DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

MODELLING OF A METAL RIBBED CYLINDRICAL PANEL

Vestnik MGSU 2/2012
  • Raschepkina Svetlana Alekseevna - Balakovo Institute of Technique, Technology and Management, Affiliate of Saratov State Technical University Candidate of Technical Sciences, Senior Lecturer, Deputy Head of Department of Industrial and Civil Engineering 8 (453) 44-47-90, Balakovo Institute of Technique, Technology and Management, Affiliate of Saratov State Technical University, 140 Chapaeva St., Saratov Region, Balakovo; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Bojchuk Sergej Vasil'evich - Balakovo Institute of Technique, Technology and Management, Affiliate of Saratov State Technical University Assistant Lecturer 8 (453) 44-47-90, Balakovo Institute of Technique, Technology and Management, Affiliate of Saratov State Technical University, 140 Chapaeva St., Saratov Region, Balakovo.

Pages 84 - 90

The results of research of a newly developed metal cylindrical panel in the course of its shaping, and procedure of verification of the computer model are presented in the paper. The computer model of the panel under consideration, developed through selection of the finite element as a result of reshaping designated to ensure the formation of a plastic hinge in the points of junction between the principal element (the plate) and the stripes, makes it possible to perform a sufficiently accurate analysis of experimental and theoretical data of structures of ribbed panels under consideration.
Application of the finite elements method in the course of development of computer models for the purpose of research of the process of shaping of ribbed panels at each stage of pumping of compressed air into the panel, makes it possible to assess the alteration of the stress-strained state of the structure and to identify the parameters of the new cylindrical ribbed panel with a high degree of accuracy, including such parameters as the radius of curvature , swell ratio , and compression ratio .

DOI: 10.22227/1997-0935.2012.2.84 - 90

References
  1. Raschepkina S.A. Metallicheskie emkosti iz legkih konstrukcij povyshennoj transportabel'nosti [Metal Tanks Made of Lightweight Structures of Enhanced Transportability]. Saratov, SGTU, 2007, 288 p.
  2. Raschepkina S.A., Bojchuk S.V. Jeksperimental'nye issledovanija metallicheskih panelej s polymi rebrami [Experimental Research of Metal Panels with Hollow Ribs]. International Scientific and Technical Conference “Jeffektivnye Stroitel'nye Konstrukcii: Teorija i Praktika” [Effective Building Structures: Theory and Practice], collection of papers, Penza University of Architecture and Civil Engineering, 2008. pp. 49—52.
  3. Gorodeckij A.S., Evzerov I.D. Komp'juternye modeli konstrukcij [Computer Models of Structures], Moscow, ASV, 2009. 360 p.
  4. Raschepkina S.A. Novye prostranstvennye rebristye metallicheskie konstrukcii zdanij i sooruzhenij [New Three-dimensional Metal Ribbed Structures of Buildings and Facilities], Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2009, Issue # 7, pp. 48—50.

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CAISSON TYPE HOLLOW FLOOR SLABS OF MONOLITHIC MULTI-STOREYED BUILDINGS

Vestnik MGSU 6/2016
  • Malakhova Anna Nikolaevna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of Architectural and Structural Design, Department of Reinforced Concrete Structures, 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 15-24

One of the disadvantages of building structures made of reinforced concrete is their considerable weight. One of the trends to decrease the weight of concrete structures, including floor slabs, is the arrangement of voids in the cross-sectional building structures. In Russian and foreign practice paper, cardboard and plastic tubes has been used for creation of voids in the construction of monolithic floor slabs. Lightweight concretes were also used for production of precast hollow core floor slabs. The article provides constructive solutions of precast hollow core floor slabs and solid monolithic slabs that were used in the construction of buildings before wide use of large precast hollow core floor slabs. The article considers the application of caisson hollow core floor slabs for modern monolithic multi-storeyed buildings. The design solutions of such floor slabs, experimental investigations and computer modeling of their operation under load were described in this article. The comparative analysis of the calculation results of computer models of a hollow slabs formed of rod or plastic elements showed the similarity of calculation results.

