DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

Bearing capacity of corroded bending reinforced concrete element

Vestnik MGSU 7/2014
  • Larionov Evgeniy Alekseevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Department of Advanced Mathematics, 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 51-63

Many Russian and foreign scientists studied in their works bearing capacity of reinforced concrete elements. The principal difference of the presented approaches from the traditional ones is that they lack the necessity of artificial sizing as improbable for simultaneous getting preset limit values of corresponding parameters. In our paper we evaluated the bending moment, giving rise to limit stress strain behavior of corroded reinforced concrete beams with corroded concrete and tensile reinforcement. In order to reduce and simplify calculations we consider single reinforcement and ignore tensile reinforcement resistance, and in order to emphasize the idea of the approach we assume noncorrosiveness. The results of concrete stress strain state analysis are more reliable.

DOI: 10.22227/1997-0935.2014.7.51-63

References
  1. Guzeev E.A., Mutin A.A., Basova L.N. Deformativnost' i treshchinostoykost' szhatykh armirovannykh elementov pri dlitel'nom nagruzhenii i deystvii zhidkikh sred [Deformability and Crack Resistance of Compressed Reinforced Elements with Long-Term Loading in Fluids]. Moscow, Stroyizdat Publ., 1984, 34 p.
  2. Komokhov P.P., Latynov V.I., Latynova M.V. Dolgovechnost' betona i zhelezobetona [Longevity of Concrete and Reinforced Concrete]. Ufa, Belaya reka Publ., 1998, 216 p.
  3. Bondarenko V.M. Nekotorye fundamental'nye voprosy razvitiya teorii zhelezobetona [Some Fundamental Questions of Reinforced Concrete Theory Development]. Stroitel'naya mekhanika inzhenernykh konstruktsiy i sooruzheniy [Structural Mechanics of Engineering Constructions and Buildings]. 2010, no. 1, pp. 20—34.
  4. Bondarenko V.M., Larionov E.A., Bashkatova M.E. Otsenka prochnosti izgibaemogo zhelezobetonnogo elementa [Evaluation of Bending Reinforced Element Strength] Izvestiya OrelGTU [News of Orel State Technological University]. 2007, no. 2 (14), pp. 25—28.
  5. Bondarenko V.M., Larionov E.A. Printsip nalozheniya deformatsiy pri strukturnykh povrezhdeniyakh elementov konstruktsiy [Deformation Superposition Frequency in Structural Damages of Construction Elements]. Stroitel'naya mekhanika inzhenernykh konstruktsiy i sooruzheniy [Structural Mechanics of Engineering Structures and Buildings]. 2010, no. 1, pp. 16—22.
  6. Aleksandrov A.B., Travush V.I., Matveev A.B. O raschete sterzhnevykh konstruktsiy na ustoychivost' [Collapse Method of Structural Design for Frame Structures]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering]. 2002, no. 3, pp. 16—19.
  7. Uliti V.V. Deformatsionnyy kriteriy pri analize ustoychivosti i prodol'nogo izgiba v usloviyakh fizicheskoy nelineynosti [Deformation Criterion in Rigidity and Buckling Analysis in Physical Nonlinearity]. Stroitel'naya mekhanika i raschet sooruzheniy [Structural Mechanics and Structural Analysis]. 2012, no. 1, pp. 34—39.
  8. Beddar M. Fiber Reinforced Concrete: Past, Present and Future. Beton i zhelezobeton — puti razvitiya: nauchnye trudy 2-y Vserossiyskoy (Mezhdunarodnoy) konferentsii po betonu i zhelezobetonu [Concrete and Reinforced Concrete — Development Path: Scientific Works of the 2nd All-Russian (International) Conference on Concrete and Reinforced Concrete]. Ìoscow, Dipak Publ., 2005, vol. 3, pp. 228—234.
  9. Hillerborg A., Modar M., Peterson P. Analysis of Crack Formation and Crack Grows in Concrete by Means of Fracture Mechanics and Finite Elements. Cem. and Concr. Res. 1976, no. 6, pp. 773—781.
  10. Pekau Î.A., Syamal Ð.Ê. Non-Linear Torsional Coupling in Symmetric Structures. J. Sound and Vibration. 1984, vol. 94, no. l, pp. 1—18.
  11. Kilar V., Fajfar P. Simple Push-Over Analysis of Asymmetric Buildings. Journal of Earthquake Engineering and Structural Dynamics. 1997, no. 26, pp. 233—249. DOI: http://dx.doi.org/10.1002/(SICI)1096-9845(199702)26:2<233::AIDEQE641>3.0.CO;2-A
  12. Tso W.K. Induced Torsional Oscillations in Symmetrical Structures. Journal of Earthquake Engineering and Structural Dynamics. 1975, pp. 337—346. DOI: http://dx.doi.org/10.1002/eqe.4290030404.
  13. Bondarenko V.M., Ivanov A.I., Piskunov A.V. Opredelenie korroziynykh poter' nesushchey sposobnosti szhatykh zhelezobetonnykh elementov pri reshenii po SNiP [Defining Corrosion Damages of Bearing Capacity of Compressed Reinforced Concrete Elements According to Construction Norms and Rules]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 2011, no. 5, pp. 26—28.
  14. Bondarenko V.M., Kolchunov V.I., Klyueva N.V. Eshche raz o konstruktivnoy bezopasnosti i zhivuchesti zdaniy [Once Again on Constructive Building Security and Survivability]. RAASN. Vestnik otdeleniya stroitel'nykh nauk. Yubileynyy vypusk [Russian Academy of Architecture and Construction Sciences. Reports of Structural Sciences Department. Anniversary Issue]. 2007, no. 11, pp. 81—86.
  15. Bondarenko V.M. O vliyanii korrozionnykh povrezhdeniy na dissipatsiyu energii pri silovom deformirovanii betona [Corrosive Effect on Energy Dissipation in Force Deformation of Concrete]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 2008, no. 6, pp. 24—28.

