IMPLEMENTATION OF DIAGNOSIS AND REPAIR OF BRIDGE STRUCTURES

Vestnik MGSU 6/2016
  • Yushkov Vladimir Sergeevich - Anapa branch of Kuban State Agrarian University (Anapa branch of KubSAU) Senior Lecturer, Department of Industrial and Civil Engineering, Anapa branch of Kuban State Agrarian University (Anapa branch of KubSAU), Krasnodarskiy kray, g. ul. 11 Chernomorskaya str., Anapa, 353440, the Krasnodar Territory, Russian Federation.
  • Kychkin Vladimir Ivanovich - Perm National Research Polytechnic University (PNRPU) Candidate of Technical Sciences, Associate Professor, Department of Automobiles and Technological Machines, Perm National Research Polytechnic University (PNRPU), 29 a Komsomol’skiy prospekt, Perm, 614990, Russian Federation.
  • Barmin Nikolay Dmitrievich - Perm National Research Polytechnic University (PNRPU) Associate Professor, Department of Automobiles and Technological Machines, Perm National Research Polytechnic University (PNRPU), 29 a Komsomol’skiy prospekt, Perm, 614990, Russian Federation.

Pages 118-125

Insufficiency and delays of maintenance of the technical state of bridges is greatly related to work labour input, absence of adequate mechanical means and automation of the process of inspection of structures. The authors considered domestic and foreign Machinery which repair bridge structures and are used to conduct surveys, tests and special repairs on different levels, both above and below the vehicle position. The design of a machine with the main operational characteristics is presented. The defects detected during the inspection of bridges are enumerated. In the conditions of deterioration of the bridges of different structures and responding the requirements to reduce the risk level of engineering structures’ operation there is a demand in renewing the population of machines for investigation of the technical condition of automobile bridge, because of special vehicles deterioration, there is no staff of specialists who are able to solve the problems of maintenance and increasing the reliability of bridge structures to the required extend. Also the main principles of control and inspection of bridge structures include the requirements to technical equipment for measurements and testing equipment.

