The approximate method of maximal tensile stress determination in rods of double-contour geodeticdomes of the system “R” exposed to dead load

Vestnik MGSU 1/2014
  • Lakhov Andrey Yakovlevich - Nizhny Novgorod State University of Architecture and Civil Engineering (NNGASU) Candidate of Technical Sci- ences, Associate Professor, Department of Information Systems and Technologies, Nizhny Novgorod State University of Architecture and Civil Engineering (NNGASU), 65 Ilyins- kaya st., 603950, Nizhny Novgorod, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 58-65

The article is a brief review of the research of stress-strain state of a structure that represents a hemispherical geodetic dome exposed to the dead load. Double-contour geodetic domes composed of plates and rods are the subject of the research. The process of their design has two stages: (a) design of geometric models of geodetic domes and (b) analysis of the domes.The author demonstrates that the first stage can be implemented through the employment of the library of ArchiCAD objects. Supplementary research is needed to have the second stage implemented. The objective of this research is to present the results of the research using computeraided methods of metal structures modeling.The article presents a study of the stress-strain state of a construction with a geodetic dome (shell) of the system “R” (classification of prof. G.N. Pavlov). The purpose of the paper is to present the results of numerical modeling in PATRAN/NASTRAN system in the form of approximate formulas. Approximate formulas are presented for calculation of global maximum of stress in second contour.

DOI: 10.22227/1997-0935.2014.1.58-65

References
  1. Pavlov G.N. Osnovnye kontseptsii avtomatizatsii arkhitekturnogo proektirovaniya geodezicheskikh kupolov i obolochek [Main Concepts of Architectural Design Automation of Geodetic Domes and Shells]. Izvestiya vuzov. Seriya «Stroitel'stvo» [News of Institutions of Higher Education. Construction Series]. 2005, no. 10, pp. 104—108.
  2. Pavlov G.N., Suprun A.N. Geodezicheskie kupola — proektirovanie na sovremennom urovne [Geodetic Domes – Up-to-date Design]. SAPR i grafika [CAD Systems and Graphics]. 2006, no. 3, pp. 25—27.
  3. Tupolev M.S. Geometriya sbornykh sfericheskikh kupolov [Geometry of Build-up Spherical Domes]. Arkhitektura SSSR [Architecture of the USSR]. 1969, no. 1, pp. 9—11.
  4. Fuller R.B. Geodesic Dome. Perspecta. 1952, no. 1, pp. 30—33.
  5. Vinogradov G.G. Raschet stroitel'nykh prostranstvennykh konstruktsiy [Analysis of Building Space Structures]. Moscow, Stroyizdat, Leningradskoe otd. Publ., 1990, 264 p.
  6. Suprun A.N, Dyskin L.M., Platov A.Yu., Lakhov A.Ya. Avtomatizirovannoe proektirovanie i raschet na prochnost' odnokonturnykh geodezicheskikh obolochek iz ploskikh elementov [Automated Design and Strength Analysis of Singe-contour Geodetic Shells Composed of Flat Elements]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 8, pp. 226—233.
  7. Andres M., Harte R. Buckling of Concrete Shells: a Simplified Numerical Approach. Journal of the International Association for Shell and Spatial Structures: IASS. 2006, vol. 47, no. 3, December n. 152, pp. 163—175.
  8. Lakhov A.Ya. Priblizhennyy sposob opredeleniya maksimal'nykh napryazheniy v geodezicheskikh odnokonturnykh kupolakh sistemy “P” ot vozdeystviya sobstvennogo vesa [The Approximate Method of Maximal Stress Determination in Single-contour Geodetic Domes of the System “P” Exposed to Dead Load]. Privolzhskiy nauchnyy zhurnal [Volga Region Scientific Journal]. 2013, no. 3, pp. 13—18.
  9. Skopinsky V.N. A Comparative Study of Three-dimensional and Two-dimensional Finite Element Analysis for Intersecting Shells. The Journal of Strain Analysis for Engineering Design. 2001, vol. 36. no. 3, pp. 313—322.
  10. Girling P.R. Geodesic Shells. Thesis of the Requirements for the Degree of M.A.Sc., the Department of Civil Engineering, University of British Columbia. 1957.
  11. Kubik M. Structural Analysis of Geodesic Domes. Final Year Project, Durham University, School of Engineering, April 29, 2009.
  12. Elkina V.N., Zagoruyko N.G., Timerkaev V.S. Algoritmy taksonomii v informatike [Algorithms of Taxonomy in Computer Science]. Informatika i ee problemy [Computer Science and its Problems]. 1972, no. 4, pp. 31—37.

