Stands for studies of personal protective equipment for people against falling from a height

Vestnik MGSU 8/2015
  • Stupakov Aleksandr Alekseevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, senior research worker, director, Scientific and Production Methodological Center “Industrial Alpinism”, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoye shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kapyrin Pavel Dmitrievich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, chair, Department of Mechanization of Construction, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoye shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Lelikov Georgiy Dmitrievich - Moscow State University of Civil Engineering (National Research University) (MGSU) research worker, Scientific and Production Methodological Center “Industrial Alpinism”, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoye shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Semenov Pavel Alekseevich - Moscow State University of Civil Engineering (National Research University) (MGSU) research worker, Scientific and Production Methodological Center “Industrial Alpinism”, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoye shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Vasilenko Vasiliy Vladimirovich - Moscow State University of Civil Engineering (National Research University) (MGSU) engineer, Scientific and Production Methodological Center “Industrial Alpinism”, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoye shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 130-139

With the increase of high-rise construction the volumes of high-rise services on maintenance and monitoring of high-rise buildings also grow. Construction and lifting-transport machines are being produced, which require maintenance on height. New types of work at height appear, which can only be done only by steeple jacks or industrial climbers. Analysis of accidents during high-rise services shows that often the use of unreliable means of protection against falls from a height or misuse of these means leads to emergency situations, as well as errors in the organization and technology of works performance at height. In this regard during the development of safe technologies for high-rise works, creation of new designs and types of personal protective equipment (PPE) against falls from heights and during their production, particular attention should be paid to reliability of these means, as well as the correctness of their use. In order to determine the reliability of personal protective equipment against falls from a height, as well as for certification of these means by the scientific and production methodological center “Industrial alpinism” of MGSU special stands were created for dynamic studies of these means. Dynamic characteristics are investigated by a falling cargo or dummy.

DOI: 10.22227/1997-0935.2015.8.130-139

References
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  4. Kapyrin P.D., Romanova E.C. Analiz sostoyaniya sovremennoy promyshlennosti stroitel’nykh materialov i faktory, sposobstvuyushchie razvitiyu proizvodstva [Analysis of Modern Building Materials Industry and the Factors Contributing to the Development of Production]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 4-1, pp. 165—170. (In Russian)
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  9. Eremeev V.B. Neschastnye sluchai v promyshlennom al’pinizme i verkholaznykh rabotakh: sistematizatsiya i analiz prichin [Accidents in Industrial Mountaineering and Steeplejack Works: Systematization and Analysis of the Causes]. Available at: http://alpsvet.ru/neschastnye-sluchai-v-promyslennom-alpinizme-i-verholaznyh-rabotah-sistematizatii-i-analiz-prichin/. Date of access: 18.05.2015. (In Russian)
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  14. Gustov Yu.I., Gustov D.Yu., Voronina I.V. Analiz zavisimostey dlya opredeleniya staticheskoy tverdosti metallicheskikh materialov konstruktsiy i tekhniki [Dependency Analysis for Defining Static Hardness of Metallic Materials of Structures and Equipment]. Mekhanizatsiya stroitel’stva [Mechanization of Construction]. 2015, no. 3 (849), pp. 38—40. (In Russian)
  15. Gustov Yu.I., Allattouf Н. Issledovanie prochnosti boltov po staticheskoy tverdosti dlya vosstanovleniya i usileniya stroitel’nykh konstruktsiy zdaniy [Study on Strength of Bolts on Static Hardness for the Restoration and Reinforcement of Building Structures of Buildings]. Mekhanizatsiya stroitel’stva [Mechanization of Construction]. 2015, no. 4 (850), pp. 41—43. (In Russian)
  16. Gustov D.Yu. Mashinostroitel’naya klimatologiya. Osnovy ucheta insolyatsii dlya analiza raboty gidroprivoda SDM [Engineering Climatology. Fundamentals of Accounting for Insolation for the Analysis of the Hydraulic Drive of Road-Building Machines]. Mekhanizatsiya stroitel’stva [Mechanization of Construction]. 2015, no. 1 (847), pp. 17—19. (In Russian)
  17. Stupakov A.A. Bezopasnost’ i opredelenie riskov raboty na vysote ot ispol’zovaniya strakhovochnogo oborudovaniya [Security and Identification of Risks at the Height while Safety Equipment]. Mekhanizatsiya stroitel’stva [Mechanization of Construction]. 2014, no. 11 (845), pp. 40—44. (In Russian)
  18. Crawford H. Survivable Impact Forces on Human Body Constrained by Full Body Harness. Available at: http://www.hse.gov.uk/research/hsl_pdf/2003/hsl03-09. Date of access: 18.05.2015.
  19. Eremeev V.B. Dopustimye sily ryvka na cheloveka v polnoy obvyazke [Survivable Impact Forces on Human Body Constrained by Full Body Harness]. Available at: http://www.alpsvet.ru/dopustimye-sily-ryvka-na-cheloveka-v-polnoi-obvizke-survivable-impact-forces-on-human-bod-y-constrained-by-full-body-harness/. Date of access: 18.05.2015.
  20. Stupakov A.A., Lelikov G.D. Raschet riskov ot ispol’zovaniya sredstv individual’noy zashchity ot padeniya s vysoty [Calculation of Risks Caused by the Use of Personal Protective Equipment Against Falls from Height]. Mekhanizatsiya stroitel’stva [Mechanization of Construction]. 2014, no. 12 (846), pp. 50—54. (In Russian)