DOI: 10.22227/1997-0935.2016.6.118-125

References
  1. Alekseev V.M., Novodzinskiy A.L. Otsenka tekhnicheskogo sostoyaniya mostov Permskoy oblasti [Evaluation of the Technical State of Bridges Perm Region]. Aktual’nye problemy avtomobil’nogo, zheleznodorozhnogo, truboprovodnogo transporta v Ural’skom regione :materialy mezhdunarodnoy nauchno-tekhnicheskoy konferentsii (1—3 dekabrya 2005 g.) [Current Problems of Road, Rail and Pipeline Transport in the Ural Region: Materials of the International Science and Technology Conference (December 1—3, 2005)]. Perm, PGTU Publ., 2005, pp. 70—74. (In Russian)
  2. Kychkin V.I., Yushkov V.S. Informatsionnye tekhnologii organizatsii inspektsionnykh marshrutov mobil’nykh remontnykh masterskikh [Information Technologies for Organization of Inspection Routes of Mobile Repair Shops]. Stroitel’nye i dorozhnye mashiny [Construction and Road Building Machinery]. 2015, no. 8, pp. 30—33. (In Russian)
  3. AASHTO Standard Specifications for Transportation Materials and Methods of Sampling and Testing. 23rd Edition. Part 2B. T321-03: Determining the Fatigue Life of Compacted Hot-Mix Asphalt (HMA) Subjected to Repeated Flexural Bending, AASHTO, Washington, D.C, 2003.
  4. Dobrogorskiy V.F. Novyy kran dvoynogo naznacheniya [New Crane of Dual Purpose]. Stroitel’nye i dorozhnye mashiny [Construction and Road Building Machinery]. 1994, no. 6, pp. 24—26. (In Russian)
  5. Nikolaychuk K. Avariynye mosty Rossii [Emergency Bridges in Russia]. Avtomobil’nye dorogi [Automobile Roads]. 1992, no. 11—12, pp. 15—16. (In Russian)
  6. Yushkov V.S., Kychkin V.I., Barmin N.D. Novyy kabel’nyy kran na shassi gruzovogo avtomobilya [New Cable Crane on a Truck Chassis]. Stroitel’nye i dorozhnye mashiny [Construction and Road Building Machinery]. 2015, no. 9, pp. 37—41. (In Russian)
  7. EN 12697-26. Bituminous Mixtures — Test Methods for Hot Mix Asphalt — Part 26: Resistance to Fatigue. 2004.
  8. Alppivuori K., Leppanen A., Anila M. and Makela K. Road Traffic in Winter : Summary of Publications in the Research Program. Helsinki, Finnish National Road Administration, 1995.
  9. Design of Concrete Bridge Deck Rehabilitation. Best Practice Guideline. Alberta Transportation. Canada, January 2003. Available at: http://www.transportation.alberta.ca/Content/docType30/Production/BPG4.pdf.
  10. Seim C., Ingham T. Influence of Wearing Surfacing on Performance of Orthotropic Steel Plate Decks. Transportation Research Record: Journal of Transportation Research Board. 2004, no. 1892, p. 98. DOI: http://dx.doi.org/10.3141/1892-11.
  11. Ovchinnikov I.G., Ovchinnikov I.I., Telegin M.A., Khokhlov S.V. Primenenie asfal’tobetonnykh pokrytiy na mostakh (inostrannyy opyt) [Application of Asphalt Concrete Pavement on Bridges (Foreign Experience)]. Transport, transportnye sooruzheniya. Ekologiya [Transport. Transport Facilities. Ecology]. 2014, no. 1, pp. 110—131. (In Russian)
  12. Timofeev D.R., Timofeev D.D. Usilenie mostovykh konstruktsiy s ispol’zovaniem kompozitsionnykh materialov [Strengthening of Bridge Structures Using Composite Materials]. Aktual’nye problemy avtomobil’nogo, zheleznodorozhnogo, truboprovodnogo transporta v Ural’skom regione : materialy mezhdunarodnoy nauchno-tekhnicheskoy konferentsii (1—3 dekabrya 2005 g.) [Current Problems of Road, Rail and Pipeline Transport in the Ural Region: Materials of the International Science and Technology Conference (December 1—3, 2005)]. Perm, PGTU Publ., 2005, pp. 45—51. (In Russian)
  13. Hicks R.G., Ian J. Dussek, Charles Seim. Asphalt Surfaces on Steel Bridge Decks. Transportation Research Record. 2000, vol. 1740, pp. 135—142. DOI: http://dx.doi.org/10.3141/1740-17.
  14. Hulsey J.L., Liao Yang, Lutfi Raad. Wearing Surfaces for Orthotropic Steel Bridge Decks. Transportation Research Record. 1999, vol. 1654, p. 141. DOI: http://dx.doi.org/10.3141/1654-17.
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  16. Polozhenie o sluzhbe laboratornogo kontrolya Rosavtodora [Regulation on the Service of the Laboratory Control Rosavtodor]. Moscow, 2002, 120 p. (In Russian)
  17. EN 13653:2004. Flexible Sheets for Waterproofing — Waterproofing of Concrete Bridge Decks and Other Concrete Surfaces Trafficable by Vehicles — Determination of Shear Strength. 2005, 10 p.
  18. Leppanen A. Final Results of Road Traffic in Winter Project: Socioeconomic Effects of Winter Maintenance and Studded Tires. Transportation Research Record 1533, TRB, National Research Council, Washington, D.C., 1996, pp. 27—31. DOI: http://dx.doi.org/10.3141/1533-04.
  19. Kychkin V.I., Yushkov V.S. Osnovy proektirovaniya intellektual’nykh platform dorozhnykh laboratoriy [Basics of Designing Intelligent Platforms of Road Laboratories]. Perm, OT i DO Publ., 2014. 146 p. (In Russian)
  20. VSN 4-81 (90). Instruktsiya po provedeniyu osmotrov mostov i trub na avtomobil’nykh dorogakh [VSN 4-81 (90). Instructions for Inspection of Bridges and Pipes on Automobile Roads]. (In Russian)

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USING TEMPERATURE TRACES IN NON-DESTRUCTIVE DIAGNOSTICS OF RESIDUAL STRESSES OF WELDED JOINTS

Vestnik MGSU 8/2012
  • Popov Aleksandr Leonidovich - Institute for Problems in Mechanics RAS (IPMekh RAN) Doctor of Physical and Mathematical Sciences, Professor, leading research worker, Institute for Problems in Mechanics RAS (IPMekh RAN), 101-1 Prospekt Vernadskogo, Moscow, 119526, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kurov Dmitriy Andreevich - Institute for Problems in Mechanics of the Russian Academy of Sciences graduate student, Laboratory of Mechanics of Strength and Destruction of Materials and Structures 8 (495) 434-35-65, Institute for Problems in Mechanics of the Russian Academy of Sciences, Building 1, 101 Prospekt Vernadskogo, Moscow, 119526, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 143 - 146