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ALGORITHMS FOR CONSTRUCTING AND CALIBRATING ELECTRONIC MODELS OF WATER SUPPLY SYSTEM

Vestnik MGSU 7/2018 Volume 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.

Pages 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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Analysis of strength of monolithic beamless floors using the limitequilibrium method

Vestnik MGSU 7/2013
  • Kuznetsov Vitaliy Sergeevich - Mytishchi Branch, Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Architectural and Construction Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospect, Mytishchi, Moscow Region, 141006, Russian Federation; +7 (495) 583-07-65; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Talyzova Yulia Aleksandrovna - Mytishchi Branch, Moscow State University of Civil Engineering (MGSU) Assistant Lecturer, Department of Architectural and Construction Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospect, Mytishchi, Moscow Region, 141006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 51-58

The authors present features of the strength analysis of monolithic beamless floors, obtained using the limit equilibrium method. This method consists in the following procedure: a monolithic plate bends and breaks in the limit equilibrium under a uniformly distributed load. The influence of various combinations and dimensions of column sections on bending moments are considered. The influence of cross-sectional dimensions of columns on values of effective forces is analyzed in detail. The general equation to solve the strength problems of monolithic plates, having regular grids of columns exposed to continuous uniform loads, is derived and solved by the authors. This expression can be applied to calculate the span and support moments and to establish optimal reinforcement of plates. Results of calculations are presented in graphs that make it possible to derive interesting findings.

DOI: 10.22227/1997-0935.2013.7.51-58

References
  1. Timoshenko S.P., Voynovskiy-Kriger S. Plastinki i obolochki [Plates and Shells] Moscow, 1959, pp. 274—283.
  2. Nikonorov S.V., Tarasova O.A. Tekhnologiya rannego nagruzheniya monolitnykh perekrytiy pri ispol’zovanii balochno-stoechnoy opalubki [Technology of Early Loading of Monolithic Slabs Using Rack-girder Formwork]. Inzhenerno-stroitel’nyy zhurnal [Civil Engineering Journal]. 2010, no. 4. Available at: http://www.engstroy.spb.ru. Date of access: Dec. 5, 2012.
  3. Soudki Kh., El-Sayed A.K., Vanzwolc T. Strengthening of Concrete Slab-column Connections Using CFRP Strips. Journal of King Saud University Engineering Sciences. January 2012, vol. 24, no. 1, pp. 25—33. Available at: http://www. sciencedirect.com. Date of access: Apr. 10, 2013.
  4. Zenunovica D., Folic R. Models for Behavior Analysis of Monolithic Wall and Precast or Monolithic Floor Slab Connections. Engineering Structures. July 2012, vol. 40, pp. 466—478. Available at: http://www. sciencedirect.com. Date of access: Apr. 10, 2013.
  5. Dorfman A.E., Levontin L.N. Proektirovanie bezbalochnykh beskapitel’nykh perekrytiy [Design of Beamless Cap-free Floors]. Moscow, Stroyizdat Publ., 1975, pp. 11—22, 36—46.
  6. Shtaerman M.Ya., Ivyanskiy A.M. Bezbalochnye perekrytiya [Beamless Floors]. Moscow, 1953, pp. 47—64.
  7. Zolotkov A.S. Vibratsionnye ispytaniya fragmentov monolitnykh zdaniy do razrusheniya [Vibration Testing of Fragments of Monolithic Buildings to Fracture]. Inzhenerno-stroitel’nyy zhurnal [Civil Engineering Journal]. 2012, no 1. Available at: http://www.engstroy.spb.ru. Date of access: Dec. 5, 2012.
  8. Wieczorek M. Influence of Amount and Arrangement of Reinforcement on the Mechanism of Destruction of the Corner Part of a Slab-Column Structure. Proñedia Engineering. 2013, vol. 57, pp. 1260—1268. Available at: http://www. sciencedirect.com. Date of access: Apr. 10, 2013.
  9. Malakhova A.N. Usilenie monolitnykh plit perekrytiy zdaniy stenovoy konstruktivnoy sistemy [Strengthening Monolithic Slabs of Buildings Having Wall Structural Systems]. Nauchno-prakticheskiy Internet zhurnal «Nauka. Stroitel’stvo. Obrazovanie» [Science and Practical Journal “Science, Construction, Education”]. 2012, no. 4. Available at: http://www.nso-journal.ru. Date of access: March 31, 2013.
  10. Pogrebnoy I.O., Kuznetsov V.D. Bezrigel’nyy predvaritel’no napryazhennyy karkas s ploskim perekrytiem [Beamless Pre-stressed Frame Having a Flat Slab]. Inzhenerno-stroitel’nyy zhurnal [Civil Engineering Journal]. 2010, no 3. Available at: http://www.engstroy.spb.ru. Date of access: Dec. 5, 2012.
  11. Samokhvalova E.O., Ivanov A.D. Styk kolonny s bezbalochnym beskapitel’nym perekrytiem v monolitnom zdanii [Juncture of a Column and Beamless Cap-free Floors in a Monolithic Building]. Inzhenerno-stroitel’nyy zhurnal [Civil Engineering Journal]. 2009, no 3. Available at: http://www.engstroy.spb.ru. Date of access: Dec. 5, 2012.

