Hancock G.J. Light Gauge Construction. Progress in Structural Engineering and Materials. 1997, pp. 25—26.
  20. Gioncu V. General theory of coupled instabilities. Thin-Walled Structures, 1994, p. 19(2—4).
  21. Belyy G.I., Astakhov I.V. Issledovanie vliyaniya razlichnykh faktorov na prostranstvennuyu ustoychivost' sterzhnevykh elementov iz kholodnognutykh profiley [Research on the Influence of Various Factors on Spatial Stability of Axial Elements Made of Cold-Formed Profiles]. Aktual'nye problemy sovremennogo stroitel'stva: Doklady 68-y nauchnoy konferentsii professorov, prepodavateley, nauchnykh rabotnikov, inzhenerov i aspirantov universiteta [Current Issues of Contemporary Engineering: Reports of the 68th Scientific Conference of the Professors, Lecturers, Research Workers, Engineers and Postgraduate Students of the University]. Saint Petersburg, SPbGASU Publ., 2011, p. 27.
  22. Belyy G.I. Raschet uprugoplasticheskikh tonkostennykh sterzhney v poprostranstvenno-deformiruemoy skheme [Calculation of Thin-Wall Elastic-Plastic Shank in Spatial Deformable Scheme] Stroitel'naya mekhanika sooruzheniy: mezhvuzovskiy tematicheskiy sbornik trudov [Structural Mechanics of Buildings: Interuniversity Thematical Collection of Works]. LISI. 1983, no. 42, pp. 40—48.
  23. Cheng Y., Schafer B.W. Simulation of Cold-formed Steel Beams in Local and Distortional Buckling with Applications to the Direct Strength Method. Journal of Constructional Steel Research. 2007, vol. 63, no. 5, pp. 581—590.
  24. Rasmussen K.J.R. Experimental Investigation of Local-overall Interaction Buckling of Stainless Steel Lipped Channel Columns. Journal of Constructional Steel Research. 2009, vol. 65, no. 8—9, pp. 1677—1684.
  25. Smaznov D.N. Ustoychivost' pri szhatii sostavnykh kolonn, vypolnennykh iz profiley iz vysokoprochnoy stali [Stability in Compression of Composite Columns Made of High-tension Steel Profiles]. Inzhenerno stroitel'nyy zhurnal [Engineering Construction Journal]. 2009, no. 3, pp. 42—49.
  26. Smaznov D.N. Konechno-elementnoe modelirovanie stoek zamknutogo secheniya iz kholodnognutykh profiley [Finite Element Modeling of the Stands of Closed Section Made of Cold-formed Profiles]. Nauchno-tekhnicheskie vedomosti Sankt-Peterburgskogo gosudarstvennogo politekhnicheskogo universiteta [Scientific and Research News of Saint Petersburg State Polytechnic University]. 2011, no. 123, pp. 334—337.

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Mathematical modeling of the emission of heavy metals into water bodies from building materials derived from production waste

Vestnik MGSU 1/2016
  • Pugin Konstantin Georgievich - Perm National Research Polytechnic University (PNRPU) Candidate of Technical Sciences, Associate Professor, Department of Automobiles and Production Machines, Perm National Research Polytechnic University (PNRPU), 29 Komsomol’skiy prospekt, Perm, 614990, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Vaysman Yakov Iosifovich - Perm National Research Polytechnic University (PNRPU) Doctor of Medical Sciences, Professor, Scientific Supervisor, Department of Environmental Protection, Perm National Research Polytechnic University (PNRPU), 29 Komsomol’skiy prospekt, Perm, 614990, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Boyarshinov Mikhail Gennad’evich - Perm National Research Polytechnic University (PNRPU) Doctor of Technical Sciences, Professor, Department of Automobiles and Production Machines, Perm National Research Polytechnic University (PNRPU), 29 Komsomol’skiy prospekt, Perm, 614990, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 105-117