DOI: 10.22227/1997-0935.2016.6.15-24

References
  1. Folomeev A.A. Snizhenie materialoemkosti zhelezobetonnykh konstruktsiy [Decrease of Materials Consumption of Reinforced Concrete Structures]. Moscow, Stroyizdat Publ., 1974, 66 p. (In Russian)
  2. Pasternak P.L., Mar’yasina I.E. Zhelezobetonnye chastorebristye perekrytiya i nastily [Ribbed Reinforced Concrete Floor Slabs and Decks]. Moscow, Mashstroyizdat Publ., 1950, 144 p. (In Russian)
  3. Al’bom usovershenstvovannykh zhelezobetonnykh konstruktsiy dlya kapital’nogo remonta zhilykh domov [The Album of Advanced Reinforced Concrete Structures for the Major Repairs of Residential Buildings]. Leningrad, Stroyizdat Publ., 1988, 302 p. (In Russian)
  4. Abasheva L.P., Tonkov I.L., Tonkov Yu.L. Opyt ob”emnogo modelirovaniya mnogopustotnykh zhelezobetonnykh plit perekrytiya pri reshenii nestandartnoy zadachi [The Experience of Three-Dimensional Modeling of Hollow Core Reinforced Concrete Floor Slabs for Solving Nonstandard Problems]. Promyshlennoe i grazhdanskoe stroitel’stvo [Industrial and Civil Engineering]. 2011, no. 7 (2), pp. 27—29. (In Russian)
  5. Baykov V.N., Bedov A.I., Frolov A.K. Effekt krutyashchikh momentov i rasporov v zhelezobetonnykh plitakh, opertykh po konturu [The Effect of Torques and Outward Thrusts in Reinforced Concrete Floor Slabs Supported on the Contour]. Stroitel’naya mekhanika i raschet sooruzheniy [Structural Mechanics and Analysis of Constructions]. 1992, no. 3, pp. 41—48. (In Russian)
  6. Vakhnenko P.F., editor. Raschet i konstruirovanie chastey zhilykh i obshchestvennykh zdaniy. Spravochnik proektirovshchika [The Design and Calculation of the Parts of Residential and Public Buildings. Designer’s Reference Book]. Kiev, Budіvel’nik Publ., 1987, 424 p. (In Russian)
  7. Dykhovichnyy Yu.A., editor. Zhilye i obshchestvennye zdaniya. Kratkiy spravochnik inzhenera-konstruktora [Residential and Public Buildings. Brief Reference Book for Design Engineers]. 3rd edition, revised and enlarged. Moscow, Stroyizdat Publ., 1991, 655 p. (In Russian)
  8. Golovin N.G., Plotnikov A.I. Raschet perekrestno-rebristykh perekrytiy metodom predel’nogo ravnovesiya s uchetom pereraspredeleniya usiliy [Calculation of Cross-Ribbed Floor Slabs by the Method of Limit Equilibrium Taking into Account the Redistribution of Efforts]. Arkhitektura. Stroitel’stvo. Obrazovanie: materialy regional’noy konferentsii, posvyashchennoy 35-letiyu obrazovaniya stroitel’nogo fakul’teta [Architecture. Construction. Education: Proceedings of the Regional Conference Dedicated to the 35th Anniversary of Construction Faculty Foundation]. Cheboksary, Chuvashskiy universitet Publ., 2013, pp. 6—17. (In Russian)
  9. Golovin N.G., Plotnikov A.I. Raschet perekrestno-rebristykh perekrytiy s uchetom fizicheskoy nelineynosti [Calculation of Cross-Ribbed Floor Slabs Considering Physical Nonlinearity]. Beton i zhelezobeton — vzglyad v budushchee : nauchnye trudy III Vserossiyskoy (II Mezhdunarodnoy) konferentsii po betonu i zhelezobetonu: v semi tomakh (g. Moskva, 12—16 maya 2014 g.) [Concrete and Reinforced Concrete — Glance into the Future. Scientific Works of the 3rd All-Russian (2nd International) Conference on Concrete and Reinforced Concrete in Seven Volumes (Moscow, May 12—16, 2014]. Moscow, MGSU Publ., 2014, vol. 1. Teoriya zhelezobetona. Zhelezobetonnye konstruktsii. Raschet i konstruirovanie [The Theory of Reinforced Concrete. Reinforced Concrete Constructions. Calculation and Design], pp. 234—244. (In Russian)