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SCIENTIFIC APPROACHES TO CALCULATION AND DESIGN OF LARGE-SPAN STRUCTURES

Vestnik MGSU 2/2017 Volume 12
  • Sysoeva Elena Vladimirovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Buildings and Constructions Design, Moscow State University of Civil Engineering (National Research University) (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 131-141

The article presents the four stages of creation and development of the theory of plate and shell which led to the development of a mechanism of calculation of spatial structures of large span buildings and constructions on an advanced level. Each of the stages of the unique buildings calculation method development includes a description of the main achievements in the sphere of structural mechanics, the theory of elasticity and resistance of materials which became the basis for the modern theory of calculation of plates and shells. In the first stage the fundamentals of solid mechanics were developed; this is presented in works of such outstanding scientists as G. Galilei, J.-L. Lagrange, R. Hooke, L. Euler, Kirchhoff, A. Law etc. Development of the theory of plate and shell would be impossible without these works. But absence of such construction material as reinforced concrete did not enable engineers and architects to create a thin roof. Thickness of coverings was intuitively overstated to ensure durability of buildings. The second stage is interesting by formulation of the general theory of calculation of plate and shell and by transition from the working state analysis of structures to the limit state analysis. Beginning of use of reinforced concrete resulted in decrease of a roof thickness to the diameter of its base, compared to buildings made of stone and brick. The third stage is characterized by development of computational systems for calculation of strength, stability and oscillations of core and thin-walled spatial structures based on the finite element method (FEM). During this period a design of buildings and constructions with spans over 200 m with the use of metal was begun. Currently, or during the fourth stage, structures with the use of metal and synthetic materials for spans up to 300 meters are designed. Calculations of long-span buildings and structures are performed using FEM and taking into account different types of nonlinearity. Each stage selected from the history of construction is exemplified by completed projects, hereat characteristics of roofs indicating the applied construction material are given. Transition from natural stone to concrete, metal and synthetic materials in construction of large-span buildings is illustrated in the table. At the end of each stage the scientists’ and designers’ main achievements in the sphere of science, construction and engineering education are shown.

DOI: 10.22227/1997-0935.2017.2.131-141

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Ropeways. Analysis of standard and legal base

Vestnik MGSU 10/2014
  • Tseva Anna Viktorovna - Moscow State University of Civil Engineering (MGSU) assistant lecturer, Department of Architectural and Structural Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospekt, Mytishchi, Moscow Region, 141006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Giyasov Botir Iminzhonovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, chair, Department of Architectural and Construction Design, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7 (495) 287-49-14; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 7-15

The development of a new regulatory base in the field of ropeways construction in the Russian Federation is currently coming to an end. Federal legislation defines the following priorities: updating of Construction Norms and Regulations and state standard specifications, energy saving and energy efficiency, converging Russian and European Union standards (including standards for building design - Eurocodes). This work should be completed in 2014. Experience in designing and coordinating passenger ropeways projects may lead, after analyzing the current status of regulatory legal base, to the following suggestions: simplifying the order of ropeways registration and commissioning for the reduction in administrative resource; new regulatory base should include the links to appropriate Eurocodes (a list of which is provided in the article). Operating personnel and designers might also find useful clarifications on the application of Eurocodes and the links to the corresponding Russian normative documents, which regulate design, calculation and control of both the ropeway and its separate parts. Absence or under fulfillment of such rules (for example, as in the case of the method of calculating construction during various working/non-working ropeway modes) should lead to their further development, which may be carried out by a combined group of ropeway designers, ropeway technologists and other related specialists; expanding security rules for passenger, cargo and ski lift ropeways on other types of cable transport, such as APM-ATS systems, which may be used throughout the Russian Federation in the future.

