INFORMATION SYSTEMS AND LOGISTICS IN CIVIL ENGINEERING

MATHEMATICAL AND INFORMATION SUPPORT OF HYDRAULIC EXPERIMENTS AT PIPELINES

Vestnik MGSU 5/2013
  • Orlov Vladimir Aleksandrovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Head of the Department of Water Supply and Waste Water Treatment, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Zotkin Sergey Petrovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Informatics and Applied Mathematics; +7 (495) 953-36-35, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Koblova Elena Viktorovna - Moscow State University of Civil Engineering (MGSU) postgraduate student; Department of Water Supply; 7 (495) 516-96-88., Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 214-219

The article contains summarized results of the research into developed software programme capable of processing findings of hydraulic experiments held at pressure pipelines (protective coatings). The authors describe the algorithm of the analysis procedure, sequential analysis, mathematical and hydro-mechanical modeling of the process of transformation of hydraulic values. The authors provide their concept of the dialog box and description of input and output information, as well as functions of the software programme at intermediate stages of the hydraulic analysis. Basic input information supplied into the hydraulic analysis software programme includes the pipeline, its inner diameter, length, and acceptable roughness error.Whenever a user presses the “display result” button, interim information is displayed on the screen and, if necessary, a set of output information is provided in the form of tables and graphs. The choice for the optimal solution is made on the basis of the minimum margin of error between experimental and analytical values of the pipe roughness.The findings may be useful to researchers involved in the study of hydraulic characteristics of pipelines made of various materials and to designers and builders engaged in renovation of sections of pipelines.

DOI: 10.22227/1997-0935.2013.5.214-219

References
  1. Khramenkov S.V. Strategiya modernizatsii vodoprovodnoy seti [Strategy for Modernization of a Water Supply Network]. Moscow, Stroyizdat Publ., 2005, 398 p.
  2. Orlov V.A., Orlov E.V., Pimenov A.V. Podkhody k vyboru ob”ekta renovatsii na truboprovodnoy seti, vosstanavlivaemoy polimernym rukavom [Approaches to the Choice of the Renovated Section of a Pipeline Restored by a Polymeric Sleeve]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 3, pp. 129—131.
  3. Zotkin S.P., Orlov V.A., Orlov E.V., Maleeva A.V. Algoritm i avtomatizirovannaya programma optimizatsii vybora metoda bestransheynogo vosstanovleniya napornykh i beznapornykh truboprovodov [Algorithm and Software Programme for Optimization of Choice for the Method of Trenchless Renovation of Pressure and Free-flow Pipelines]. Nauchnoe obozrenie [Scientific Review]. 2011, no. 4, pp. 61—65.
  4. Khurgin R.E., Orlov V.A., Zotkin S.P., Maleeva A.V. Metodika i avtomatizirovannaya programma opredeleniya koeffitsienta Shezi «S» i otnositel’noy sherokhovatosti «n» dlya beznapornykh truboprovodov [Methodology and Software Programme for Identification of Chezy Factor and Relative Roughness for Free-flow Pipelines]. Nauchnoe obozrenie [Scientific Review]. 2011, no. 4, pp. 54—60.
  5. Orlov V.A., Maleeva A.V. Vodootvodyashchie truboprovodnye seti. Vybor ob”ekta renovatsii na baze ranzhirovaniya destabiliziruyushchikh faktorov [Water Discharge Pipeline Networks. Choice of an Item to Be Renovated on the Basis of the Ranking of Destabilizing Factors]. Tekhnologii Mira [World Technologies]. 2011, no. 1, pp. 31—34.
  6. Kiselev P.G. Spravochnik po gidravlicheskim raschetam [Reference Book of Hydraulic Analysis]. Moscow, Energiya Publ., 1972, 312 p.
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  8. Shevelev F.A., Shevelev A.F. Tablitsy dlya gidravlicheskogo rascheta vodoprovodnykh trub. [Tables for Hydraulic Analysis of Water Supply Pipelines]. Moscow, Stroyizdat Publ., 1984, 117 p.
  9. Al’tshul’ A.D. Gidravlicheskie soprotivleniya [Hydraulic Resistances]. Moscow, Nedra Publ., 1970, 216 p.
  10. Prozorov I.V., Nikoladze G.I., Minaev A.V. Gidravlika, vodosnabzhenie i kanalizatsiya gorodov. [Hydraulics, Water Supply and Urban Sewage]. Moscow, Vyssh. shk. publ., 1975, 422 p.