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ASSESSMENTOF SEISMIC STABILITY OF BUILDINGS THAT HAVE SEISMICPROTECTION IN THE FORM OF ELASTOMERIC ISOLATORS

Vestnik MGSU 8/2013
  • Mkrtychev Oleg Vartanovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, head, Scientific Laboratory of Reliability and Seismic Resistance of Structures, Professor, Department of Strength of Materials, Moscow State University of Civil Engineering (National Research University) (MGSU), ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Bunov Artem Anatol’evich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, engineer, Department of Strength of Materials, 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 21-28

Nowadays, various systems of seismic protection are applied to assure seismic protection of buildings and structures, located in earthquake areas. The greatest prevalence and popularity has been attained by the systems of active seismic protection.In this article, the authors study the efficiency of application of an active seismic protection system by taking high-damping rubber elastomeric isolators as an example. Calculations and their comparative analysis were made for a high-rise reinforced concrete building, and their exposure to the seismic impact was examined. Those calculations were made both with and without the application of the active seismic isolation system. Calculations were carried out by means of the linearly-spectral method using Lira software. Maximum relative horizontal moments arising on the top of the building and forces applied to the elements of walls and columns were compared. On the basis of the results of the calculations and their comparative analysis, the conclusion is drawn that elastomeric isolators may be efficiently applied as an active seismic protection system.