DOI: 10.22227/1997-0935.2014.10.7-15

References
  1. Bovskiy G.N. Fragmenty istorii razvitiya kanatnykh dorog v nashey strane [History Fragments of the Development of Ropeways in our Country]. Bezopasnost' truda v promyshlennosti [Safety of Work in the Industry]. 2013, no. 4, pp. 86—88. (in Russian)
  2. Spravka po sblizheniyu (garmonizatsii) polozheniy osnovopolagayushchikh normativnykh dokumentov Rossiyskoy Federatsii s zarubezhnymi standartami, v tom chisle evropeyskimi [The Reference on Rapprochement (Harmonization) of the Provisions of Fundamental Normative Documents of the Russian Federation with Foreign Standards, Including European]. Tekhekspert: portal dlya proektirovshchikov [Technical Expert: Web Portal for Designers]. Available at: http://www.project-help.ru/assets/files/spravka.doc. Date of access: 15.11.2013. (in Russian)
  3. Basin E. Evrokody v Rossiyskoy Federatsii: printsip «Ne navredi!» [Eurocodes in the Russian Federation: the principle "Don't do harm!"]. Stroitel'stvo.ru : internet-zhurnal [Stroitel'stvo.ru: Internet Journal]. 2012, no. 12. Available at: http://www.rcmm.ru. Date of access: 15.11.2013. (in Russian)
  4. Commission communication in the framework of the implementation of the Directive 2000/9/EC of the European Parliament and of the Council of 20 March 2000 relating to cableway installations designed to carry persons (Publication of titles and references of harmonised standards under Union harmonisation legislation). Official Journal of the European Communities. 03.05.2000, L 106/21.
  5. Kazakova E. Nikolay Vecher: «Perekhod na evrokody sozdast na rossiyskom rynke bolee konkurentnuyu sredu» [Transition to Eurocodes will create more competitive environment in the Russian market]. Available at: http://www.estateline.ru/interviews/178/. Date of access: 15.11.2013. (in Russian)
  6. 2000/9/EG "Leitfaden für die Anwendung der Richtlinie 2000/9/EG des Europäischen Parlaments und des Rates vom 20. März 2000 über Seilbahnen für den Personenverkehr". Luxemburg, 2006, 155 p.
  7. Directive 2000/9/EC of the European Parliament and of the Council of 20 March 2000 relating to cableway installations designed to carry persons. Official Journal of the European Communities. 3.5.2000, L 106, pp. 21—48.
  8. Sotov I.N., Averin S.Yu. Poryadok polucheniya razreshitel'nykh dokumentov [Order of Obtaining Allowing Documents]. Gornolyzhnaya industriya Rossii [Ski Industry of Russia]. 2010, no. 3 (15), pp. 64—67. (in Russian)
  9. Bovskiy G. Aktual'nye voprosy ekspertizy [Topical Issues of Expert Examination]. Gornolyzhnaya industriya Rossii [Ski Industry of Russia]. 2010, no. 1 (13), pp. 40—42. (in Russian)
  10. Averin S.Yu. Zakonodatel'naya baza i poryadok registratsii kanatnykh dorog [Legislative Base and Procedure for Registration of Ropeways]. Gornolyzhnaya industriya Rossii [Ski Industry of Russia]. 2011, no. 5, pp. 30—33. (in Russian)
  11. Bovskiy G. Kanatnye dorogi [Ropeways]. Gornolyzhnaya industriya Rossii [Ski Industry of Russia]. 2007, no. 7, pp. 44—45. (in Russian)
  12. Kontseptsiya sozdaniya turisticheskogo klastera v Severo-Kavkazskom federal'nom okruge, Krasnodarskom krae i Respublike Adygeya [The Concept of Creating a Tourist Cluster in North Caucasus Federal District, Krasnodar Krai and the Republic of Adygea]. Moscow, 2011, 221 p. (in Russian)
  13. POMA. Lift Indefication Number S14580. Variant Indefication Number 4. Tower Calculation Note. 2010, 91 p.
  14. Ob utverzhdenii Federal'nykh norm i pravil v oblasti promyshlennoy bezopasnosti «Pravila bezopasnosti passazhirskikh kanatnykh dorog i funikulerov». Prikaz Rostekhnadzora ot 06.02.2014 № 42 [On Approval of Federal Norms and Regulations in the Field of Industrial Safety "Rules for Safe Operation of Passenger Ropeways and Cable Cars]. Konsul'tant plyus [Consultant Plus]. Available at: http://www.consultant.ru/document/cons_doc_LAW_163442/?frame=11. Date of access: 06.09.2014. (in Russian)
  15. Ob utverzhdenii Federal'nykh norm i pravil v oblasti promyshlennoy bezopasnosti «Pravila bezopasnosti gruzovykh podvesnykh kanatnykh dorog». Prikaz Federal'noy sluzhby po ekologicheskomu, tekhnologicheskomu i atomnomu nadzoru ot 22 noyabrya 2013 g. № 563 g. Moskva [On Approval of Federal Norms and Regulations in the Field of Industrial Safety "Rules for Safe Operation of Cargo Ropeways. Order of Federal Service for Environmental, Technological and Nuclear Supervision from November, 22 2013 no. 563, Moscow]. Rossiyskaya gazeta [Russian Newspaper]. 2014, March 3. Available at: http://www.rg.ru/2014/03/03/kanat-doroga-site-dok.html. Date of access: 06.03.2014. (in Russian)
  16. Las Vegas CityCenter APM. Automated Urban Transit. Automated transit sistem. Available at: http://www.leaelliott.com/automated-transit-systems.html#p40. Date of access: 06.03.14.
  17. People Mover. Venice, Italy. Doppelmayr Cable Car. Available at: http://www.dcc.at/files/sites/default/data/DCC/References/troncheto_piazzale_roma_schuttle_italy_press_release.pdf. Date of access: 06.03.14.
  18. Mandalay Bay Tram, Las Vegas, NV, USA Doppelmayr Cable Car. Available at: http://www.dcc.at/gallery/mandalay-bay-tram-las-vegas-usa/. Date of access: 06.03.14.
  19. Cabletren Bolivariano. Caracas, Venezuela. Doppelmayr Cable Car. Available at: http://www.dcc.at/gallery/cabletren-bolivariano-caracas-venezuela. Date of access: 06.03.14.
  20. Types of Ropeways. Leitner ropeways. Available at: http://en.leitner-ropeways.com/Infocenter/Types-of-Ropeways. Date of access: 06.03.14.