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Behaviour of high stretch bolts in tension working as part of elements of steel structures, and their tendency to delayed fracturing

Vestnik MGSU 11/2014
  • Moyseychik Evgeniy Alekseevich - Novosibirsk State Universityof Architecture and Civil Engineering (NSUACE (Sibstrin)) Candidate of Technical Sciences, Associate Professor, Doctoral Student, Department of Metal and Wooden Structures, Novosibirsk State Universityof Architecture and Civil Engineering (NSUACE (Sibstrin)), 113 Leningradskaya str., Novosibirsk, 630008, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 58-67

In the article, the author has proven that manufacturing and installation errors, as well as contact deformations of high strength bolts, if analyzed as part of tensile connections of steel structures, work in eccentric tension. In pursuance of the effective state standards, the analysis of these bolts is based on the axial tension. The author has analyzed the failure of a steel structure, caused by the fracture of eccentrically loaded bolts made of steel grade XC 42 (France), or C40 (Germany), that later followed the delayed fracturing pattern. The author provides the findings of the lab tests, whereby the above bolts were tested in the presence of an angle washer. The author has also analyzed the findings of low-temperature tests of bolts in tension. The author demonstrates that the strength of high strength bolts is driven by the material, the structure shape, and the thermal treatment pattern. Eccentric tension tests of bolts have proven that cracks emerge in the areas of maximal concentration of stresses (holes in shafts, etc.) that coincide with the areas where fibers are in tension; cracks tend to follow the delayed fracturing pattern, and their development is accompanied by the deformation-induced metal heating in the fracture area. Therefore, the analysis of high strength bolts shall concentrate on the eccentric tension with account for contact-induced loads, while the tendency to delayed fracturing may be adjusted through the employment of both metallurgical and process techniques.

