RESEARCH OF BUILDING MATERIALS

METHODOLOGICAL SUPPORT OF ECOLOGICAL SAFETY OF CONSTRUCTION WORKS IN URBAN LANDS EXPOSED TO LANDSLIDES

Vestnik MGSU 3/2012
  • Koposov Evgeniy Vasilevich - Nizhny Novgorod State University of Architecture and Civil Engineering (NNGASU) Doctor of Technical Sciences, Professor, Chair of UNESCO International Department of Ecological Development of the Volga River Basin, Rector 8 (831) 434-02-91; fax: 8 (831) 430-53-48, Nizhny Novgorod State University of Architecture and Civil Engineering (NNGASU), 65 Ilinskaya Str., Nizhny Novgorod, 603950, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 138 - 144

The article presents the findings of the research performed within the framework of Analytical Agency-Level Target-Oriented Programme entitled Development of the Research Potential of Higher School in 2009-2011, Action 2. Project 2.1.2/9589 is entitled Development of Scientific Foundations and Technologies of Protection of Urban Territories from Natural and Anthropogenic Disasters and Negative Impacts. Nizhny Novgorod was selected as the object of research. Manifested dangerous geological processes underway in the city are analyzed in the long-term run. The article demonstrates that the worst hazard comes from the landslides that can destroy the life sustenance system of the city, including its water supply, central heating and other systems. Assessment of efficiency of existing landslide prevention measures is also provided. Dependence of landslide phenomena on the cycles of the solar activity is proven. The landslide development pattern for the coming years is simulated through the employment of the fractal analysis method.

DOI: 10.22227/1997-0935.2012.3.138 - 144

References
  1. Koposov E.V., Koposov S.E. Geoekologicheskaya otsenka tekhnogennogo zagryazneniya podzemnykh vod v karstovykh rayonakh [Geoecological Assessment of Technogenic Pollution of Underground Water in Karst Regions]. Monography. Nizhny Novgorod, NNGASU, 2010, 164 p.
  2. Koposov E.V., Grishina I.N., Ronzhina Yu.V. Metodicheskie osnovy otsenki formirovaniya podzemnogo stoka v zone vliyaniya krupnykh ravninnykh vodokhranilishc [Methodical Fundamentals of Assessment of Groundwater Runoff in the Zone of Influence of Major Water Storage Basins].Privolzhskiy nauchnyy zhurnal [Privolzhsky Scientific Journal], Issue 1 (13), Nizhny Novgorod, 2010, pp. 157—164.
  3. Koposov E.V., Grishina I.N., Ronzhina Yu.V. Osnovnye faktory, opredelyayushchie fil’t-ratsionnye svoystva gornykh porod [Basic Determinants of Filtration Properties of Rocks].Privolzhskiynauchnyy zhurnal [Privolzhsky Scientific Journal], Issue 1 (13), Nizhny Novgorod, 2010, pp. 164—171.
  4. Koposov E.V., Grishina I.N. Geoekologicheskoe issledovanie protsessov podtopleniya na territoriyakh krupnykh promyshlennykh tsentrov [Geoecological Research of Impoundments of Major Industrial Centres]. Moscow, Innovatsii [Innovations], Issue 3 (125), 2009, pp. 39—40.

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MODIFIED KACHUGIN METHOD OF ALTERNATIVE SOFTWARE-BASED PROJECTION OF THE PATTERN OF REORGANIZATION OF ABRASION SHORES OF WATER RESERVOIRS IN THE FLAT TERRAIN

Vestnik MGSU 10/2012
  • Sobol' Il'ya Stanislavovich - Nizhniy Novgorod State University of Architecture and Civil Engineering (NNGASU) Candidate of Technical Sciences, Associate Professor, 8 (831) 430-42-89, Nizhniy Novgorod State University of Architecture and Civil Engineering (NNGASU), 65 Il'inskaya St., N. Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Khokhlov Dmitriy Nikolaevich - Nizhniy Novgorod State University of Architecture and Civil Engineering (NNGASU) postgraduate student, Junior Researcher, 8 (831) 430-42-89, Nizhniy Novgorod State University of Architecture and Civil Engineering (NNGASU), 65 Il'inskaya St., N. Novgorod, 603950, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 281 - 288

Presently, effective regulations employed in the Russian Federation recommend the use of the methods developed by E.G. Kachuchin, G.S. Zolotarev, I.A. Pecherkin, etc. for the projection of patterns of reorganization of coastlines of water reservoirs. One of these methods, developed by E.G. Kachugin, belongs to the group of power methods based on the hypothesis that the amplitudes of destruction of the coast are proportionate to the total wave energy alongside the coastline. The Kachugin method was reworked into a computer-based two-dimensional engineering model of reorganization of the abrasion shore. The model generates alternative projections. It simulates the processes of washout and accumulation of soil in the coastal area and solves the problem of predicting the potential profile of the shore within a pre-set time period or until the abrasion is smoothed away in the course of formation of coastal shallows.
The model testing has proven its efficiency in solving the engineering problems of projecting the line of reservoir abrasion shores with a high degree of reliability.