DOI: 10.22227/1997-0935.2013.8.21-28

References
  1. Ormonbekov T.O., Begaliev Yu.T., Derov A.V., Maksimov G.A., Pozdnyakov S.G. Primenenie tonkosloynykh rezinometallicheskikh opor dlya seysmozashchity zdaniy v usloviyakh territorii Kyrgyzskoy Respubliki [Application of Thin-layered Rubber-metal Bearings to Assure Seismic Protection of Buildings in the Environment of the Republic of Kirghizia]. Bishkek, Uchkun Publ., 2005, 215 p.
  2. Catalogue on Elastomeric Isolators Series SI-H 550/154. FIP Industriale S.P.A.
  3. Kircher Ch.A. NEHRP Recommended Provisions: Design Examples. Chapter 12: Seismically Isolated Structures. Federal Emergency Management Agency. FEMA P-751, Washington, D.C., 2012.
  4. Prestandard and Commentary for the Seismic Rehabilitation of Buildings (FEMA 356). Chapter 9.2: Seismic Isolation System. Federal Emergency Management Agency. Washington, D.C, 2000.
  5. Constsntinou M.C., Kalpakidis I., Filiatrault A., Ecker Lay R.A. LRFD-Based Analysis and Design Procedures for Bridge Bearings and Seismic Isolators. Technical Report MCEER-11-0004. New York, Buffalo, September 26, 2011, p. 204.
  6. Ayzenberg Ya.M., Smirnov V.I., Akbiev R.T. Metodicheskie rekomendatsii po proektirovaniyu seysmoizolyatsii s primeneniem rezinometallicheskikh opor [Methodological Recommendations on Seismic Isolation Design with the Application of Rubber-metal Bearings]. Moscow, RASS Publ., 2008, 46 p.
  7. Naeim F., Kelly J.M. Design of Seismic Isolated Structures: from Theory to Practice. New York, John Wiley, 1999, 289 p.
  8. Mkrtychev O.V., Mkrtychev A.E. Analiz effektivnosti rezinometallicheskikh opor pri stroitel'stve vysotnykh zdaniy v seysmicheskikh rayonakh [Efficiency Analysis of Rubber-metal Bearings in the Course of Construction of High-rise Buildings in Earthquake Areas]. Vestnik NITs ”Stroitel'stvo” [Proceedings of Research Centre for Construction]. 2010, no. 2 (XXVII), pp. 126—137.
  9. Mkrtychev O.V., Dzhinchvelashvili G.A. Problemy ucheta nelineynostey v teorii seysmostoykosti (gipotezy i zabluzhdeniya) [Problems of Nonlinearities Consideration in the Seismic Stability Theory (Hypotheses and Delusions)]. Moscow, MGSU Publ., 2012, 192 p.

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Constructive solutions for beamless capitalless floors with prestressed reinforcement

Vestnik MGSU 6/2014
  • Bardysheva Yuliya Anatol'evna - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Architectural and Construction Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospect, Mytishchi, 141006, Moscow Region, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kuznetsov Vitaliy Sergeevich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Senior Research Worker, Department of Architectural and Construction Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospect, Mytishchi, 141006, Moscow Region, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Talyzova Yuliya Aleksandrovna - Moscow State University of Civil Engineering (MGSU) Assistant, Department of Architectural and Structural 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 44-51

In the article the authors present advanced constructions of prestressed reinforced concrete flat ceiling, where high-strength ropes in elastic shell are used as stressed reinforcement. The novelty of the solution lays in diagonal arrangement of hard valves and use of high-strength ropes in a flexible shell of "Monostrand" type. This type of prestress, in our opinion, is the most acceptable from technical point of view for selective reinforcement of separate tense rods or cables. The use of pre-stressed reinforcement in the form of individual rods or cables increases the rigidity and crack resistance of concrete beamless slabs. The use of high-strength ropes in the monostrand-type shell makes it possible to prestress in frames of single cell plate or floor in general and to reduce labour input for stressing armature. The paper presents original solution with diagonal position of the valve. The authors suggest the use of prestressed diagonal valves as in all cells of the floor with the cells of the same or only slightly different size and in separate cells of the floor (for roofs with different cells). The diagonal location of stressed reinforcement proposed in the work is an efficient solution for extending the range of dimensions and loads size.