DOI: 10.22227/1997-0935.2014.11.58-67

References
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  2. Katyushin V.V. Zdaniya s karkasami iz stal'nykh ram peremennogo secheniya (raschet, proektirovanie, stroitel'stvo) [Building with Steel Frames of Variable Cross Section (Calculation, Design, Construction)]. Moscow, Stroyizdat Publ., 2005, 656 p. (In Russian).
  3. SP 16.13330.2011. Stal'nye konstruktsii. Aktualizirovannaya redaktsiya SNiP II-23—81* [Requirements SP 16.13330.2011. Steel Structures. The Updated Edition of Construction Rules SNIP II-23—81*]. Minregion Rossii [Ministry of Regional Development of Russia]. Moscow, OAO «TsPP» Publ., 2011, 178 p. (In Russian).
  4. Moyseychik E.A. Avarii sooruzheniy i ikh uchet pri nauchnom i normativnom obespechenii mostostroeniya [Crash of Structures and Accounting for Them in the Scientific and Regulatory Provision of Bridge Construction]. Avtomobil'nye dorogi i mosty [Highways and Bridges]. 2010, no. 1(5), pp. 109—114. (In Russian).
  5. Goritskiy V.M., Khromov D.P. Kachestvo i ekspluatatsionnaya nadezhnost' vysokoprochnykh boltov iz stali 40Kh «selekt» [Quality and Operational Reliability of High-strength Bolts of 40 "Select" Steel]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering]. 1999, no. 5, pp. 21—22. (In Russian).
  6. Goritskiy V.M., Guseva I.A., Sotskov N.I., Kulemin A.M. Ustanovlenie prichiny razrusheniya vysokoprochnykh boltov M30 klassa prochnosti 12.9 importnogo proizvodstva [Determining Destruction Causes of Imported High-Strength Bolts M30 of 12.9 Strength Class]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering]. 2009, no. 5, pp. 21—24. (In Russian).
  7. Fridman Ya.B. Mekhanicheskie svoystva metallov : v 2-kh chastyakh. Ch. 2. Mekhanicheskie ispytaniya. Konstruktsionnaya prochnost' [Mechanical Properties of Metals. In 2 parts. 3rd edition, revised and enlarged. Part 2. Mechanical Tests. Structural Strength]. Moscow, Mashinostroenie Publ., 1974, 368 p. (In Russian).
  8. Potak Ya.M. Khrupkie razrusheniya stali i stal'nykh izdeliy [Brittle Fracture of Steel and Steel Products]. Moscow, Oborongiz Publ., 1955, 389 p. (In Russian).
  9. Sil'vestrov A.V., Chibryakov G.G., Moyseychik E.A. Prochnost' boltov uzlovykh sopryazheniy strukturnykh konstruktsiy tipa «MArkhI» pri nizkikh temperaturakh [Strength Bolts for Interface Structural Designs of "MArkhI" Type at Low Temperatures]. Nadezhnost' konstruktsiy v ekstremal'nykh usloviyakh : sbornik nauchnykh trudov [Reliability of Structures under Extreme Conditions : Collection of Scientific Articles]. Yakutsk, YaGU Publ., 1984, pp. 77—82. (In Russian).
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  11. Lakhtin Yu.M. Metallovedenie i termicheskaya obrabotka metallov [Metallurgy and Heat Treatment of Metals]. 3rd edition. Moscow, Metallurgiya Publ., 1983, 360 p. (In Russian).
  12. Krutikova I.A., Panfilova L.M., Smirnov L.A. Issledovanie sklonnosti k zamedlennomu razrusheniyu vysokoprochnykh boltovykh staley, mikrolegirovannykh vanadiem i azotom [Investigation of Susceptibility to Delayed Fracture of High-strength Bolting Steels Microalloyed with Vanadium and Nitrogen]. Metallurg [Steel Worker]. 2010, no. 1, pp. 59—64. (In Russian).
  13. Chertov V.M. Tsinkovanie — odna iz prichin vodorodnoy khrupkosti vysokoprochnoy stali [Galvanizing — One of the Reasons of Hydrogen Embrittlement of High Strength Steel]. Tekhnologiya mashinostroeniya [Engineering Technology]. 2006, no. 2, pp. 11—14. (In Russian).
  14. Filippov G.A. Zakonomernosti yavleniya zamedlennogo razrusheniya vysokoprochnykh staley i sposoby povysheniya treshchinostoykosti stal'nykh izdeliy [Regularities of the Phenomenon of Delayed Fracture of High Strength Steels and Ways to Improve the Fracture Toughness of Steel Products]. Thesis of the Doctor of Technical Sciences. Moscow, TsNIIChM im. I.P. Bardina Publ., 1989, 43 p. (In Russian).
  15. Mishin V.M. Strukturno-mekhanicheskie osnovy lokal'nogo razrusheniya konstruktsionnykh staley : monografiya [Structural and Mechanical Bases of Local Fracture of Structural Steels: Monograph]. Pyatigorsk, Spetspechat' Publ., 2006, 226 p.
  16. Mishin V.M., Filippov G.A. Kriteriy i fiziko-mekhanicheskaya kharakteristika soprotivleniya stali zamedlennomu razrusheniyu [Criterion and Physical Mechanical Characteristics of Steel Resistance to Delayed Fracture]. Deformatsiya i razrushenie materialov [Deformation and Fracture of Materials]. 2007, no. 3, pp. 37—42. (In Russian).
  17. Mishin V.M., Filippov G.A. Kineticheskaya model' zamedlennogo razrusheniya zakalennoy stali [Kinetic Model of Delayed Fracture of Hardened Steel]. Problemy chernoy metallurgii i materialovedeniya [Problems Ferrous Metallurgy and Materials Science]. 2008, no. 3, pp. 28—33. (In Russian).
  18. Shikhovtsov A.A., Mishin V.M. Kinetika i mikromekhanika zamedlennogo razrusheniya stali [Kinetics and Micromechanics of Delayed Steel Fracture]. Fundamental'nye issledovaniya [Fundamental Research]. 2013, no. 4 (4), pp. 858—861. Available at: www.rae.ru/fs/?section=content&op=show_article&article_id=10000497. Date of access: 11.10.2014. (In Russian).
  19. Geoffrey L. Kulak, John W. Fisher, John H. A. Struik. Guide to Design Criteria for Bolted and Riveted Joints. Chicago, American Institute of Steel Construction, Inc, 2001, 333 p.
  20. Eliaz N., Shachar A., Tal B., Eliezer D. Characteristics of Hydrogen Embrittlement, Stress Corrosion Cracking and Tempered Martensite Embrittlement in High-strength Steels. Engineering Failure Analysis. 2002, no. 9, pp. 167—184. DOI: http://dx.doi.org/10.1016/S1350-6307(01)00009-7.
  21. Dayal R.K., Parvathavarthini N. Hydrogen Embrittlement in Power Plant Steels. Sadhana. June/August 2003, vol. 28, no. 3—4, pp. 431—–451. DOI: http://dx.doi.org/10.1007/BF02706442.