At the present time industrial waste is considered to be an alternative to primary natural resources when producing construction materials and products. The use of industrial waste in the construction branch allows reducing ecological load on the environment and population as a result of reducing the amount of unrecyclable waste and reducing the use of primary natural resources. Though when involving waste products as raw material in the preparation of building materials there occur environmental risks of anthropogenic impact increase on the environment. These risks are related to possible emission of heavy metals from construction materials in use. The article describes a tool which allows predicting this issue, depending on the acidity of the medium, the residence time of the material in the environment. The experimental data obtained in determining the migration activity of metals from cement concretes to aqueous solutions served as the basis for the mathematical model. The proposed model allows us to make a prediction of anthropogenic impact on the environment and commensurate this impact with the possibility of assimilation of the environment area where the building materials are applied. This will allow conducting an effective assessment of the created and applied technologies of waste disposal, taking into account the operating conditions of the materials produced.

DOI: 10.22227/1997-0935.2016.1.105-117

References
  1. Dijkstra J.J., Meeusse J.C.L., Van der Sloot H.A., Comans R.N.J. A Consistent Geochemical Modelling Approach for the Reactive Transport of Major and Trace Elements in MSWI Bottom Ash. Appl. Geochem. 2008, no. 23 (6), pp. 1544—1562. DOI: http://dx.doi.org/10.1016/j.apgeochem.2007.12.032.
  2. Eikelboom E., Ruwiel E., Goumans J.J.J.M. The Building Materials Decree: An Example of a Dutch Regulation Based On the Potential Impact of Materials on the Environment. Waste Manage. (Oxford). 2001, no. 21 (3), pp. 295—302.
  3. Fthenakis V., Wang W., Kim C.H. Life Cycle Inventory Analysis of the Production of Metals Used in Photovoltaics. Renew. Sustain. Energy Rev. 2009, no. 13 (3), pp. 493—517. DOI: http://dx.doi.org/10.1016/j.rser.2007.11.012.
  4. Quintelas C., Rocha Z., Silva B. et al. Removal of Cd(II), Cr(VI), Fe(III) and Ni(II) From Aqueous Solutions by an E. Coli Biofilm Supported on Kaolin. Chem. Engineering J. July 2009, 149, 1-3, pp. 319—324. DOI: http://dx.doi.org/10.1016/j.cej.2008.11.025.
  5. Jackobsen H., Kristoferrsen M. Case Studies on Waste Minimization Practices in Europe / Topic Report — European Topic Centre on Waste. European Environment Agency, February 2002, no. 2.
  6. Pugin K.G. Voprosy ekologii ispol’zovaniya tverdykh otkhodov chernoy metallurgii v stroitel’nykh materialakh [Ecological Problems of Iron Industry Solid Waste in Construction Materials]. Stroitel’nye materialy [Construction Materials]. 2012, no. 8, pp. 54—56. (In Russian)
  7. Pugin K.G., Vaisman Y.I. Methodological Approaches to Development of Ecologically Safe Usage Technologies of Ferrous Industry Solid Waste Resource Potential. World Applied Sciences Journal (Special Issue on Techniques and Technologies). Berlin, Springer, 2013, no. 22, pp. 28—33. DOI: http://dx.doi.org/10.5829/idosi.wasj.2013.22.tt.22135.
  8. Pugin K.G., Mal’tsev A.V. Issledovanie vozmozhnosti pererabotki metallurgicheskikh shlakov v Permskom krae putem proizvodstva trotuarnoy plitki [Investigation of the Possibilities of Smelter Slag Recycling in Perm Region by Producing Paving Flags]. Fundamental’nye issledovaniya [Fundamental Research]. 2013, no. 1—2, pp. 419—421. (In Russian)
  9. Kendall Alissa, Keoleian Gregory A., Lepech Michael D. Materials Design for Sustainability through Life Cycle Modeling of Engineered Cementitious Composites. Materials and Structures. 2008, vol. 41, no. 6, pp. 1117—1131. DOI: http://dx.doi.org/10.1617/s11527-007-9310-5.
  10. Bhander G.S., Christensen T.H., Hauschild M.Z. EASEWASTE — Life Cycle Modeling Capabilities for Waste Management Technologies. Int. J. Life Cycle Assess. 2010, 15,pp. 403—416.
  11. Gabler H.E., Gluh K., Bahr A., Utermann J. Quantification of Vanadium Adsorption by German Soils. J. Geochem. Explor. 2009, 103 (1), pp. 37—44. DOI: http://dx.doi.org/10.1016/j.gexplo.2009.05.002.
  12. Pugin K.G. Tyazhelye metally v otkhodakh chernoy metallurgii [Heavy Metals in Iron Industry Waste]. Molodoy uchenyy [Young Scientist]. 2010, no. 5—1, pp. 135—139. (In Russian)
  13. Batrakova G.M., Boyarshinov M.G., Goremykin V.D. Model’ dlya rascheta rasseivaniya emissii s territorii zakhoroneniya tverdykh bytovykh otkhodov [Calculation Model of Emission Dissipation from the Territory of Household Solid Waste Disposal]. Geoinformatika [Geoinformatics]. 2005, no. 2, pp. 43—49. (In Russian)
  14. Batrakova G.M., Boyarshinov M.G., Tashkinova I.N. Metodika matematicheskogo modelirovaniya biorazlozheniya nitrobenzola i anilina v pochve [Methods of Mathematical Simulation of Biodeterioration of Nitrobenzene and Aniline in the Ground]. Fundamental’nye issledovaniya [Fundamental Research]. 2014, no. 12—9, pp. 1855—1861. (In Russian)
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  16. Fedosov S.V., Rumyantseva V.E., Khrunov V.A., Aksakovskaya L.N. Modelirovanie massoperenosa v protsessakh korrozii betonov pervogo vida (malye znacheniya chisla Fur’e) [Simulating Mass Transfer in the Process of Concretes Corrosion of the First Type (Small Values of Fourier Number)]. Stroitel’nye materialy [Construction Materials]. 2007, no. 5,pp. 70—71. (In Russian)
  17. Fedosov S.V., Rumyantseva V.E., Kas’yanenko N.S., Krasil’nikov I.V. Teoreticheskie i eksperimental’nye issledovaniya protsessov korrozii pervogo vida tsementnykh betonov pri nalichii vnutrennego istochnika massy [Theoretical and Experimental Investigations of the Corrosion Processes of the First Type of Cement Concretes with the Availability of Internal Mass Source]. Stroitel’nye materialy [Construction Materials]. 2013, no. 6, pp. 44—47.(In Russian)
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Mathematical simulation of the cargoes delivery on an extensive network of automobile roads