DOI: 10.22227/1997-0935.2014.6.44-51

References
  1. Chernygov E.A. Issledovanie effektivnosti primeneniya tekhnologii natyazheniya armatury na beton bez stsepleniya [Efficiency Study of the Use of Post-Tensioning Technology without Bond]. Molodye uchennye v transportnoy nauke: nauchnye trudy [Young Scientists in Transport Science: Scientific Works]. Moscow, OAO TsNIIS Publ., 2005, pp. 87—95.
  2. Citnikov S.L., Miryushenko E.F. Sposob izgotovleniya predvaritel'no napryazhennykh zhelezobetonnykh konstruktsiy i monostrend [Production Method of Prestressed Reinforced Concrete Structures and Monostrand]. Patent RF № 2427686. № 2009132979/03; zayavl. 02.09.2009; opubl. 27.08.2011, Byul. № 24 [Russian Patent no. 427686. No. 2009132979/03; subm. 02.09.2009; published 27.08.2011, Bull. No. 24]. 8 p.
  3. Zaytsev Yu.V. Modelirovanie deformatsiy i prochnosti betona metodami mekhaniki razrusheniy [Concrete Deformation and Strength Modeling by Means of Fracture Mechanics]. Moscow, Stroyizdat Publ., 1982, 196 p.
  4. Gagin A.A. Osobennosti bezbalochnykh bol'sheproletnykh monolitnykh zhelezobetonnykh perekrytiy [Features of Beamless Longspan Monolithic Reinforced Concrete Slabs]. Vestnik RUDN. Seriya: Inzhenernye issledovaniya [Proceedings of Peoples’ Friendship University of Russia. Series: Engineering Investigations]. 2010, no. 2, pp. 25—28.
  5. Paillé JM. Calcul des structures en béton. Guide d'application. 2 ed. AFNOR, 2013, 716 p.
  6. Freyssinet E. Naissance du béton précontraint et vues d'avenir. Travaux, 1954. no. 236, 463 p.
  7. Martynov A.A. Sposob natyazheniya kanatnoy armatury pri vozvedenii zdaniy po sisteme ims [Way of Wire Rope Tensioning in the Process of Construction Using Industrial Erecting System]. Patent RF № 2264506. № 2002117939/03; zayavl. 05.07.2002; opubl. 20.11.2005 Byul. № 32 [Russian Patent no. 2264506. No. 2002117939/03; subm. 05.07.2002; published 20.11.2005, Bull. no. 32]. 6 p.
  8. Dzyuba I.S., Vatin N.I., Kuznetsov V.D. Monolitnoe bol'sheproletnoe rebristoe perekrytie s postnapryazheniem [Monolithic Longspan Ribbed Floor with Post-stress]. Inzhenerno-stroitel'nyy zhurnal [Engineering Construction Journal]. 2008, no. 1, pp. 5—12.
  9. Likhov Z.R. Zhelezobetonnye stropil'nye balki s konsol'nymi vystupami vdol' proleta [Reinforced Concrete Sloping Beams with Outriggers Along Span]. Razvitie teorii i praktiki zhelezobetonnykh konstruktsiy: sbornik nauchnykh trudov [Development of Theory and Practice of Reinforced Concrete Structures: Collection of Scientific Works]. Rostov on Don, RGSU Publ., SevkavNIPIagroprom Publ., 2003, pp. 112—114.
  10. Ryazantsev S.P., Fedorov Yu.L. Monolitnoe zhelezobetonnoe bezrigel'noe perekrytie [Monolithic Reinforced Concrete Girderless Floor Construction]. Novye idei novogo veka: materialy 10-go mezhdunarodnogo foruma IAS TOGU [New Materials of the New Century: Materials of the 10th International Forum of Pacific National University]. Khabarovsk, TOGU Publ., 2010, vol. II, pp. 90—94.
  11. Mailyan D.R., Mailyan R.L., Osipov M.V. Zhelezobetonnye balki s predvaritel'nym napryazheniem na otdel'nykh uchastkakh [Reinforced Concrete Beams with Prestress of Separate Areas]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 2002, no. 2, pp. 18—20.
  12. Durability of Post-tensioning Tendons. Fib Bulletin no. 33, Lausanne, 2005, 76 p.
  13. Kritsin S.T., Markov N.A., Sharipov R.Sh. Sposob natyazheniya armaturnogo elementa s ankernym ustroystvom [Way of Reinforcing Element Tensioning with Anchor Arrangement]. Patent RF № 2037041. № 5038642/33; zayavl. 24.02.1992; opubl. 09.06.1995 [Russian Patent no. 2037041. No. 5038642/33; subm. 24.02.1992; publ. 09.06.1995. Available at: http://www.freepatent.ru/patents/2037041. Date of access: 30.03.2014.
  14. Walsh K.Q., Kurama Y.C. Behavior of Unbonded Post-tensioning Monostrand Anchorage Systems under Monotonic Tensile Loading. PCI Journal. Precast / Prestressed Concrete Institute, 2010, vol. 55, no. 1, pp. 97—117.
  15. Kishinevskaya E.V., Vatin N.I., Kuznetsov V.D. Usilenie stroitel'nykh konstruktsiy s ispol'zovaniem postnapryazhennogo zhelezobetona [Reinforcement of Building Structiures Using Poststressed Tecinforced Concrete]. Inzhenerno-stroitel'nyy zhurnal [Engineering and Construction Journal]. 2009, no. 3, pp. 29—32.