DOI: 10.22227/1997-0935.2012.10.281 - 288

References
  1. SP 11-105—97. Inzhenerno-geologicheskie izyskaniya dlya stroitel’stva. Chast’ II. [Construction Regulations 11-105—97. Engineering and Geological Surveys for Construction. Part II]. Moscow, Stroyizdat Publ., 2000.
  2. P 30—75. Metodicheskie rekomendatsii po prognozirovaniyu pereformirovaniya beregov vodokhranilishch. [P 30—75. Methodological Recommendations concerning Projection of the Reservoir Shore Reformation]. Leningrad, 1975, 185 p.
  3. Ikonnikov. L.B. Prognoz razrusheniya beregov pri povyshenii urovnya Cheboksarskogo vodokhranilishcha [Projections concering Destruction of Coasts Caused by the Water Level Increase of the Cheboksary Reservoir]. Gidrotekhnicheskoe stroitel’stvo [Hydraulic Engineering]. 1990, no. 2. pp. 11—13.
  4. Rekomendatsii po otsenke i prognozu razmyva beregov ravninnykh rek i vodokhranilishch dlya stroitel’stva [Recommendations concerning Assessment and Projection of the Washout Pattern of Plain Rivers and Reservoirs for Construction Purposes]. Moscow, Stroyizdat Publ., 1987, 72 p.
  5. Rekomendatsii po razmeshcheniyu i proektirovaniyu rasseivayushchikh vypuskov stochnykh vod [Recommendations concerning Position and Design of the Scattering Outfl ow of Effluents]. Moscow, Stroyizdat Publ., 1981, 216 p.
  6. Krylov Yu. M., Strekalov S.S., Tsyplukhin V.F. Vetrovye volny i ikh vozdeystvie na sooruzheniya [Wind Waves and Their Effects on Buildings]. Leningrad, Gidrometeoizdat Publ., 1976, 256 p.
  7. SNiP 2.06.04—82*. Nagruzki i vozdeystviya na gidrotekhnicheskie sooruzheniya (volnovye, ledovye i ot sudov) [Construction Norms and Regulations 2.06.04—82*. Loads and Effects on Hydraulic Structures (Wave, Ice, and Vessels)]. Moscow, Stroyizdat Publ., 1989.
  8. Bronshteyn I.N., Semendyaev K.A. Spravochnik po matematike dlya inzhenerov i uchashchikhsya vtuzov [Handbook of Mathematics for Engineers and Students of Technical Universities]. Moscow, Nauka Publ., 1981, 720 p.
  9. Maksimchuk V. L. Ratsional’noe ispol’zovanie i okhrana beregov vodokhranilishch [Rational Use and Protection of the Coastline of Water Reserviors]. Kiev, Budivel’nik Publ., 1981, 112 p.
  10. Sobol’ I.S., Khokhlov D.N. Avtomatizatsiya inzhenernykh raschetov beregopereformirovaniy na vodokhranilishchakh kriolitozony [Automation of Engineering Designs of the Coast Reformation in the Reservoirs of the Cryolite Zone]. Proceedings of the 9th International Permafrost Engineering Symposium]. Yakutsk, 2011, pp. 115—120.
  11. Sobol’ S.V., Sobol’ I.S., Ikonnikov L.B., Khokhlov D.N. Analiz pereformirovaniya abrazionnykh beregov Gor’kovskogo vodokhranilishcha za period 1957—2010 gg. s prognozom na sleduyushchee desyatiletie [Analysis of Reorganization of Abrasion Shores of the Gorky Reservoir for the Period of 1957—2010 and the Forecast for the Next Decade]. Gidrotekhnicheskoe stroitel’stvo [Hydraulic Engineering]. 2011, no. 12, pp. 13—20.

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SYSTEMATIZATION OF KEY PARAMETERS FOR PROGNOSTICATION OF RESIDUAL SERVICE LIFEOF BUILDING STRUCTURES

Vestnik MGSU 8/2013
  • Shmelev Gennadiy Dmitrievich - Voronezh State University of Architecture and Civil Engineering (Voronezh GASU) Candidate of Technical Sciences, Associate Professor, Department of Urban Development and Municipal Engineering, Voronezh State University of Architecture and Civil Engineering (Voronezh GASU), 84, 20-letiya Oktyabrya str., Voronezh, 394006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 89-96

The author considers the key parameters used to monitor the condition of structures in the course of their long-term use. In the process of analyzing the expediency of employment of the parametric method of prognostication, the author identified the main parameters of structures made of different materials to be monitored for the above purpose. The research team led by the author systematized the key parameters of masonry, reinforced masonry, concrete, reinforced concrete and structural steel. Thus, the key parameters of reinforced concrete structures include displacement of supports, size reduction of the cross-section of a structural element, loading value, concrete strength in compression, tensile strength, cross sectional area of reinforcement, bearing capacity (for all sections), crack opening width (normal and oblique), deflections, and adhesion between concrete and reinforcement.Prognostication requires identification of the limit values of the above-mentioned parameters. Most of them are specified in the effective regulatory documents; some may be found in the reference and research literature. For example, any increase of corrosion in excess of 15% of the cross sectional area will not cause the failure of the structure. It is recommended to use the method of intervals as a most efficient one in the context of limited information. It contemplates development of interval boundaries of the most probable values of changing parameters. A general pattern for the prognostication of the remaining service life of building structures using the key parameters (the parametric method) may be used to identify initial values of these parameters and limits of changes in their values.