Vestnik MGSU 7/2014
  • Khayrullin Rustam Zinnatullovich - Moscow State University of Civil Engineering (MGSU) Doctor of Physical and Mathematical Sciences, Professor, Department of Higher Mathematics, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe Shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 184-191

The problem of calculation of an optimal route is important for companies, including civil engineering companies, wishing to reduce transportation costs of cargoes delivery. The existing regional distribution network of automobile roads is characterized, as a rule, by an extensive network of roads of varying quality, traffic capacity, large distances between consignors and consignees, small warehouse areas, disabled vehicle fleet. In this way companies seek to increased profits by means of solving complex problems such as: reducing the costs of transportation and storage of cargoes, reducing the number of vehicles fleet, using optimal vehicles schedule. Note that in this paper, the term optimal is not used in the strict mathematical sense (optimal - which can’t be improved), but as an established business application in a term describing the effectiveness and efficiency of the process of cost reduction. Common formulation of cargoes delivery optimization problem from consignor to consignee by motor transport is offered. Mathematical models and methods of cargoes delivery on an extensive network of roads are provided. The method consists in gradual solving of three problems: the problem of dividing the region into zones detour in one trip, the traveling salesman problem and the problem of forming a daily job for each unit of vehicle. The software for solving this problem is developed. The software is based on the complex of developed algorithms and standard software tools. The software permits: to calculate the optimal (in terms of transport costs and time costs) routes, schedules and delivery schemes of cargoes from consignor to consignee; to perform the optimal choice of consignor for each consignee by means of calculation of the minimum total cost of the storage and cost of its delivery; to ensure optimal filling of order in time and to ensure a full loading of cargo motor vehicles. Some results of software implementation are described.