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USING SOLAR ENERGY IN HEAT TREATMENT ОF CONCRETE IN THE REPUBLIC OF KAZAKHSTAN

Vestnik MGSU 10/2012
  • Aruova Lyazat Boranbaevna - Kyzylorda State University Named after Korkyt Ata (Korkyt Ata KSU) Doctor of Technical Sciences, Professor, Department of Architecture and Construction, Kyzylorda State University Named after Korkyt Ata (Korkyt Ata KSU), 29A Ayteke bi str., Kyzylorda, 120014, Kazakhstan; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Dauzhanov Nabi Tokmurzaevich - Kyzylorda State University named after Korkyt Ata Candidate of Technical Sciences, Associate Professor, 87015660731, Kyzylorda State University named after Korkyt Ata, 29A Ayteke bi st., Kyzylorda, 120014, Kazakhstan; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 142 - 146

In the article, the authors consider heat and mass transfer inside reinforced concrete structures, and their impact on the mechanical properties of the latter.
The authors argue that humidity is an important factor of concrete hardening. As a rule, concrete-to-environment mass transfer, as well as the mass transfer inside concrete products, cause fast dehydration in the course of hardening, thus, leading to the insufficiency of strength. This phenomenon may be exemplified by prefab concrete products hardened in the hot and dry climate. The findings of the authors constitute a simple though efficient solution that consists in the employment of solar chambers equipped with an intermediate, or supplementary, heat carrier. Solar chambers are to be installed inside production premises.
Reinforced concrete products manufactured in accordance with the technology proposed by the authors feature high strength and durability. The concrete structure and properties (namely, compressive strength, tensile strength, modulus of elasticity and cold resistance) even exceed those of the concrete products hardened within 28 days in the regular temperature and humidity environment.
Theoretical principles and experimental research findings of the authors have been invested into the year-round technology of manufacturing of reinforced concrete products inside production premises, where products are treated by the solar energy and a supplementary source of energy. The concrete mix is poured into the form and compacted there; thereafter, the product surface is smoothed. Immediately after that a cover is fixed onto the form and tightly attached to the form walls. The process is to be initiated at 8 a.m. to maximize the period of solar energy consumption and to accelerate the process of concrete hardening.

DOI: 10.22227/1997-0935.2012.10.142 - 146

References
  1. Abhat A., Aboul–Enein S., Malatidis N. Heat-of-fusion Storage Systems for Solar Heating Applications in Lifter, no. 132, pp. 157—172.
  2. Cease M.E., White D.H. Emulsification of Thermal Energy Storage Materials in an Immiscible Fluid. International Journal of Energy Resources. 1983, no. 2, vol. 7, p. 25.
  3. Lu Changgeng. Industrial Production of Concrete Components in China. Betonwerk+Fertigteil-Technik (Concrete Precasting Plant and Technology), 1986, no. 5, p. 56.
  4. Malhotra V.M. In-place Evaluation of Concrete. Jour. of Constr. Div. Proc. of Am. Soc. of Civ. Engr. 1975, vol. 101, p. 45.
  5. Krylov B.A., Zasedatelev I.B., Malinskiy E.N. Izgotovlenie sbornogo zhelezobetona s primeneniem gelioform [Production of Prefab Reinforced Concrete Using Solar Hardening Forms]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 1984, no. 3, pp. 17—18.
  6. Krylov B.A., Chkuaselidze L.G., Topil’skiy G.V., Rybasov V.P. Vododispersionnye plenkoobrazuyushchie sostavy dlya betona v usloviyakh sukhogo zharkogo klimata [Water-dispersible Film-forming Concrete Compositions in Hot Dry Climates]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 1992, no. 6, p. 15.
  7. Krylov B.A., Zvezdov A.I. Vliyanie temperatury na ego strukturu i tverdenie [Temperature Influence on Concrete Structure and Hardening]. International Symposium in Japan E&FN Spook. 1995, vol. 2, pp. 917—925.
  8. Abhat A. Low Temperature Latent Heat Thermal Energy Storage. Heat Storage Materials. Solar Energy. 1983, no. 4, vol. 30, p. 65.
  9. Commission 42-CEA. Properties Set Concrete at Early Ages. State-of-the-art-report. Materiaux et Constructions. 1981, no. 84, vol. 14, p. 15.
  10. Kalt A.C. Speicherung Thermischer Energie in Anlagen dur Nulzung der Sonnenenergie. Oel+Gasfeuerung. 1980, no. 11, vol. 25, p. 55.