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EXPERIMENTAL AND THEORETICAL STUDIES OF THE STRESS-STRAIN STATE OF WOOD-CONCRETE AND WOOD-GYPSUM MASONRY

Vestnik MGSU 12/2012
  • Likhacheva Svetlana Yur'evna - Nizhniy Novgorod State University of Architecture and Civil Engineering (NNGASU) Candidate of Physical and Mathematical Sciences, Associate Professor, Department of Strength of Materials and Theory of Elasticity, Nizhniy Novgorod State University of Architecture and Civil Engineering (NNGASU), 65 Il'inskaya Str., Nizhny Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kondrashkin Oleg Borisovich - Nizhniy Novgorod State University of Architecture and Civil Engineering" (NNGASU) Candidate of Technical Sciences, Associate Professor, Department of Strength of Materials and Theory of Elasticity, Nizhniy Novgorod State University of Architecture and Civil Engineering" (NNGASU), 65 Il'inskaya Str., Nizhny Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Lebedev Mikhail Aleksandrovich - Nizhniy Novgorod State University of Architecture and Civil Engineering" (NNGASU) junior researcher, Nizhniy Novgorod State University of Architecture and Civil Engineering" (NNGASU), 65 Il'inskaya Str., Nizhny Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 61 - 65

Results of the theoretical analysis of experimental diagrams of deformations of columns made of wood sawdust and concrete mixtures and of wood sawdust and gypsum mixtures exposed to uniaxial compression are provided in the paper.
The findings of the prototype testing include identification of the two areas of deformations: areas of elastic deformations and areas of intensive development of deformations. The first area of partial elastic deformations is characterized by the linear stress function, while the second area demonstrates that this relationship is nonlinear. Permanent deformations appear as of the startup of the loading process and disproportionate stress is demonstrated throughout the deformation process. However, in the first area (partial elastic deformations) residual deformations are so small that this area is considered as the area of "the area of incomplete elasticity".

DOI: 10.22227/1997-0935.2012.12.61 - 65

References
  1. Tsepaev V.A., Lebedev M.A., Likhacheva S.Yu. Polzuchest’ kladki iz opilkobetona [Creep of the Wood Concrete Masonry Work]. Zhilishchnoe stroitel’stvo [Residential Housing Construction]. 2010, no. 3, pp. 25—27.
  2. Tsepaev V.A., Likhacheva S.Yu., Kondrashkin O.B. Dlitel’naya prochnost’ kladki iz gipso-opilochnykh kamney [Durability of Wood-gypsum Concrete Block Work]. Privolzhskiy nauchnyy zhurnal [Volga Region Scientific Journal]. 2009, no. 3, pp. 39—42.
  3. Tsepaev V.A., Likhacheva S.Yu., Shuryshev I.N. Kratkovremennaya prochnost’ kladki iz opilkobetonnykh kamney pri odnoosnom szhatii [ Short-term Strength of Sawdust Concrete Block Work Exposed to Uniaxial Compression]. Privolzhskiy nauchnyy zhurnal [Volga Region Scientific Journal]. 2009, no. 4, pp. 13—18.
  4. Tsepaev V.A. Dlitel’naya prochnost’ i deformativnost’ konstruktsionnykh drevesno–tsementnykh materialov i nesushchikh elementov na ikh osnove [Long-term Strength and Deformability of Structural Wood-concrete Materials and Bearing Elements Made on Their Basis]. Nizhniy Novgorod, NNGASU Publ., 2001, 480 p.
  5. Likhacheva S.Yu., Kondrashkin O.B. Issledovaniya protsessov deformirovaniya kladok na drevesnykh zapolnitelyakh pri odnoosnom kratkovremennom szhatii [Studies of Processes of Deformation of Masonry Work That Incorporate Wood Fillers If Exposed to Short-term Uniaxial Compression]. Privolzhskiy nauchnyy zhurnal [Volga Region Scientific Journal]. 2011, no. 1, pp. 21—25.
  6. Berg O.Ya. Nekotorye voprosy teorii deformatsiy i prochnosti betona [Some Issues of the Theory of Deformation and Strength of Concrete]. Izv. vuzov. Str-vo i arkhitektura [News of Institutions of Higher Education. Construction and Architecture]. 1967, no. 10, pp. 41—55.
  7. Mel’nichenko O.V. Eksperimental’noe issledovanie dlitel’noy prochnosti betonov vysokikh marok [Experimental Study of Long-term Strength of High-grade Concretes]. Izv. vuzov. Str-vo i arkhitektura [News of Institutions of Higher Education. Construction and Architecture]. 1976, no. 5, pp. 85—88.