DOI: 10.22227/1997-0935.2013.8.89-96

References
  1. GOST R 53778—2010. Zdaniya i sooruzheniya. Pravila obsledovaniya i monitoringa tekhnicheskogo sostoyaniya [National State Standard 53778—2010. Buildings and Structures. Procesures for Inspection and Monitoring of Their Technical Condition]. Moscow, Stroyizdatinform Publ., 2010, 65 p.
  2. SP 13-102—2003. Pravila obsledovaniya nesushchikh stroitel'nykh konstruktsiy zdaniy i sooruzheniy [Construction Regulations 13-102—2003. Procedures for Inspection of Bearing Structural Elements of Buildings and Structures]. Moscow, Gosstroy Rossii GUP TsPP Publ., 2003, 32 p.
  3. Schueremans L., Van Gemert D. Service Life Prediction of Reinforced Concrete Structures, Based on In-service Chloride Penetration Profiles. Proceedings of the Eighth International Conference on Durability of Building Materials and Components. 1999, vol. 1, pp. 84—93.
  4. Dotreppe J.-C. Degradation Mechanism and Service Life on Concrete Slabs on Composite Bridges. Proceedings of the Eighth International Conference on Durability of Building Materials and Components. 1999, vol. 1, pp. 16—27.
  5. Faber M.H., Kubler O., Fontana M., Knobloch M. Failure Consequences and Reliability Acceptance. Hochschulverlag AG on der ETH. Zurich, 2004, 43 p.
  6. Sarja A. Integrated Life Cycle Design of Structures. Tailor and Francis e-Library, 2005, 130 p.
  7. Kumar M.P., Burrows R.W. Building Durable Structures in the 21st century. The Indian Concrete Journal. 2001, no. 6, pp. 437—443.
  8. Kaliske M., Schmidt J., Schaur. A New Design Proposal for Timber/Concrete-composite Beams. Improvement of Buildings' Structural Quality by New Technologies. London, Tailor and Francis Group, 2005, pp. 21—34.
  9. Shmelev G.D., Ishkov A.N. Prognozirovanie ostatochnogo resursa izgibaemykh zhelezobetonnykh konstruktsiy ekspluatiruemykh v neagressivnykh sredakh [Forecasting the Residual Service Life of Inflexible Reinforced Concrete Structures in the Non-aggressive Environment]. Rostov-on-Don, RGSU Publ., 2007, 219 p.
  10. Mal'ganov A.I., Plevkov V.S., Polishchuk A.I. Vosstanovlenie i usilenie stroitel'nykh konstruktsiy avariynykh i rekonstruiruemykh zdaniy. Atlas skhem i chertezhey [Reconstruction and Reinforcement of Building Structures of Dangerous and Reconstructed Buildings. Atlas of Patterns and Drawings]. Tomsk, Tomskiy mezhotraslevoy TsNT publ., 1990, 315 p.

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STUDY OF THE LANDSLIDE PROCESS BY THE CORRELATION ANALYSIS METHOD USING RANDOM FUNCTIONS

Vestnik MGSU 8/2017 Volume 12
  • Simonyan Vladimir Victorovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Institute of Environmental Engineering and Mechanization, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Nikolaeva Galina Alexandrovna - Moscow State University of Civil Engineering (National Research University) (MGSU) student, Institute of Environmental Engineering and Mechanization, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 846-853

Subject of research is the analysis of the dynamics of landslide processes on the example of Karamyshevskiy slope in Moscow. Objectives are to show that the method of correlation analysis using random functions can be used to analyze the dynamics of landslide processes along with other methods. The magnitude of the displacements of landslide points of Karamyshevskiy landslide, obtained from the data of geodetic monitoring (a total of 8 cycles of observations) serve as source material. Plans of isolines in space were constructed on the basis of these displacements. Applying the method of correlation analysis and having the necessary computational calculations, the estimates of the mathematical expectation for random variables, estimation of variance and correlation moments and estimating the standard deviations obtained normalized autocorrelation function, which is approximated by exponential function, were obtained. For clarity, the illustrations are given with isolines of displacements, the random graph function, the graph of the normalized autocorrelation function and the graph of the approximating function. The obtained exponential function allows to make some conclusions about landslide processes in Keramicheskiy slope: landslide displacement is continuing and will continue in the future. It is necessary to takes measures for engineering protection; approximation of the normalized correlation function of the form ρ = 0.9986е-3Е-04x allow to apply this approach to expectation values of the displacements of the landslide points. The study of landslide process at Karamyshevskiy slope by the method of correlation analysis using the random functions shows that this method can be used in the analysis of slope stability along with other methods. The method can be recommended for the analysis of the dynamics of landslides and other landslide slopes.

DOI: 10.22227/1997-0935.2017.8.846-853

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