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Concrete and reinforced concrete - glance at future

Vestnik MGSU 4/2014
  • Tamrazyan Ashot Georgievich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, full member, Russian Engineering Academy, head of the directorate, 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 181-189

In the article the information on the upcoming international conference on concrete and reinforced concrete is offered. The aim of the conference is stated, as well as the main points of the program, composition of the conference, the papers’ subject is disclosed. The author highlights the effect of reinforced concrete invention on the world civilization development. According to the author’s point of view, today reinforced concrete became one of the most evident means of the world development.

DOI: 10.22227/1997-0935.2014.4.181-189

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Experimental research into the stress-strainstate of high-rise buildings concrete structures

Vestnik MGSU 10/2013
  • Almazov Vladlen Ovanesovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Department of Reinforced Concrete and Masonry Structures, 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 .
  • Klimov Alexey Nikolaevich - Moscow State University of Civil Engineering (MGSU) Assistant, Department of Reinforced Concrete and Masonry Structures, 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 .

Pages 102-109

Some results of high-rise buildings monitoring program are presented in this paper. The monitoring system is currently operating at the high-rise apartment building in Moscow. The vibrating wire strain gauges were embedded in the foundation slab and groundlevel walls during the construction. Measurements are carried out automatically at 6-hour intervals, and received in real time by the monitoring station. In this paper the result of measuring the strain in the concrete walls during 4 years is reported.The computer model of the building was made in order to compare the experimental and predicted data. Mathematical models of a high-rise building are simplified, but we are taking into account the main factors, that influence the stress-strain state of reinforced concrete structures. These factors are: influence of soil base, phases of construction and change of concrete deformation characteristics. The total strain in constructions was calculated as a sum of a strain under load, thermal strain, plastic shrinkage and creep. This data was compared with the total strain in structures measured by the gauges.The analysis of quantitative and qualitative correspondence between the model and actual data was performed. The comparison shows that the theoretical results obtained by the performed procedure are similar to the experimental data. It demonstrates that the model reflects the actual behavior of constructions. The differences found during the comparison are due to the redistribution of stresses from one part of a construction to the other that can occur even if the load is constant. This phenomenon is clearly seen during the suspension of construction. Some differences due to unaccounted factors were found, which should be investigated later.