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METHOD OF CALCULATION OF THE ELEVATOR SPEED LIMITER WITH THE INERTIAL ROLLER

Vestnik MGSU 7/2016
  • Vitchuk Pavel Vladimirovich - Kaluga branch of Bauman Moscow State Technical University (Kaluga branch of BMSTU) Candidate of Technical Sciences, Associate Professor, Department of Machine Components and Lifting and Transporting Equipment, Kaluga branch of Bauman Moscow State Technical University (Kaluga branch of BMSTU), 2 Bazhenova str., Kaluga, 248000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Mokin Dmitriy Gennad’evich - Kaluga branch of Bauman Moscow State Technical University (Kaluga branch of BMSTU) Candidate of Technical Sciences, Associate Professor, Department of Machine Components and Lifting and Transporting Equipment, Kaluga branch of Bauman Moscow State Technical University (Kaluga branch of BMSTU), 2 Bazhenova str., Kaluga, 248000, Russian Federation.

Pages 134-141

The speed limiter is intended to actuate the safety gear excess of emergency overspeed of the car or the counterweight while moving down. In Russia, the most widespread speed limiters are centrifugal type with a horizontal axis of rotation. Their design and methods of calculation are well known and widely presented in the literature. In foreign practice the most often used speed limiters include inertial roller in their construction. In the domestic literature there is almost no description of such structures and principles of their calculation. In the given article the author describes the calculation and structural scheme of the speed limiter with inertial roller and an octagonal disk of Schindler Co. Equilibrium equation actuating lever relative to the axis of rotation is compiled. On the basis of the analysis of the equilibrium equation the basic principles and constituent elements of the calculation of the elevator speed limiter with inertial roller are discovered. These are: calculation of the lever system, calculation of the spring, calculation of the disk. The dependences of the path, speed and acceleration of the roller in time are given. It is convenient to design the disk surface with the use of computer applications. This eliminates a significant amount of computation. The design algorithm for disk surface on a computer is given. The example of design of disk surface using this algorithm is offered. The proposed considerations on building the speed limiter’s disk surface allow changing its profile in real time. This, together with the equilibrium equation allow designing speed limiters with an inertial roller in any possible configuration.