  10. Kumpyak O.G., Galyautdinov Z.R., Maksimov V.B. Issledovanie zhelezobetonnykh plit, opertykh po konturu na zhestkie i podatlivye opory, pri kratkovremennom dinamicheskom nagruzhenii [Investigation of Reinforced Concrete Floor Slabs Supported on the Contour by Rigid and Pliant Supports at Short Dynamic Loading]. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel’nogo universiteta [Bulletin of Tomsk State University of Architecture and Building]. 2013, no. 1 (38), pp. 69—76. (In Russian)
  11. Malakhova A.N. Monolitnye kessonnye perekrytiya zdaniy [Monolithic Waffle Slab Floors of Buildings]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2013, no. 1, pp. 79—86. (In Russian)
  12. Sagadaev R.A. Sovremennye metody vozvedeniya monolitnykh i sborno-monolitnykh perekrytiy [Modern Methods of Constructing Monolithic and Precast-Monolithic Floor Slabs]. Moscow, GOU DPO GASIS Publ., 2008, 35 p. (In Russian)
  13. Shmukler V.S. Effektivnaya sistema oblegchennykh zhelezobetonnykh elementov [An Effective System of Reducing the Weight of Reinforced Concrete Elements]. Beton i zhelezobeton — vzglyad v budushchee : nauchnye trudy III Vserossiyskoy (II Mezhdunarodnoy) konferentsii po betonu i zhelezobetonu: v semi tomakh (g. Moskva, 12—16 maya 2014 g.) [Concrete and Reinforced Concrete — Glance into the Future. Scientific Works of the 3rd All-Russian (2nd International) Conference on Concrete and Reinforced Concrete in Seven Volumes (Moscow, May 12—16, 2014]. Moscow, MGSU Publ., 2014, vol. 2: Bezopasnost’ zhelezobetonnykh konstruktsiy pri osobykh prirodnykh i tekhnogennykh vozdeystviyakh. Opyt stroitel’stva zdaniy i sooruzheniy. Monitoring sostoyaniya konstruktsiy zdaniy i sooruzheniy [Safety of Reinforced Concrete Structures under Special Natural and Man-Made Loads. Experience of the Construction of Buildings And Structures. Condition Monitoring of the Constructions of Buildings and Structures], pp. 346—356. (In Russian)
  14. Granovskiy A.V., Chupanov M.R. Eksperimental’nye issledovaniya nesushchey sposobnosti plit perekrytiy kessonnogo tipa [Experimental Investigations of Bearing Capacity of Caisson Type Floor Slabs]. Promyshlennoe i grazhdanskoe stroitel’stvo [Industrial and Civil Engineering]. 2015, no. 5, pp. 43—48. (In Russian)
  15. Schnellenbach-Held M., Pfeffer K. Tragverhalten zweiachsiger Hohlkörperdecken. Beton- und Stahlbetonbau. 2001, vol. 96, no. 9, pp. 573—578. DOI: http://dx.doi.org/10.1002/best.200100720.
  16. Hegger J., Roeser W. Gutachten zur Querkrafttragfähigkeit von Stahlbetondecken mit Cobiax-Hohlkörpern. Hegger+Partner, Aachen, 2008.
  17. Abramski M., Albert A., Pfeffer R., Schnel J. Experimentelle und numerische Untersuchungen zum Tragverhalten von Stahlbetondecken mit kugelförmigen Hohlkörpern. Beton- und Stahlbetonbau. 2010, vol. 105, no. 6, pp. 349—361. DOI: http://dx.doi.org/10.1002/best.201000031.
  18. Abramski M., Albert A., Pfeffer R., Schnel J. Stahlbetondecken mit kugelförmigen Hohlkörpern. Überprüfung der Scher- und Verwindungssteifigkeit. Betonwerk und fertigteil-technik, Bauverlag BV Gmbh. 2011, 106, Helf 2, pp. 182—184.
  19. Abramski M., Albert A., Pfeffer R., Schnel J. Bemessung und Konstruktion von zweiachsig gespannten Stahlbetondecken mit abgeflachten rotationssymmetrischen Hohlkörpern. Beton- und Stahlbetonbau. September 2012, vol. 107, no. 9, pp. 590—600. DOI: http://dx.doi.org/10.1002/best.201200027.
  20. Gorodetskiy A.S., Evzerov I.D. Komp’yuternye modeli konstruktsiy [The Computer Models of Structures]. Moscow, ASV Publ., 2009, 357 p. (In Russian)