DOI: 10.22227/1997-0935.2013.10.102-109

References
  1. Casciati F. An Overview of Structural Health Monitoring Expertise within the European Union. In: Wu Z.S., Abe M. Structural Health Monitoring and Intelligent Infrastructure — Proceedings of the 1st International Conference on Structural Health Monitoring and Intelligent Infrastructure. Lisse, the Netherlands, Balkema. 2003, vol. 1, pp. 31—37.
  2. Glisic B., Inaudi D. Fibre Optic Methods for Structural Health Monitoring. John Wiley & Sons, Inc., 2007, 276 p.
  3. Ko J.M., Ni Y.Q. Technology Developments in Structural Health Monitoring of Largescale Bridges. Engineering Strucutres. Elsevier, 2005, vol. 27, no.12, pp. 1715—1725.
  4. Katzenbach R, Hoffmann H., Vogler M., Moormann C. Costoptimized Foundation Systems of High-Rise Structures, based on the Results of Actual Geotechnical Research. International Conference on Trends in Tall Buildings, September 5—7, 2001. Frankfurt on Main, pp. 421—443.
  5. Schmitt A., Turek J., Katzenbach R. Application of Geotechnical Measurements for Foundations of High Rise Structures. 2nd World Engineering Congress (WEC), 22—25 July 2002. Sarawak, Malaysia, pp. 40—46.
  6. Glisic B., Inaudi D., Lau J.M., Fong C.C. Ten-year Monitoring of High-rise Building Columns Using Long-gauge Fiber Optic Sensors. Smart Materials and Structures, 2013, vol. 22, no. 5, paper 055030.
  7. Voznyuk A.B., Kapustyan N.K., Tarakanovskiy V.K., Klimov A.N. Monitoring v protsesse stroitel'stva napryazhenno-deformirovannogo sostoyaniya nesushchikh konstruktsiy i gruntov osnovaniya vysotnykh zdaniy v Moskve [Stress-strain State Monitoring of Structures and Soil Base of High-rise Buildings in Moscow]. Budivel?ni konstruktsii [Building Constructions]. Kiev, 2010, vol. 73, pp. 461—467.
  8. Almazov V.O., Klimov A.N. Aktual'nye voprosy monitoringa zdaniy i sooruzheniy [Topical Issues of Buildings and Structures Monitoring]. Sbornik dokladov traditsionnoy nauchno-tekhnicheskoy konferentsii professorsko-prepodavatel'skogo sostava Instituta stroitel'stva i arkhitektury [Collected Reports of the Traditional Scientific and Technical Conference of the University Faculty of the Institute of Civil Engineering and Architecture]. Moscow, MGSU Publ., 2010, pp. 169—174.
  9. Ter-Martirosyan Z.G., Telichenko V.I., Korolev M.V. Problemy mekhaniki gruntov, osnovaniy i fundamentov pri stroitel'stve mnogofunktsional'nykh vysotnykh zdaniy i kompleksov [Problems of Soil Mechanics, Soil Bases and Foundations in the process of Erection of High-rise Buildings]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2006, no. 1, pp. 18—27.
  10. Kryzhanovskiy A.L., Rubtsov O.I. Voprosy nadezhnosti proektnogo resheniya fundamentnykh plit vysotnykh zdaniy [Reliability of Foundation Slabs of High-rise Buildings]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2006, no. 1, pp. 191—198.
  11. Bezvolev S.G. Proektirovanie i raschety osnovaniy i fundamentov vysotnykh zdaniy v slozhnykh inzhenerno-geologicheskikh usloviyakh [Designing Procedure and Calculations of Soil Bases and Foundations of High-rise Buildings in Difficult Geotechnical Conditions]. Razvitie gorodov i geotekhnicheskoe stroitel'stvo [Development of Urban Areas and Geotechnical Engineering]. 2007, no. 11, pp. 98—118.
  12. Kabantsev O.V., Karlin A.V. Raschet nesushchikh konstruktsiy zdaniy s uchetom istorii vozvedeniya i poetapnogo izmeneniya osnovnykh parametrov raschetnoy modeli [Calculation of Bearing Structures of Buildings with Due Regard to the History of Construction and Stage-by-stage Change of Key Parameters of Computational Model]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering]. 2012, no. 7, pp. 33—35.
  13. Rekomendatsii po uchetu polzuchesti i usadki betona pri raschete betonnykh i zhelezobetonnykh konstruktsiy [Guidance on Accounting for Creep and Shrinkage of Concrete in case of Calculation of Reinforced Concrete Structures]. Moscow, Stroyizdat Publ, 1988, 121 p.
  14. Klimov A.N. Metodika obrabotki dannykh sistemy monitoringa vysotnogo zdaniya // Promyshlennoe i grazhdanskoe stroitel'stvo [Techniques of Data Processing of Monitoring System of High-rise Buildings]. 2012, no. 12, pp. 42—43.

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