DOI: 10.22227/1997-0935.2014.7.184-191

References
  1. Smirnov M.I., Khayrullin R.Z. Sistema upravleniya dostavkoy tovarov s ispolzovaniem promezhutochnykh skladov [ Management System for Goods Delivery Using Intermediate Warehouses]. Izvestiya RAN. Teoriya i sistemy upravleniya [News of Russian Academy of Sciences. Theory and Control Systems]. 2002, no. 5, pp. 146—151.
  2. Smirnov M.I., Khayrullin R.Z. Matematicheskie modeli, ispol'zuemye v sisteme dostavki tovarov avtotransportom «Dispetcher» [Mathematical Models Used in the «Dispatcher» Automobile System of Goods Delivery]. Preprint Instituta prikladnoy matematiki im. M.V. Keldysha RAN [Preprint of the Institute of Applied Mathematics of the Russian Academy of Sciences Named after M.V. Keldysh]. 2002, no. 13, 22 p.
  3. Khayrullin R.Z. Tekhnologiya issledovaniya upravlyaemykh sistem [Research Technology for Controlled Systems]. Gornyy informatsionno-analiticheskiy byulleten' [Mining Informational and Analytical Bulletin]. 1999, no. 4, pp. 111—113.
  4. Guzairov M.B., Tarasova V.A. Optimizatsiya transportnykh potokov v seti postavok stroitel'nykh materialov [Optimization of Transport Flows in the Construction Materials’ Supply Network]. Sistemy upravleniya i informatsionnye tekhnologii [Control Systems and Information Technologies]. 2008, no. 3.1 (33), pp. 108—112.
  5. Gordienko L.V. Klassifikatsiya pretsedentov pri planirovanii logisticheskikh sistem v srede GIS [Classification of Cases in the Process of Logistics Systems Planning in GIS Environment]. Izvestiya YuFU. Tekhnicheskie nauki. Tematicheskiy vypusk: Gumanitarnye i informatsionnye tekhnologii v upravlenii ekonomicheskimi i sotsial'nymi sistemami [News of Southern Federal University. Technical Sciences. Special issue: «Humanitarian and Informational Technologies in Economic and Social Systems M anagement]. 2008, no. 10 (87), pp. 194—196.
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INFORMATION SUPPLY FOR SOLAR THERMAL SYSTEMS MATHEMATICAL MODELING

Vestnik MGSU 6/2017 Volume 12
  • Kitaytseva Elena Khalilovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Information Systems, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Konstantinova Daria Arkadyevna - Moscow State University of Civil Engineering (National Research University) (MGSU) postgraduate student, Information Systems, Technologies and Automation in Construction Department, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 687-691

Solar thermal system are its constituent elements with their connection between each other, thermal processes within them and also input/output data. The conjunction of external and internal factors determines the efficiency of solar thermal system. No excess heat as well as its deficiency displays us high level efficiency of system. The initial data for modeling of solar thermal systems functioning are dissimilar. Parameters of system’s equipment are constant. Solar radiation amount and water consumption are variable data. The more close initial data to reality, the more definite simulated result is. The main problem is in unpredictability of water consumption by the reason of daily regime and requirement of each user. In this way user is the most instable element of the system. In this study the input data for mathematical modeling of solar thermal systems was analyzed. The climatic databases and standard specifications of hot water demand were also analyzed. The operability estimation method for solar thermal systems with variable input data was offered. The extent of suitability of any solar thermal system can be defined by certain characteristic. The value of this characteristic displays energy accumulation process.

DOI: 10.22227/1997-0935.2017.6.687-691

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