DOI: 10.22227/1997-0935.2016.7.134-141

References
  1. Volkov D.P., editor. Lifty [Elevators]. Moscow, ASV Publ., 1999, 479 p. (In Russian)
  2. Korneev G.K., Korotov M.G., Motsokheyn I.S., Zhdanov B.V. Lifty passazhirskie i gruzovye [Passenger and Service Elevators]. Moscow, Mashgiz Publ., 1958, 568 p. (In Russian)
  3. Volkov D.P., Ionov A.A., Chutchikov P.I. Atlas konstruktsiy liftov [Lift Design Atlas]. Moscow, ASV Publ., 2003, 156 p. (In Russian)
  4. Arkhangel’skiy G.G., Babichev S.D., Vaksman M.A., Kotel’nikov V.S. Gidravlicheskie lifty [Hydraulic Lifts]. Moscow, ASV Publ., 2002, 346 p. (In Russian)
  5. Ermishkin V.G., Nelidov I.K., Kokhanov K.P. Naladka liftov [Lift Adjustment]. Moscow, Stroyizdat Publ., 1990, 301 p. (ZhKKh. Biblioteka rabotnika zhilishchno-kommunal’nogo khozyaystva [Library of Housing and Utilities Infrastructure Worker]). (In Russian)
  6. Chutchikov P.I. Remont liftov [Lift Repair]. Moscow, Stroyizdat Publ., 1983, 271 p. (In Russian)
  7. Polkovnikov V.S., Gruzinov E.V., Lobov N.A. Montazh liftov [Lift Assembling]. 4th edition, revised and enlarged. Moscow, Vysshaya shkola Publ., 1981, 279 p. (Proftekhobrazovanie [Professional Technological Education]). (In Russian)
  8. Ermishkin V.G. Tekhnicheskoe obsluzhivanie liftov [Lift Maintenance]. Moscow, Nedra Publ., 1976, 326 p. (In Russian)
  9. Fedorova Z.M., Lukin I.F., Nesterov A.P. Pod”emniki [Elevators]. Kiev, Vishcha shkola Publ., 1976, 294 p. (In Russian)
  10. Vasil’ev M.I., Brodskiy M.G. Montazh liftov [Lift Assembling]. Moscow, Stroyizdat Publ., 1975, 225 p. (In Russian)
  11. Polkovnikov V.S., Lobov N.A., Gruzinov E.V., Brodskiy M.G. Montazh i ekspluatatsiya liftov [Lift Assembling and Maintenance]. 2nd edition, revised and enlarged. Moscow, Vysshaya shkola Publ., 1973, 327 p. (Proftekhobrazovanie : Stroitel’nye raboty [Professional Technical Education : Construction Works]). (In Russian)
  12. Pavlov N.G. Lifty i pod”emniki. Osnovy konstruirovaniya i rascheta [Lifts and Elevators. Basis of Design and Calculation]. Moscow, Leningrad, Mashinostroenie Publ., 1965, 203 p. (In Russian)
  13. Tushmalov V.A. Elektricheskie lifty: ustroystvo i montazh [Electric Lifts. Construction and Assembling]. Moscow, Mashgiz Publ., 1952, 179 p. (In Russian)
  14. Udod L.F. Passazhirskie i gruzovye pod”emniki (lifty) : Konstruktsiya i raschet [Elevators (Lifts) for Passengers and Goods : Structure and Calculation]. Khar’kov, Kiev, Gosudarstvennoe nauchno-tekhnicheskoe izdatel’stvo Publ., 1937, 314 p. (In Russian)
  15. Baranov A.P., Golutvin V.A. Pod”emniki [Elevators]. Tula, TulGU Publ., 2004, 150 p. (In Russian)
  16. Ioffe I.Ya. Vysokoskorostnye lifty [High Speed Lifts]. Moscow, Stroyizdat Publ., 1988, 95 p. (In Russian)
  17. Janovsky L. Elevator Mechanical Design. Ellis Horwood Ltd; 2 Sub edition, 1993, 250 p.

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Calculation of accumulated depreciation Pending construction of buildings and Constructions

Vestnik MGSU 1/2012
  • Shirokov Alexey Igorevich - Tula State University, LTD "Boniface" graduate student Urban Construction and Architectural tour, Director +7-920-744-95-46, Tula State University, LTD "Boniface", ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 149 - 152

In this article the author examines the influence of wear on the ONS to the quality and investment attractiveness, and gives recommendations on how to estimate the accumulated depreciation. A formula for calculating the market value of the ONS taking into account accumulated depreciation.

DOI: 10.22227/1997-0935.2012.1.149 - 152

References
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