Diagnostics of residual welding stresses based on the layout of temperature traces that (i)
characterize isothermals of maximal temperatures within a thermal cycle of welding and (ii) are
retained on the metal surface of a welded joint represents a prospective trend of non-destructive
methods of control of residual stresses. The traces to be examined include both natural (temper colours
and fusion boundaries) and artificial traces formed on the metal surface in the course of fusion
of pre-applied temperature indication lines (lines of temperature indication markers, etc.).
The layout of temperature traces assures the uniqueness of the solution to an inverse problem
of a thermal cycle of welding reconstructed by the researcher. The kinetic pattern of alterations of
the stress-deformation state (SDS) of a welded joint in the course of welding, as well as the pattern
of residual stresses (the latter solely require the information concerning the cooling stage of a thermal
cycle) can be identified on the basis of the reconstructed thermal cycle model.
In the paper, the procedure of reconstruction of a thermal cycle on the basis of temperature
traces is exemplified by resistance flash-butt welds of metal rods. Despite the one-dimensionality of
the model, it presents a widespread type of welding of rails and accessories of building structures;
this type of welding is used to connect edges of steel pipes, including those that have a big diameter
and are used as underwater gas pipelines. Residual welding stresses of joint welds and the adjacent
area can be identified with the help of a thermal marker.

DOI: 10.22227/1997-0935.2012.8.143 - 146

References
  1. Gatovskiy K.M., Karkhin V.A. Teoriya svarochnykh napryazheniy i deformatsiy [Theory of Welding Stresses and Deformations]. Leningrad, LKI Publ., 1980, 331 p.
  2. Frolov V.V., editor. Teoriya svarochnykh protsessov [Theory of Welding Processes]. Vyssh. Shk. Publ., 1988, 559 p.
  3. Karkhin V.A., Khomich P.N., Fedotov B.V., Rayamyaki P. Analiz termicheskikh tsiklov pri kontaktnoy stykovoy svarke stali oplavleniem [Analysis of Thermal Cycles in the Course of Steel Contact Flash Welding]. Svarochnoe proizvodstvo [Welding Engineering]. 2008, no. 1, pp. 12—17.
  4. Tsai N.S. and Eagar T.W. Selection of Processes for Welding Steel Rails. Proc. in Railroad Rail Welding, Railway Systems and Management Assoc. Northfi eld, NJ, 421, 1985, pp. 421—435.

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Estimation of activity of air in the cyclotron bunker for PET diagnostics

Vestnik MGSU 1/2012
  • Voskanjan Karen Varuzhanovich - Moscow State University of Civil Engineering (MSUCE) Lecturer Department of Construction of Nuclear Facilities +7(926)1494825, Moscow State University of Civil Engineering (MSUCE), 26, Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Lavdanskiy Pavel Aleksandrovich - Moscow State University of Civil Engineering (MSUCE) Doctor of Engineering, Professor, Department of Construction of Nuclear Facilities +7(926)9104051, Moscow State University of Civil Engineering (MSUCE), 26, Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Solovev Vitaliy Nikolaevich - Moscow State University of Civil Engineering (MSUCE) Doctor of Engineering, Professor, Department of Construction of Nuclear Facilities +7(916)0143218, Moscow State University of Civil Engineering (MSUCE), 26, Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sichev Boris Sergeevich - Moscow Radiotechnical Institute of Russian Academy of Sciences Doctor of Engineering, Department head +7-(499)-616-39-54, Moscow Radiotechnical Institute of Russian Academy of Sciences, 132, Varshavskoe shosse, Moscow, Russia, 117519; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 119 - 121

The paper presents the results of the estimation of air activation by argon-41 induced by accelerated protons in 18 MeV Cyclotron. It has been demonstrated that activity of air is below significant minimum at proton current of 150 microamps.

DOI: 10.22227/1997-0935.2012.1.119 - 121

References
  1. Gordeev I.V., Kardashev D., Malyshev A.V. Jaderno-fizicheskie konstanty : spravochnik [Nuclear-physical constants : reference book], Gosatomizdat, Moscow, 1963.
  2. Beckurts K.H. and Wirtz K. Neutron Physics. Springer-Verlag NY.
  3. Price B.T., Horton C.C. and Spinney K.T. Radiation Shielding. Pergamon Press, New York, 1957.
  4. Broder D.L. and others. Beton v zashhite jadernyh ustanovok [Concrete in the protection of nuclear facilities. Ed. 2 nd.], Moscow, Atomizdat, 1973.

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