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IMPROVEMENT OF STRUCTURAL-TECHNOLOGICAL SOLUTIONS AND METHODS OF ANALYSIS OF ROOFS OF UNDERGROUND STRUCTURES

Vestnik MGSU 3/2018 Volume 13
  • Korol’ Elena Anatol’evna - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Corresponding Member of the Russian Academy of Architecture and Construction Sciences, Head of the Department of Housing and Utility Complex, 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 .
  • Nikiforova Nadezhda Sergeevna - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Senior Researcher, Honorary Builder of the Russian Federation and Moscow, Professor, 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 330-338

In this article, methods of analysis of the improved designs of roofs of shallow underground structures are considered. Alternative methods to improve structural and technological solutions for covering underground structures arranged in an open manner are proposed. The developed design solutions are characterized by increased manufacturability due to reduction of labor costs owing to the use of low thermal conductivity concrete as a heat-insulating layer, which is monolithically connected during the manufacturing process with external layers of structural concrete because of the successive laying of these layers. To analyze the stress-strain state of roof’s structure and soil massif, a finite element method was used implemented in finite-element software packages. Subject: stress-strain state of structures of roofs of underground constructions built by an open method from different types of concrete with a monolithic bonding of layers. Research objectives: verification of finite element software packages used for analysis of the stress-strain state of soil massifs, as applied to multi-layer structures of roofs with a monolithic bonding of layers. Materials and methods: in our research, we used the methods of computer simulation of the stress-strain state of multi-layer bending structures of roofs from different types of concrete with a monolithic bonding of layers used in shallow underground structures. As for numerical software, the finite element software package ZSOIL was used. Results: in the article, we determine the rational areas of application of roof’s structures for shallow underground structures that are capable of sustaining vertical force loads and pressure from the ground massif. Structural and technological design solutions for roofs of underground structures, including the roofs of underground parking lots attached to the erected building, are characterized by low material consumption and increased manufacturability. Conclusions: for underground structures built in open excavation pits over which there are no aboveground floors, it is recommended to use multi-layer roof with a heat-insulating layer of concrete of low thermal conductivity as an alternative to traditional design solutions. Competitive structural and technological solutions of roofs and floors of shallow underground structures are obtained on the basis of computer simulation of stress-strain state using state-of-the-art finite element software.

DOI: 10.22227/1997-0935.2018.3.330-338

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FIELD TESTING OF DYNAMIC CHARACTERISTICS OF THE BUILDING OF A UNIVERSAL POOL UNDER CONSTRUCTION IN ANAPA

Vestnik MGSU 5/2012
  • Rumyantsev Anton Andreevich - Moscow State University of Civil Engineering (MSUCE) junior researcher, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sergeevtsev Evgeniy Yur'evich - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Moscow State University of Civil Engineering (MSUCE), Mytishchi Branch, 50 Olimpiyskiy prospect, Moscow Region, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 93 - 97

The authors describe the methodology and results of dynamic field testing of the building of a universal pool under construction, as well as its eigenfrequencies, identified through the employment of a computer model.
The subject of the research represents the building of a universal pool under construction in Anapa. The general goal of this research is to identify the seismic stability of the building structure. An unbalance-type vibration machine was used in the course of the testing procedure. The machine was designed and manufactured at Moscow State University of Civil Engineering.
Identification of natural vibrations of building structures and verification of the identity of the computer model and the natural behaviour of the structure were to be completed to assess the required modes of operation of the vibration machine. Identification of full-scale dynamic characteristics was performed through the employment of the impulse method of vibration excitation.
Comparative analysis of experimental vibration frequencies and eigenfrequencies identified in the course of calculations based on different mathematical models demonstrates their similarity in terms of local shapes of vibrations, namely, in terms of buckling vibrations of an "annular" beam employed for the purpose of measurements taken in the course of the testing procedure. Frequency values identified in the course of testing and calculations vary from 4.5 to 19.8 Hz.
Calibration of the vibration machine represents another objective of the experiment. The experiment has demonstrated that the whole operating range of frequencies (2 to 15Hz) is to be employed in the course of testing procedures described above.

DOI: 10.22227/1997-0935.2012.5.93 - 97

References
  1. Shablinskiy G.E., Isaykin A.S. Retrospektivnaya otsenka osobo otvetstvennykh sooruzheniy na osnove naturnykh dinamicheskikh issledovaniy [Retrospective Assessment of Structures of Major Importance on the basis of Dynamic Field Tests]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Construction], 1997, no. 8.
  2. Shablinskiy G.E., Zubkov D.A., Naturnye dinamicheskie issledovaniya stroitel'nykh konstruktsiy [Full-scale Dynamic Testing of Structures]. Moscow, ASV Publ., 2009.

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