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MODELING OF STRUCTURAL BEHAVIOUR OF AN INDUSTRIAL BUILDING WITH ACCOUNT FOR THE VARIATION OF RIGIDITY IN THE COURSE OF ITS OPERATION

Vestnik MGSU 10/2012
  • Zolina Tat'yana Vladimirovna - Astrakhan Institute of Civil Engineering (AISI) Candidate of Technical Sciences, Associate Professor, First Vice-Rector, Astrakhan Institute of Civil Engineering (AISI), 18 Tatishchev St., Astrakhan, 414056, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sadchikov Pavel Nikolaevich - State Autonomous Educational Institution of the Astrakhan area of higher education "Astrakhan State Architectural and Construction University" (JSC GAOU VPO "AGASU") Candidate of Technical Sciences, Associate Professor, Department of Automated Design and Modeling Systems, State Autonomous Educational Institution of the Astrakhan area of higher education "Astrakhan State Architectural and Construction University" (JSC GAOU VPO "AGASU"), 18 Tatishcheva str., Astrakhan, 414000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 69 - 76

The number of accidents at construction facilities has increased dramatically over the recent years. The engineering analysis of the reasons of accidents in the Russian Federation has revealed that the majority of accidents are caused by the loss of stability of specific structural elements, and a substantial reduction of the bearing capacity of structures. At the same time, no proper methodologies of processing and analyzing the results of inspections of structures, or methodologies of assessing the residual service life of structures are available, although advanced diagnostic tools are at hand. Therefore, advanced methods of accident risk analysis assume importance.
A quantitative assessment of the risk exposure of buildings and structures at any stage (design, construction and operation) can only be made through the employment of probabilistic calculations, especially if extreme loads are in the focus. Probabilistic methods are more robust as they evaluate the safety as the possibility of failure. Parameters are treated as stochastic variables.
Based on the research completed by the authors, a 3D computational model of a single-storey industrial building has been developed. The software programme developed by the authors is designated for the resolution of a wide range of problems of reliability, durability, stability and accident risk analysis in respect of buildings exposed to various internal and external loads.
The software may be used to resolve both direct and inverse problems. This feature is highly relevant in assessing structural behaviour. Their structures may constitute defects that affect their rigidity, strength and stability. The behaviour pattern of a loaded structure may be identified by means of an experiment, and thereafter, its rigidity may be identified by resolving the inverse problem in order to assess the life span of the structure.

DOI: 10.22227/1997-0935.2012.10.69 - 76

References
  1. Avarii zdaniy i sooruzheniy na territorii Rossiyskoy Federatsii v 2003 godu [Accidents of Buildings and Structures in the territory of the Russian Federation in 2003]. All-Russian Public Fund “Centre of the Construction Quality”. Moscow. 2004. Available at: http://www.stroyplan.ru. Date of access: 04.08.12.
  2. Ulitskiy V.M., Lisyuk M.B. Otsenka riska i obespechenie bezopasnosti v stroitel’stve [Risk Assessment and Construction Safety]. Rekonstruktsiya gorodov i geotekhnicheskoe stroitel’stvo [Urban Restructuring and Geotechnical Engineering] Internet Journal. 2002, no. 5. Available at: http://www.georec.spb.ru/journals. Date of access: 04.08.12.
  3. Dykhovichnyy A.A., Vishnevetskiy A.I. Eksperimental’nye issledovaniya uprugikh sistem i matematicheskoe modelirovanie [Experimental Research of Elastic Systems and Mathematical Modeling]. Soprotivlenie materialov i teoriya sooruzheniy [Strength of Materials and Theory of Structures]. Kiev, Budivel’nik Publ., 1980, no. 36, pp. 107—110.
  4. Bakhvalov N.S., Zhidkov N.P., Kobel’kov G.M. Chislennye metody [Numerical Methods]. Binom. Laboratoriya znaniy. [Binom. Laboratory of Knowledge]. Moscow, 2003, 600 p.
  5. Zolina T.V. Raschet odnoetazhnykh promyshlennykh zdaniy, oborudovannykh mostovymi kranami, na gorizontal’noe kranovoe vozdeystvie s uchetom prostranstvennoy raboty [Analysis of Single-storey Industrial Buildings Equipped with Overhead Cranes with Account for Horizontal Effects of Crane Operations]. Moscow, MISI Publ., 1989, 242 p.
  6. Zolina T.V. Raschet promyishlennyih zdaniy na kranovyie nagruzki [Analysis of Exposure of Industrial Buildings to Crane Loads]. Astrakhan, AISI Publ., 2004, 156 p.
  7. Gordeev V.N., Lantukh-Lyashchenko A.I., Pashinskiy V.A., Perel’muter A.V., editor. Nagruzki i vozdeystviya na zdaniya i sooruzheniya [Loads and Actions on Buildings and Structures]. Moscow, ASV Publ., 2007, 482 p.
  8. Pshenichkina V.A., Belousov, A.S., Kuleshova A.N., Churakov A.A. Nadezhnost’ zdaniy kak prostranstvennykh sostavnykh sistem pri seysmicheskikh vozdeystviyakh [Reliability of Buildings as Spatial Composite Systems Exposed to Seismic Impacts]. Volgograd, VolgGASU Publ., 2010, 224 p.
  9. STO 36554501-014—2008 «Nadezhnost’ stroitel’nykh konstruktsiy i osnovaniy». [Standards of Organizations 36554501-014—2008 “Reliability of Structures and Beddings”]. Approved by Federal State Unitary Enterprise “Construction” Research Centre on September 23, 2008.

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