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COMPARATIVE EVALUATION OF DETERMINATION OF PHYSICAL AND MECHANICAL PROPERTIES of HIGH-HOLLOW ceramic wall products on the basis of modern software systems

Vestnik MGSU 1/2017 Volume 12
  • Bedov Anatoliy Ivanovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Professor, Department of Reinforced Concrete and Stone Structures, Moscow State University of Civil Engineering (National Research University) (MGSU), 26, Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Gaysin Askar Miniyarovich - Ufa State Petroleum Technological University (USPTU) Candidate of Technical Sciences, Associate Professor, Department of Building Structures, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.
  • Gabitov Azat Ismagilovich - Ufa State Petroleum Technological University (USPTU) Doctor of Technical Sciences, Professor, Department of Building Structures, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.
  • Kuznetsov Dmitriy Valeryevich - Ufa State Petroleum Technological University (USPTU) Candidate of Technical Sciences, Associate Professor, Department of Building Structures, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.
  • Salov Aleksandr Sergeevich - Ufa State Petroleum Technological University (USPTU) Candidate of Technical Sciences, Associate Professor, Department of Highways and Technology of Construction Operations, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.
  • Abdulatipova Elena Midkhatovna - Ufa State Petroleum Technological University (USPTU) Doctor of Technical Sciences, Associate Professor, Professor of Department of Technological Machines and Equipment, Ufa State Petroleum Technological University (USPTU), Office 225, 195, Mendeleeva St., Ufa, 450062, Russian Federation.

Pages 17-25

Energy efficiency in construction is the main direction of energy saving in which the basic measure is to reduce heat losses through walling. In this regard, a particularly promising measure is an application of high-hollow multislot ceramic for external walls due to its predictable properties and reliability in operation. Range of high-hollow ceramic products currently manufactured in the Republic of Bashkortostan is considered in the article. Simulation and calculation of strength characteristics of high-hollow ceramic stones in the SCAD program system were performed, fracture model geometric parameters were obtained. Results of mechanical tests of high-hollow ceramic products are shown. The simulation and calculations performed in the SCAD program system with obtaining of geometric parameters of the fracture model made it possible to compare the convergence of calculation results with actual test results. Based on the results of the performed research it is concluded that the fracture model in the SCAD program system has practically coincided with the fracture pattern obtained in the process of experimental study of strength of high-hollow ceramic stones.

DOI: 10.22227/1997-0935.2017.1.17-25

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optimization for trenchless reconstruction of pipelines

Vestnik MGSU 1/2015
  • Zhmakov Gennadiy Nikolaevich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Water Disposal and Water Ecology, 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 .
  • Aleksandr Anatol’evich - Siberian Federal University (SibFU) Candidate of Technical Sciences, Associate Professor, Department of Mechanical Engineering, Siberian Federal University (SibFU), 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 63-73

Today the technologies of trenchless reconstruction of pipelines are becoming
more and more widely used in Russia and abroad. One of the most perspective is methods is shock-free destruction of the old pipeline being replaced with the help of hydraulic installations with working mechanism representing a cutting unit with knife disks and a conic expander. A construction of a working mechanism, which allows making trenchless reconstruction of pipelines of different diameters, is optimized and patented and its developmental prototype is manufactured. The dependence of pipeline cutting force from knifes obtusion of the working mechanisms. The cutting force of old steel pipelines with obtuse knife increases proportional to the value of its obtusion. Two stands for endurance tests of the knifes in laboratory environment are offered and patented.

DOI: 10.22227/1997-0935.2015.1.63-73

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